diff --git a/.clang-tidy b/.clang-tidy
index f5079ed0e..f043d8cda 100644
--- a/.clang-tidy
+++ b/.clang-tidy
@@ -1,4 +1,4 @@
-Checks:          'clang-diagnostic-*,clang-analyzer-*,*,-modernize*,-hicpp*,-android-cloexec-fopen,-cert-dcl50-cpp,-cert-env33-c,-cert-err34-c,-cert-err58-cpp,-clang-analyzer-core.UndefinedBinaryOperatorResult,-clang-analyzer-security*,-cppcoreguidelines-no-malloc,-cppcoreguidelines-owning-memory,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-cppcoreguidelines-pro-bounds-constant-array-index,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-type-const-cast,-cppcoreguidelines-pro-type-reinterpret-cast,-cppcoreguidelines-pro-type-static-cast-downcast,-cppcoreguidelines-pro-type-union-access,-cppcoreguidelines-pro-type-vararg,-cppcoreguidelines-special-member-functions,-fuchsia-default-arguments,-fuchsia-overloaded-operator,-google-default-arguments,-google-readability-todo,-google-runtime-references,-llvm-header-guard,-llvm-include-order,-misc-string-integer-assignment,-misc-string-literal-with-embedded-nul,-readability-braces-around-statements,-readability-container-size-empty,-readability-delete-null-pointer,-readability-else-after-return,-readability-implicit-bool-conversion,-readability-named-parameter,-readability-static-accessed-through-instance'
+Checks:          '*,-hicpp*,-android-cloexec-fopen,-cert-dcl50-cpp,-cert-env33-c,-cert-err34-c,-cert-err58-cpp,-clang-analyzer-core.UndefinedBinaryOperatorResult,-clang-analyzer-security*,-cppcoreguidelines-avoid-magic-numbers,-cppcoreguidelines-no-malloc,-cppcoreguidelines-owning-memory,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-cppcoreguidelines-pro-bounds-array-to-pointer-decay,-cppcoreguidelines-pro-bounds-constant-array-index,-cppcoreguidelines-pro-bounds-pointer-arithmetic,-cppcoreguidelines-pro-type-const-cast,-cppcoreguidelines-pro-type-reinterpret-cast,-cppcoreguidelines-pro-type-static-cast-downcast,-cppcoreguidelines-pro-type-union-access,-cppcoreguidelines-pro-type-vararg,-cppcoreguidelines-special-member-functions,-fuchsia-*,-google-default-arguments,-google-readability-todo,-google-runtime-references,-llvm-header-guard,-llvm-include-order,-misc-string-integer-assignment,-misc-string-literal-with-embedded-nul,-modernize-use-auto,-modernize-use-trailing-return-type,-readability-braces-around-statements,-readability-container-size-empty,-readability-delete-null-pointer,-readability-else-after-return,-readability-implicit-bool-conversion,-readability-named-parameter,-readability-static-accessed-through-instance'
 WarningsAsErrors: ''
 HeaderFilterRegex: ''
 FormatStyle:     none
diff --git a/Makefile.in b/Makefile.in
index 6e2dc2ec7..7d2a929e2 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -445,12 +445,13 @@ CLANGTIDY = clang-tidy
 CLANGTIDY_FLAGS = -config='' -checks='-fuchsia-*,-cppcoreguidelines-avoid-c-arrays,-cppcoreguidelines-init-variables'
 CLANGTIDY_DEP = $(subst .h,.h.tidy,$(CPPCHECK_H)) \
 	$(subst .cpp,.cpp.tidy,$(CPPCHECK_CPP))
+CLANGTIDY_DEFS = -DVL_DEBUG=1 -DVL_THREADED=1 -DVL_CPPCHECK=1
 
 clang-tidy: $(CLANGTIDY_DEP)
 %.cpp.tidy: %.cpp
-	$(CLANGTIDY) $(CLANGTIDY_FLAGS) $< -- -DVL_DEBUG=1 -DVL_CPPCHECK=1 $(CPPCHECK_INC) | 2>&1 tee $@
+	$(CLANGTIDY) $(CLANGTIDY_FLAGS) $< -- $(CLANGTIDY_DEFS) $(CPPCHECK_INC) | 2>&1 tee $@
 %.h.tidy: %.h
-	$(CLANGTIDY) $(CLANGTIDY_FLAGS) $< -- -DVL_DEBUG=1 -DVL_CPPCHECK=1 $(CPPCHECK_INC) | 2>&1 tee $@
+	$(CLANGTIDY) $(CLANGTIDY_FLAGS) $< -- $(CLANGTIDY_DEFS) $(CPPCHECK_INC) | 2>&1 tee $@
 
 analyzer-src:
 	-rm -rf src/obj_dbg
diff --git a/include/verilated.cpp b/include/verilated.cpp
index d976d45a5..396b0cd5b 100644
--- a/include/verilated.cpp
+++ b/include/verilated.cpp
@@ -2202,9 +2202,6 @@ void VL_TIMEFORMAT_IINI(int units, int precision, const std::string& suffix,
 //===========================================================================
 // Verilated:: Methods
 
-Verilated::ThreadLocal::ThreadLocal() {}
-Verilated::ThreadLocal::~ThreadLocal() {}
-
 void Verilated::debug(int level) VL_MT_SAFE {
     const VerilatedLockGuard lock(m_mutex);
     s_s.s_debug = level;
@@ -2648,8 +2645,6 @@ void* VerilatedVarProps::datapAdjustIndex(void* datap, int dim, int indx) const
 //======================================================================
 // VerilatedScope:: Methods
 
-VerilatedScope::VerilatedScope() {}
-
 VerilatedScope::~VerilatedScope() {
     // Memory cleanup - not called during normal operation
     VerilatedImp::scopeErase(this);
diff --git a/include/verilated.h b/include/verilated.h
index 9d339d8db..c9a198e19 100644
--- a/include/verilated.h
+++ b/include/verilated.h
@@ -133,8 +133,8 @@ class VL_CAPABILITY("mutex") VerilatedMutex {
 private:
     std::mutex m_mutex;  // Mutex
 public:
-    VerilatedMutex() {}
-    ~VerilatedMutex() {}
+    VerilatedMutex() = default;
+    ~VerilatedMutex() = default;
     const VerilatedMutex& operator!() const { return *this; }  // For -fthread_safety
     /// Acquire/lock mutex
     void lock() VL_ACQUIRE() {
@@ -186,7 +186,7 @@ class VerilatedLockGuard {
 
 public:
     explicit VerilatedLockGuard(VerilatedMutex&) {}
-    ~VerilatedLockGuard() {}
+    ~VerilatedLockGuard() = default;
     void lock() {}
     void unlock() {}
 };
@@ -330,7 +330,7 @@ private:
     Type m_type = SCOPE_OTHER;  ///< Type of the scope
 
 public:  // But internals only - called from VerilatedModule's
-    VerilatedScope();
+    VerilatedScope() = default;
     ~VerilatedScope();
     void configure(VerilatedSyms* symsp, const char* prefixp, const char* suffixp,
                    const char* identifier, vlsint8_t timeunit, const Type& type) VL_MT_UNSAFE;
@@ -387,7 +387,7 @@ class Verilated {
         int s_randReset;  ///< Random reset: 0=all 0s, 1=all 1s, 2=random
         int s_randSeed;  ///< Random seed: 0=random
         Serialized();
-        ~Serialized() {}
+        ~Serialized() = default;
     } s_s;
 
     static struct NonSerialized {  // Non-serialized information
@@ -407,8 +407,8 @@ class Verilated {
         VerilatedMutex m_argMutex;  ///< Mutex for s_args members, when VL_THREADED
         int argc = 0;
         const char** argv = nullptr;
-        CommandArgValues() {}
-        ~CommandArgValues() {}
+        CommandArgValues() = default;
+        ~CommandArgValues() = default;
     } s_args;
 
     // Not covered by mutex, as per-thread
@@ -422,8 +422,8 @@ class Verilated {
         const char* t_dpiFilename = nullptr;  ///< DPI context filename
         int t_dpiLineno = 0;  ///< DPI context line number
 
-        ThreadLocal();
-        ~ThreadLocal();
+        ThreadLocal() = default;
+        ~ThreadLocal() = default;
     } t_s;
 
 private:
diff --git a/include/verilated_cov.cpp b/include/verilated_cov.cpp
index 753e550cb..5eee2997a 100644
--- a/include/verilated_cov.cpp
+++ b/include/verilated_cov.cpp
@@ -52,7 +52,7 @@ public:  // But only local to this file
             m_vals[i] = 0;
         }
     }
-    virtual ~VerilatedCovImpItem() {}
+    virtual ~VerilatedCovImpItem() = default;
     virtual vluint64_t count() const = 0;
     virtual void zero() const = 0;
 };
@@ -78,7 +78,7 @@ public:
         : m_countp{countp} {
         *m_countp = 0;
     }
-    virtual ~VerilatedCoverItemSpec() override {}
+    virtual ~VerilatedCoverItemSpec() override = default;
 };
 
 //=============================================================================
@@ -105,7 +105,7 @@ private:
     int m_insertLineno VL_GUARDED_BY(m_mutex) = 0;  ///< Line number about to insert
 
     // CONSTRUCTORS
-    VerilatedCovImp() {}
+    VerilatedCovImp() = default;
     VL_UNCOPYABLE(VerilatedCovImp);
 
 public:
diff --git a/include/verilated_heavy.h b/include/verilated_heavy.h
index 0c4d2eb83..5cf4530b0 100644
--- a/include/verilated_heavy.h
+++ b/include/verilated_heavy.h
@@ -108,10 +108,13 @@ private:
 
 public:
     // CONSTRUCTORS
-    VlQueue() {
-        // m_defaultValue isn't defaulted. Caller's constructor must do it.
-    }
-    ~VlQueue() {}
+    // m_defaultValue isn't defaulted. Caller's constructor must do it.
+    VlQueue() = default;
+    ~VlQueue() = default;
+    VlQueue(const VlQueue&) = default;
+    VlQueue(VlQueue&&) = default;
+    VlQueue& operator=(const VlQueue&) = default;
+    VlQueue& operator=(VlQueue&&) = default;
 
     // Standard copy constructor works. Verilog: assoca = assocb
     // Also must allow conversion from a different T_MaxSize queue
@@ -426,8 +429,13 @@ template <std::size_t T_Words> class VlWide {
 
 public:
     // cppcheck-suppress uninitVar
-    VlWide() {}
-    ~VlWide() {}
+    VlWide() = default;
+    ~VlWide() = default;
+    VlWide(const VlWide&) = default;
+    VlWide(VlWide&&) = default;
+    VlWide& operator=(const VlWide&) = default;
+    VlWide& operator=(VlWide&&) = default;
+    // METHODS
     const WData& at(size_t index) const { return m_storage[index]; }
     WData& at(size_t index) { return m_storage[index]; }
     WData* data() { return &m_storage[0]; }
@@ -467,11 +475,13 @@ private:
 
 public:
     // CONSTRUCTORS
-    VlAssocArray() {
-        // m_defaultValue isn't defaulted. Caller's constructor must do it.
-    }
-    ~VlAssocArray() {}
-    // Standard copy constructor works. Verilog: assoca = assocb
+    // m_defaultValue isn't defaulted. Caller's constructor must do it.
+    VlAssocArray() = default;
+    ~VlAssocArray() = default;
+    VlAssocArray(const VlAssocArray&) = default;
+    VlAssocArray(VlAssocArray&&) = default;
+    VlAssocArray& operator=(const VlAssocArray&) = default;
+    VlAssocArray& operator=(VlAssocArray&&) = default;
 
     // METHODS
     T_Value& atDefault() { return m_defaultValue; }
diff --git a/include/verilated_imp.h b/include/verilated_imp.h
index afbcc76b0..1b92f4798 100644
--- a/include/verilated_imp.h
+++ b/include/verilated_imp.h
@@ -64,7 +64,11 @@ public:
     VerilatedMsg(const std::function<void()>& cb)
         : m_mtaskId{Verilated::mtaskId()}
         , m_cb{cb} {}
-    ~VerilatedMsg() {}
+    ~VerilatedMsg() = default;
+    VerilatedMsg(const VerilatedMsg&) = default;
+    VerilatedMsg(VerilatedMsg&&) = default;
+    VerilatedMsg& operator=(const VerilatedMsg&) = default;
+    VerilatedMsg& operator=(VerilatedMsg&&) = default;
     // METHODS
     vluint32_t mtaskId() const { return m_mtaskId; }
     /// Execute the lambda function
@@ -87,7 +91,7 @@ public:
         : m_depth{0} {
         assert(atomic_is_lock_free(&m_depth));
     }
-    ~VerilatedEvalMsgQueue() {}
+    ~VerilatedEvalMsgQueue() = default;
 
 private:
     VL_UNCOPYABLE(VerilatedEvalMsgQueue);
@@ -207,8 +211,8 @@ protected:
         int m_timeFormatPrecision = 0;  // $timeformat number of decimal places
         int m_timeFormatWidth = 20;  // $timeformat character width
         enum { UNITS_NONE = 99 };  // Default based on precision
-        Serialized() {}
-        ~Serialized() {}
+        Serialized() = default;
+        ~Serialized() = default;
     } m_ser;
 
     VerilatedMutex m_sergMutex;  ///< Protect m_ser
@@ -275,8 +279,8 @@ protected:
 
 public:  // But only for verilated*.cpp
     // CONSTRUCTORS
-    VerilatedImp() {}
-    ~VerilatedImp() {}
+    VerilatedImp() = default;
+    ~VerilatedImp() = default;
     static void setup();
     static void teardown();
 
diff --git a/include/verilated_save.h b/include/verilated_save.h
index adc65fa8d..5729591d9 100644
--- a/include/verilated_save.h
+++ b/include/verilated_save.h
@@ -160,7 +160,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    VerilatedSave() {}
+    VerilatedSave() = default;
     virtual ~VerilatedSave() override { close(); }
     // METHODS
     /// Open the file; call isOpen() to see if errors
@@ -180,7 +180,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    VerilatedRestore() {}
+    VerilatedRestore() = default;
     virtual ~VerilatedRestore() override { close(); }
 
     // METHODS
diff --git a/include/verilated_sym_props.h b/include/verilated_sym_props.h
index 9d3b13732..9419e3309 100644
--- a/include/verilated_sym_props.h
+++ b/include/verilated_sym_props.h
@@ -43,7 +43,7 @@ class VerilatedRange {
 protected:
     friend class VerilatedVarProps;
     friend class VerilatedScope;
-    VerilatedRange() {}
+    VerilatedRange() = default;
     VerilatedRange(int left, int right)
         : m_left{left}
         , m_right{right} {}
@@ -53,7 +53,7 @@ protected:
     }
 
 public:
-    ~VerilatedRange() {}
+    ~VerilatedRange() = default;
     int left() const { return m_left; }
     int right() const { return m_right; }
     int low() const { return (m_left < m_right) ? m_left : m_right; }
@@ -136,7 +136,7 @@ public:
     }
 
 public:
-    ~VerilatedVarProps() {}
+    ~VerilatedVarProps() = default;
     // METHODS
     bool magicOk() const { return m_magic == MAGIC; }
     VerilatedVarType vltype() const { return m_vltype; }
@@ -199,7 +199,7 @@ public:
     VerilatedDpiOpenVar(const VerilatedVarProps* propsp, const void* datap)
         : m_propsp{propsp}
         , m_datap{const_cast<void*>(datap)} {}
-    ~VerilatedDpiOpenVar() {}
+    ~VerilatedDpiOpenVar() = default;
     // METHODS
     void* datap() const { return m_datap; }
     // METHODS - from VerilatedVarProps
@@ -241,7 +241,7 @@ protected:
         , m_isParam{isParam} {}
 
 public:
-    ~VerilatedVar() {}
+    ~VerilatedVar() = default;
     // ACCESSORS
     void* datap() const { return m_datap; }
     const VerilatedRange& range() const { return packed(); }  // Deprecated
diff --git a/include/verilated_syms.h b/include/verilated_syms.h
index e364a18cf..2a643b341 100644
--- a/include/verilated_syms.h
+++ b/include/verilated_syms.h
@@ -45,23 +45,23 @@ struct VerilatedCStrCmp {
 class VerilatedScopeNameMap
     : public std::map<const char*, const VerilatedScope*, VerilatedCStrCmp> {
 public:
-    VerilatedScopeNameMap() {}
-    ~VerilatedScopeNameMap() {}
+    VerilatedScopeNameMap() = default;
+    ~VerilatedScopeNameMap() = default;
 };
 
 /// Map of sorted variable names to find associated variable class
 class VerilatedVarNameMap : public std::map<const char*, VerilatedVar, VerilatedCStrCmp> {
 public:
-    VerilatedVarNameMap() {}
-    ~VerilatedVarNameMap() {}
+    VerilatedVarNameMap() = default;
+    ~VerilatedVarNameMap() = default;
 };
 
 typedef std::vector<const VerilatedScope*> VerilatedScopeVector;
 
 class VerilatedHierarchyMap : public std::map<const VerilatedScope*, VerilatedScopeVector> {
 public:
-    VerilatedHierarchyMap() {}
-    ~VerilatedHierarchyMap() {}
+    VerilatedHierarchyMap() = default;
+    ~VerilatedHierarchyMap() = default;
 };
 
 #endif  // Guard
diff --git a/include/verilated_threads.h b/include/verilated_threads.h
index 1ff8de64e..1592b2eaf 100644
--- a/include/verilated_threads.h
+++ b/include/verilated_threads.h
@@ -82,7 +82,7 @@ public:
     // that must notify this MTaskVertex before it will become ready
     // to run.
     explicit VlMTaskVertex(vluint32_t upstreamDepCount);
-    ~VlMTaskVertex() {}
+    ~VlMTaskVertex() = default;
 
     static vluint64_t yields() { return s_yields; }
     static void yieldThread() {
@@ -136,7 +136,7 @@ protected:
     unsigned m_cpu;  // Execution CPU number (at start anyways)
 public:
     class Barrier {};
-    VlProfileRec() {}
+    VlProfileRec() = default;
     explicit VlProfileRec(Barrier) { m_cpu = getcpu(); }
     void startRecord(vluint64_t time, uint32_t mtask, uint32_t predict) {
         m_type = VlProfileRec::TYPE_MTASK_RUN;
diff --git a/include/verilated_vcd_c.h b/include/verilated_vcd_c.h
index e5e1b334a..1bc9080a3 100644
--- a/include/verilated_vcd_c.h
+++ b/include/verilated_vcd_c.h
@@ -39,8 +39,8 @@ private:
     int m_fd = 0;  ///< File descriptor we're writing to
 public:
     // METHODS
-    VerilatedVcdFile() {}
-    virtual ~VerilatedVcdFile() {}
+    VerilatedVcdFile() = default;
+    virtual ~VerilatedVcdFile() = default;
     virtual bool open(const std::string& name) VL_MT_UNSAFE;
     virtual void close() VL_MT_UNSAFE;
     virtual ssize_t write(const char* bufp, ssize_t len) VL_MT_UNSAFE;
diff --git a/include/verilated_vpi.cpp b/include/verilated_vpi.cpp
index 58e17aa87..43e6feecd 100644
--- a/include/verilated_vpi.cpp
+++ b/include/verilated_vpi.cpp
@@ -61,8 +61,8 @@ class VerilatedVpio {
 
 public:
     // CONSTRUCTORS
-    VerilatedVpio() {}
-    virtual ~VerilatedVpio() {}
+    VerilatedVpio() = default;
+    virtual ~VerilatedVpio() = default;
     inline static void* operator new(size_t size) VL_MT_SAFE {
         // We new and delete tons of vpi structures, so keep them around
         // To simplify our free list, we use a size large enough for all derived types
@@ -114,7 +114,7 @@ public:
         m_value.format = cbDatap->value ? cbDatap->value->format : vpiSuppressVal;
         m_cbData.value = &m_value;
     }
-    virtual ~VerilatedVpioCb() override {}
+    virtual ~VerilatedVpioCb() override = default;
     static inline VerilatedVpioCb* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioCb*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -131,7 +131,7 @@ class VerilatedVpioConst : public VerilatedVpio {
 public:
     explicit VerilatedVpioConst(vlsint32_t num)
         : m_num{num} {}
-    virtual ~VerilatedVpioConst() override {}
+    virtual ~VerilatedVpioConst() override = default;
     static inline VerilatedVpioConst* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioConst*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -148,7 +148,7 @@ public:
         : m_varp{varp}
         , m_scopep{scopep} {}
 
-    virtual ~VerilatedVpioParam() override {}
+    virtual ~VerilatedVpioParam() override = default;
 
     static inline VerilatedVpioParam* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioParam*>(reinterpret_cast<VerilatedVpio*>(h));
@@ -172,7 +172,7 @@ class VerilatedVpioRange : public VerilatedVpio {
 public:
     explicit VerilatedVpioRange(const VerilatedRange* range)
         : m_range{range} {}
-    virtual ~VerilatedVpioRange() override {}
+    virtual ~VerilatedVpioRange() override = default;
     static inline VerilatedVpioRange* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioRange*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -198,7 +198,7 @@ protected:
 public:
     explicit VerilatedVpioScope(const VerilatedScope* scopep)
         : m_scopep{scopep} {}
-    virtual ~VerilatedVpioScope() override {}
+    virtual ~VerilatedVpioScope() override = default;
     static inline VerilatedVpioScope* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioScope*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -274,7 +274,7 @@ public:
         m_index = index;
         m_varDatap = (static_cast<vluint8_t*>(varp->datap())) + entSize() * offset;
     }
-    virtual ~VerilatedVpioMemoryWord() override {}
+    virtual ~VerilatedVpioMemoryWord() override = default;
     static inline VerilatedVpioMemoryWord* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioMemoryWord*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -298,7 +298,7 @@ class VerilatedVpioVarIter : public VerilatedVpio {
 public:
     explicit VerilatedVpioVarIter(const VerilatedScope* scopep)
         : m_scopep{scopep} {}
-    virtual ~VerilatedVpioVarIter() override {}
+    virtual ~VerilatedVpioVarIter() override = default;
     static inline VerilatedVpioVarIter* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioVarIter*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -334,7 +334,7 @@ public:
         , m_varp{varp}
         , m_iteration{varp->unpacked().right()}
         , m_direction{VL_LIKELY(varp->unpacked().left() > varp->unpacked().right()) ? 1 : -1} {}
-    virtual ~VerilatedVpioMemoryWordIter() override {}
+    virtual ~VerilatedVpioMemoryWordIter() override = default;
     static inline VerilatedVpioMemoryWordIter* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioMemoryWordIter*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -379,7 +379,7 @@ public:
         : m_vec{&vec} {
         m_it = m_vec->begin();
     }
-    virtual ~VerilatedVpioModuleIter() override {}
+    virtual ~VerilatedVpioModuleIter() override = default;
     static inline VerilatedVpioModuleIter* castp(vpiHandle h) {
         return dynamic_cast<VerilatedVpioModuleIter*>(reinterpret_cast<VerilatedVpio*>(h));
     }
@@ -422,8 +422,8 @@ class VerilatedVpiImp {
     static VerilatedVpiImp s_s;  // Singleton
 
 public:
-    VerilatedVpiImp() {}
-    ~VerilatedVpiImp() {}
+    VerilatedVpiImp() = default;
+    ~VerilatedVpiImp() = default;
     static void assertOneCheck() { s_s.m_assertOne.check(); }
     static void cbReasonAdd(VerilatedVpioCb* vop) {
         if (vop->reason() == cbValueChange) {
@@ -553,7 +553,7 @@ public:
         m_buff[0] = '\0';
         m_errorInfo.product = const_cast<PLI_BYTE8*>(Verilated::productName());
     }
-    ~VerilatedVpiError() {}
+    ~VerilatedVpiError() = default;
     static void selfTest() VL_MT_UNSAFE_ONE;
     VerilatedVpiError* setMessage(PLI_INT32 level) {
         m_flag = true;
diff --git a/src/V3Active.cpp b/src/V3Active.cpp
index 7b0124922..dae137c95 100644
--- a/src/V3Active.cpp
+++ b/src/V3Active.cpp
@@ -130,8 +130,8 @@ public:
     }
 
     // CONSTRUCTORS
-    ActiveNamer() {}
-    virtual ~ActiveNamer() override {}
+    ActiveNamer() = default;
+    virtual ~ActiveNamer() override = default;
     void main(AstScope* nodep) { iterate(nodep); }
 };
 
@@ -205,7 +205,7 @@ public:
         , m_alwaysp{nodep} {
         iterate(nodep);
     }
-    virtual ~ActiveDlyVisitor() override {}
+    virtual ~ActiveDlyVisitor() override = default;
 };
 
 //######################################################################
@@ -406,7 +406,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit ActiveVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~ActiveVisitor() override {}
+    virtual ~ActiveVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3ActiveTop.cpp b/src/V3ActiveTop.cpp
index b944618cf..72d2f0580 100644
--- a/src/V3ActiveTop.cpp
+++ b/src/V3ActiveTop.cpp
@@ -128,7 +128,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit ActiveTopVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~ActiveTopVisitor() override {}
+    virtual ~ActiveTopVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3AssertPre.cpp b/src/V3AssertPre.cpp
index 50a405b13..0c288ea8f 100644
--- a/src/V3AssertPre.cpp
+++ b/src/V3AssertPre.cpp
@@ -197,7 +197,7 @@ public:
         // Process
         iterate(nodep);
     }
-    virtual ~AssertPreVisitor() override {}
+    virtual ~AssertPreVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Ast.h b/src/V3Ast.h
index b32e504f7..d086a4def 100644
--- a/src/V3Ast.h
+++ b/src/V3Ast.h
@@ -1010,7 +1010,7 @@ public:
         : mu_flags{0} {
         init((right > left) ? right : left, (right > left) ? left : right, (right > left));
     }
-    ~VNumRange() {}
+    ~VNumRange() = default;
     // MEMBERS
     void init(int hi, int lo, bool littleEndian) {
         m_hi = hi;
@@ -1112,7 +1112,7 @@ public:
         , m_numeric{numeric}
         , m_keyword{kwd}
         , m_nrange{nrange} {}
-    ~VBasicTypeKey() {}
+    ~VBasicTypeKey() = default;
 };
 
 //######################################################################
@@ -1138,7 +1138,7 @@ public:
         m_u.ui = i;
     }
     explicit VNUser(void* p) { m_u.up = p; }
-    ~VNUser() {}
+    ~VNUser() = default;
     // Casters
     WidthVP* c() const { return reinterpret_cast<WidthVP*>(m_u.up); }
     VSymEnt* toSymEnt() const { return reinterpret_cast<VSymEnt*>(m_u.up); }
@@ -1315,7 +1315,7 @@ protected:
     AstNode** m_iterpp = nullptr;
 
 public:
-    AstNRelinker() {}
+    AstNRelinker() = default;
     void relink(AstNode* newp);
     AstNode* oldp() const { return m_oldp; }
     void dump(std::ostream& str = std::cout) const;
@@ -1538,7 +1538,7 @@ public:
     bool brokeExistsBelow() const;
 
     // CONSTRUCTORS
-    virtual ~AstNode() {}
+    virtual ~AstNode() = default;
 #ifdef VL_LEAK_CHECKS
     static void* operator new(size_t size);
     static void operator delete(void* obj, size_t size);
@@ -1905,7 +1905,7 @@ inline void AstNRelinker::relink(AstNode* newp) { newp->AstNode::relink(this); }
 //=== AstNode* : Derived generic node types
 
 #define ASTNODE_BASE_FUNCS(name) \
-    virtual ~Ast##name() {} \
+    virtual ~Ast##name() override = default; \
     static Ast##name* cloneTreeNull(Ast##name* nodep, bool cloneNextLink) { \
         return nodep ? nodep->cloneTree(cloneNextLink) : nullptr; \
     } \
diff --git a/src/V3AstNodes.h b/src/V3AstNodes.h
index 165f60dec..f68c68120 100644
--- a/src/V3AstNodes.h
+++ b/src/V3AstNodes.h
@@ -36,7 +36,7 @@
     Ast##name* clonep() const { return static_cast<Ast##name*>(AstNode::clonep()); }
 
 #define ASTNODE_NODE_FUNCS(name) \
-    virtual ~Ast##name() override {} \
+    virtual ~Ast##name() override = default; \
     ASTNODE_NODE_FUNCS_NO_DTOR(name)
 
 //######################################################################
diff --git a/src/V3Begin.cpp b/src/V3Begin.cpp
index cbe3871eb..31190eca8 100644
--- a/src/V3Begin.cpp
+++ b/src/V3Begin.cpp
@@ -45,8 +45,8 @@ private:
     bool m_anyFuncInBegin = false;
 
 public:
-    BeginState() {}
-    ~BeginState() {}
+    BeginState() = default;
+    ~BeginState() = default;
     void userMarkChanged(AstNode* nodep) {
         nodep->user1(true);
         m_anyFuncInBegin = true;
@@ -242,7 +242,7 @@ public:
         : m_statep{statep} {
         iterate(nodep);
     }
-    virtual ~BeginVisitor() override {}
+    virtual ~BeginVisitor() override = default;
 };
 
 //######################################################################
@@ -283,7 +283,7 @@ private:
 public:
     // CONSTRUCTORS
     BeginRelinkVisitor(AstNetlist* nodep, BeginState*) { iterate(nodep); }
-    virtual ~BeginRelinkVisitor() override {}
+    virtual ~BeginRelinkVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Branch.cpp b/src/V3Branch.cpp
index 2aa42a9b3..325ba2900 100644
--- a/src/V3Branch.cpp
+++ b/src/V3Branch.cpp
@@ -118,7 +118,7 @@ public:
         iterateChildren(nodep);
         calc_tasks();
     }
-    virtual ~BranchVisitor() override {}
+    virtual ~BranchVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Broken.cpp b/src/V3Broken.cpp
index de3a674b8..d76a9241c 100644
--- a/src/V3Broken.cpp
+++ b/src/V3Broken.cpp
@@ -190,8 +190,8 @@ public:
     }
 
     // CONSTRUCTORS
-    BrokenTable() {}
-    virtual ~BrokenTable() override {}
+    BrokenTable() = default;
+    virtual ~BrokenTable() override = default;
 };
 
 BrokenTable::NodeMap BrokenTable::s_nodes;
@@ -231,7 +231,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit BrokenMarkVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~BrokenMarkVisitor() override {}
+    virtual ~BrokenMarkVisitor() override = default;
 };
 
 //######################################################################
@@ -304,7 +304,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit BrokenCheckVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~BrokenCheckVisitor() override {}
+    virtual ~BrokenCheckVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3CCtors.cpp b/src/V3CCtors.cpp
index 94a0b1306..eb3a88d5d 100644
--- a/src/V3CCtors.cpp
+++ b/src/V3CCtors.cpp
@@ -87,7 +87,7 @@ public:
         m_funcp = m_tlFuncp;
         m_modp->addStmtp(m_tlFuncp);
     }
-    ~V3CCtorsVisitor() {}
+    ~V3CCtorsVisitor() = default;
 
 private:
     VL_UNCOPYABLE(V3CCtorsVisitor);
diff --git a/src/V3CUse.cpp b/src/V3CUse.cpp
index 698378314..86f97dd74 100644
--- a/src/V3CUse.cpp
+++ b/src/V3CUse.cpp
@@ -68,7 +68,7 @@ public:
     // CONSTRUCTORS
     explicit CUseState(AstNodeModule* nodep)
         : m_modInsertp{nodep} {}
-    virtual ~CUseState() {}
+    virtual ~CUseState() = default;
     VL_UNCOPYABLE(CUseState);
 };
 
@@ -109,7 +109,7 @@ public:
         : m_stater(stater) {  // Need () or GCC 4.8 false warning
         iterate(nodep);
     }
-    virtual ~CUseDTypeVisitor() override {}
+    virtual ~CUseDTypeVisitor() override = default;
     VL_UNCOPYABLE(CUseDTypeVisitor);
 };
 
@@ -219,7 +219,7 @@ public:
         : m_state{nodep} {
         iterate(nodep);
     }
-    virtual ~CUseVisitor() override {}
+    virtual ~CUseVisitor() override = default;
     VL_UNCOPYABLE(CUseVisitor);
 };
 
diff --git a/src/V3Case.cpp b/src/V3Case.cpp
index 99f9ba8c6..31c0bfeec 100644
--- a/src/V3Case.cpp
+++ b/src/V3Case.cpp
@@ -111,7 +111,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit CaseLintVisitor(AstNodeCase* nodep) { iterate(nodep); }
-    virtual ~CaseLintVisitor() override {}
+    virtual ~CaseLintVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Cast.cpp b/src/V3Cast.cpp
index faa0eedad..e2fe21ccb 100644
--- a/src/V3Cast.cpp
+++ b/src/V3Cast.cpp
@@ -193,7 +193,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit CastVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~CastVisitor() override {}
+    virtual ~CastVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Cdc.cpp b/src/V3Cdc.cpp
index 60e85be33..891420e47 100644
--- a/src/V3Cdc.cpp
+++ b/src/V3Cdc.cpp
@@ -66,7 +66,7 @@ public:
         , m_srcDomainSet{false}
         , m_dstDomainSet{false}
         , m_asyncPath{false} {}
-    virtual ~CdcEitherVertex() override {}
+    virtual ~CdcEitherVertex() override = default;
     // ACCESSORS
     virtual FileLine* fileline() const override { return nodep()->fileline(); }
     AstScope* scopep() const { return m_scopep; }
@@ -92,7 +92,7 @@ public:
     CdcVarVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : CdcEitherVertex{graphp, scopep, varScp}
         , m_varScp{varScp} {}
-    virtual ~CdcVarVertex() override {}
+    virtual ~CdcVarVertex() override = default;
     // ACCESSORS
     AstVarScope* varScp() const { return m_varScp; }
     virtual string name() const override { return (cvtToHex(m_varScp) + " " + varScp()->name()); }
@@ -117,7 +117,7 @@ public:
         srcDomainp(sensenodep);
         dstDomainp(sensenodep);
     }
-    virtual ~CdcLogicVertex() override {}
+    virtual ~CdcLogicVertex() override = default;
     // ACCESSORS
     virtual string name() const override {
         return (cvtToHex(nodep()) + "@" + scopep()->prettyName());
@@ -170,7 +170,7 @@ public:
         , m_prefix{prefix} {
         iterate(nodep);
     }
-    virtual ~CdcDumpVisitor() override {}
+    virtual ~CdcDumpVisitor() override = default;
 };
 
 //######################################################################
@@ -194,7 +194,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit CdcWidthVisitor(AstNode* nodep) { iterate(nodep); }
-    virtual ~CdcWidthVisitor() override {}
+    virtual ~CdcWidthVisitor() override = default;
     // ACCESSORS
     int maxWidth() const {
         size_t width = 1;
diff --git a/src/V3Changed.cpp b/src/V3Changed.cpp
index 922d0686c..6d80a0a7b 100644
--- a/src/V3Changed.cpp
+++ b/src/V3Changed.cpp
@@ -48,8 +48,8 @@ public:
     int m_numStmts = 0;  // Number of statements added to m_chgFuncp
     int m_funcNum = 0;  // Number of change functions emitted
 
-    ChangedState() {}
-    ~ChangedState() {}
+    ChangedState() = default;
+    ~ChangedState() = default;
 
     void maybeCreateChgFuncp() {
         // Don't create an extra function call if splitting is disabled
@@ -208,7 +208,7 @@ public:
         m_newLvEqnp->deleteTree();
         m_newRvEqnp->deleteTree();
     }
-    virtual ~ChangedInsertVisitor() override {}
+    virtual ~ChangedInsertVisitor() override = default;
     VL_UNCOPYABLE(ChangedInsertVisitor);
 };
 
@@ -280,7 +280,7 @@ public:
         : m_statep{statep} {
         iterate(nodep);
     }
-    virtual ~ChangedVisitor() override {}
+    virtual ~ChangedVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Clean.cpp b/src/V3Clean.cpp
index 3dcd7fc1e..e1ebe1fa0 100644
--- a/src/V3Clean.cpp
+++ b/src/V3Clean.cpp
@@ -305,7 +305,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit CleanVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~CleanVisitor() override {}
+    virtual ~CleanVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Clock.cpp b/src/V3Clock.cpp
index 1c39a0c9b..77a7d6ff7 100644
--- a/src/V3Clock.cpp
+++ b/src/V3Clock.cpp
@@ -454,7 +454,7 @@ public:
         // easily without iterating through the tree.
         nodep->evalp(m_evalFuncp);
     }
-    virtual ~ClockVisitor() override {}
+    virtual ~ClockVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Combine.cpp b/src/V3Combine.cpp
index ad2bcc690..70fcd589d 100644
--- a/src/V3Combine.cpp
+++ b/src/V3Combine.cpp
@@ -56,7 +56,7 @@ protected:
     // STATE
 
     // METHODS
-    virtual ~CombBaseVisitor() override {}
+    virtual ~CombBaseVisitor() override = default;
     VL_DEBUG_FUNC;  // Declare debug()
 };
 
@@ -131,8 +131,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    CombCallVisitor() {}
-    virtual ~CombCallVisitor() override {}
+    CombCallVisitor() = default;
+    virtual ~CombCallVisitor() override = default;
     void main(AstNetlist* nodep) { iterate(nodep); }
 };
 
@@ -153,7 +153,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit CombMarkVisitor(AstNode* nodep) { iterate(nodep); }
-    virtual ~CombMarkVisitor() override {}
+    virtual ~CombMarkVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Config.cpp b/src/V3Config.cpp
index 7a29b21fd..d58608116 100644
--- a/src/V3Config.cpp
+++ b/src/V3Config.cpp
@@ -38,8 +38,8 @@ template <typename T> class V3ConfigWildcardResolver {
     Map m_mapWildcard;  // Wildcard strings to entities
     Map m_mapResolved;  // Resolved strings to converged entities
 public:
-    V3ConfigWildcardResolver() {}
-    ~V3ConfigWildcardResolver() {}
+    V3ConfigWildcardResolver() = default;
+    ~V3ConfigWildcardResolver() = default;
 
     /// Update into maps from other
     void update(const V3ConfigWildcardResolver& other) {
@@ -123,7 +123,7 @@ class V3ConfigFTask {
     bool m_public = false;  // Public function/task
 
 public:
-    V3ConfigFTask() {}
+    V3ConfigFTask() = default;
     void update(const V3ConfigFTask& f) {
         // Don't overwrite true with false
         if (f.m_isolate) m_isolate = true;
@@ -165,7 +165,7 @@ class V3ConfigModule {
     bool m_inlineValue = false;  // The inline value (on/off)
 
 public:
-    V3ConfigModule() {}
+    V3ConfigModule() = default;
 
     void update(const V3ConfigModule& m) {
         m_tasks.update(m.m_tasks);
@@ -233,7 +233,7 @@ public:
         : m_lineno{lineno}
         , m_code{code}
         , m_on{on} {}
-    ~V3ConfigIgnoresLine() {}
+    ~V3ConfigIgnoresLine() = default;
     inline bool operator<(const V3ConfigIgnoresLine& rh) const {
         if (m_lineno < rh.m_lineno) return true;
         if (m_lineno > rh.m_lineno) return false;
@@ -352,8 +352,8 @@ class V3ConfigResolver {
     V3ConfigFileResolver m_files;  // Access to file names (with wildcards)
 
     static V3ConfigResolver s_singleton;  // Singleton (not via local static, as that's slow)
-    V3ConfigResolver() {}
-    ~V3ConfigResolver() {}
+    V3ConfigResolver() = default;
+    ~V3ConfigResolver() = default;
 
 public:
     inline static V3ConfigResolver& s() { return s_singleton; }
diff --git a/src/V3Const.cpp b/src/V3Const.cpp
index 8f71622b6..b2370d1ce 100644
--- a/src/V3Const.cpp
+++ b/src/V3Const.cpp
@@ -52,7 +52,7 @@ public:
         AstNode::user4ClearTree();  // Check marked InUse before we're called
         iterate(nodep);
     }
-    virtual ~ConstVarMarkVisitor() override {}
+    virtual ~ConstVarMarkVisitor() override = default;
 };
 
 class ConstVarFindVisitor : public AstNVisitor {
@@ -71,7 +71,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit ConstVarFindVisitor(AstNode* nodep) { iterateAndNextNull(nodep); }
-    virtual ~ConstVarFindVisitor() override {}
+    virtual ~ConstVarFindVisitor() override = default;
     // METHODS
     bool found() const { return m_found; }
 };
@@ -2563,7 +2563,7 @@ public:
         }
         // clang-format on
     }
-    virtual ~ConstVisitor() override {}
+    virtual ~ConstVisitor() override = default;
     AstNode* mainAcceptEdit(AstNode* nodep) {
         // Operate starting at a random place
         return iterateSubtreeReturnEdits(nodep);
diff --git a/src/V3Coverage.cpp b/src/V3Coverage.cpp
index a216b385c..4019953e8 100644
--- a/src/V3Coverage.cpp
+++ b/src/V3Coverage.cpp
@@ -52,7 +52,7 @@ private:
             : m_comment{comment}
             , m_varRefp{vp}
             , m_chgRefp{cp} {}
-        ~ToggleEnt() {}
+        ~ToggleEnt() = default;
         void cleanup() {
             VL_DO_CLEAR(m_varRefp->deleteTree(), m_varRefp = nullptr);
             VL_DO_CLEAR(m_chgRefp->deleteTree(), m_chgRefp = nullptr);
@@ -64,7 +64,7 @@ private:
         bool m_inModOff = false;  // In module with no coverage
         int m_handle = 0;  // Opaque handle for index into line tracking
         const AstNode* m_nodep = nullptr;  // Node establishing this state
-        CheckState() {}
+        CheckState() = default;
         bool lineCoverageOn(const AstNode* nodep) const {
             return m_on && !m_inModOff && nodep->fileline()->coverageOn()
                    && v3Global.opt.coverageLine();
@@ -534,7 +534,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit CoverageVisitor(AstNetlist* rootp) { iterateChildren(rootp); }
-    virtual ~CoverageVisitor() override {}
+    virtual ~CoverageVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Dead.cpp b/src/V3Dead.cpp
index 7b75e4bdb..718131703 100644
--- a/src/V3Dead.cpp
+++ b/src/V3Dead.cpp
@@ -63,7 +63,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit DeadModVisitor(AstNodeModule* nodep) { iterate(nodep); }
-    virtual ~DeadModVisitor() override {}
+    virtual ~DeadModVisitor() override = default;
 };
 
 //######################################################################
@@ -461,7 +461,7 @@ public:
         // We may have removed some datatypes, cleanup
         nodep->typeTablep()->repairCache();
     }
-    virtual ~DeadVisitor() override {}
+    virtual ~DeadVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Depth.cpp b/src/V3Depth.cpp
index fce9b9cf4..158bf4f85 100644
--- a/src/V3Depth.cpp
+++ b/src/V3Depth.cpp
@@ -155,7 +155,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit DepthVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~DepthVisitor() override {}
+    virtual ~DepthVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3DepthBlock.cpp b/src/V3DepthBlock.cpp
index b4346db8d..a95592ab8 100644
--- a/src/V3DepthBlock.cpp
+++ b/src/V3DepthBlock.cpp
@@ -117,7 +117,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit DepthBlockVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~DepthBlockVisitor() override {}
+    virtual ~DepthBlockVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Descope.cpp b/src/V3Descope.cpp
index dcaddcae5..fb864118d 100644
--- a/src/V3Descope.cpp
+++ b/src/V3Descope.cpp
@@ -296,7 +296,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit DescopeVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~DescopeVisitor() override {}
+    virtual ~DescopeVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3EmitC.cpp b/src/V3EmitC.cpp
index 79a11f158..4dabe5e7c 100644
--- a/src/V3EmitC.cpp
+++ b/src/V3EmitC.cpp
@@ -1258,7 +1258,7 @@ public:
         m_trackText = trackText;
         iterate(nodep);
     }
-    virtual ~EmitCStmts() override {}
+    virtual ~EmitCStmts() override = default;
 };
 
 //######################################################################
@@ -1276,7 +1276,7 @@ public:
         : m_mtaskIds(mtaskIds) {  // Cannot be {} or GCC 4.8 false warning
         m_serial = ++m_serialNext;  // Cannot be ()/{} or GCC 4.8 false warning
     }
-    virtual ~EmitVarTspSorter() {}
+    virtual ~EmitVarTspSorter() = default;
     // METHODS
     virtual bool operator<(const TspStateBase& other) const override {
         return operator<(dynamic_cast<const EmitVarTspSorter&>(other));
@@ -1840,8 +1840,8 @@ class EmitCImp : EmitCStmts {
     void maybeSplit(AstNodeModule* modp);
 
 public:
-    EmitCImp() {}
-    virtual ~EmitCImp() override {}
+    EmitCImp() = default;
+    virtual ~EmitCImp() override = default;
     void mainImp(AstNodeModule* modp, bool slow);
     void mainInt(AstNodeModule* modp);
     void mainDoFunc(AstCFunc* nodep) { iterate(nodep); }
@@ -3840,7 +3840,7 @@ class EmitCTrace : EmitCStmts {
 public:
     explicit EmitCTrace(bool slow)
         : m_slow{slow} {}
-    virtual ~EmitCTrace() override {}
+    virtual ~EmitCTrace() override = default;
     void main() {
         // Put out the file
         newOutCFile(0);
diff --git a/src/V3EmitCBase.h b/src/V3EmitCBase.h
index 75e4838ec..87bdb58bc 100644
--- a/src/V3EmitCBase.h
+++ b/src/V3EmitCBase.h
@@ -106,8 +106,8 @@ public:
     }
 
     // CONSTRUCTORS
-    EmitCBaseVisitor() {}
-    virtual ~EmitCBaseVisitor() override {}
+    EmitCBaseVisitor() = default;
+    virtual ~EmitCBaseVisitor() override = default;
 };
 
 //######################################################################
@@ -126,7 +126,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit EmitCBaseCounterVisitor(AstNode* nodep) { iterate(nodep); }
-    virtual ~EmitCBaseCounterVisitor() override {}
+    virtual ~EmitCBaseCounterVisitor() override = default;
     int count() const { return m_count; }
 };
 
diff --git a/src/V3EmitCMake.cpp b/src/V3EmitCMake.cpp
index 0b7e0f52e..ce830611e 100644
--- a/src/V3EmitCMake.cpp
+++ b/src/V3EmitCMake.cpp
@@ -256,7 +256,7 @@ class CMakeEmitter {
 
 public:
     explicit CMakeEmitter() { emitOverallCMake(); }
-    virtual ~CMakeEmitter() {}
+    virtual ~CMakeEmitter() = default;
 };
 
 void V3EmitCMake::emit() {
diff --git a/src/V3EmitCSyms.cpp b/src/V3EmitCSyms.cpp
index f0e63fa1d..eb88e4cdb 100644
--- a/src/V3EmitCSyms.cpp
+++ b/src/V3EmitCSyms.cpp
@@ -467,7 +467,7 @@ void EmitCSyms::emitSymHdr() {
 
     puts("\n// CREATORS\n");
     puts(symClassName() + "(" + topClassName() + "* topp, const char* namep);\n");
-    puts(string("~") + symClassName() + "() {}\n");
+    puts(string("~") + symClassName() + "() = default;\n");
 
     for (const auto& i : m_usesVfinal) {
         puts("void " + symClassName() + "_" + cvtToStr(i.first) + "(");
diff --git a/src/V3EmitMk.cpp b/src/V3EmitMk.cpp
index 0a55a2ef9..1c9f11cba 100644
--- a/src/V3EmitMk.cpp
+++ b/src/V3EmitMk.cpp
@@ -285,7 +285,7 @@ public:
         emitClassMake();
         emitOverallMake();
     }
-    virtual ~EmitMk() {}
+    virtual ~EmitMk() = default;
 };
 
 //######################################################################
diff --git a/src/V3EmitV.cpp b/src/V3EmitV.cpp
index aa53317dd..fb3974f7f 100644
--- a/src/V3EmitV.cpp
+++ b/src/V3EmitV.cpp
@@ -667,7 +667,7 @@ public:
     explicit EmitVBaseVisitor(bool suppressUnknown, AstSenTree* domainp)
         : m_suppressUnknown{suppressUnknown}
         , m_sensesp{domainp} {}
-    virtual ~EmitVBaseVisitor() override {}
+    virtual ~EmitVBaseVisitor() override = default;
 };
 
 //######################################################################
@@ -693,7 +693,7 @@ public:
         m_suppressVarSemi = suppressVarSemi;
         iterate(nodep);
     }
-    virtual ~EmitVFileVisitor() override {}
+    virtual ~EmitVFileVisitor() override = default;
 };
 
 //######################################################################
@@ -715,7 +715,7 @@ public:
         , m_os(os) {  // Need () or GCC 4.8 false warning
         iterate(nodep);
     }
-    virtual ~EmitVStreamVisitor() override {}
+    virtual ~EmitVStreamVisitor() override = default;
 };
 
 //######################################################################
@@ -792,7 +792,7 @@ public:
         if (user3mark) { AstUser3InUse::check(); }
         iterate(nodep);
     }
-    virtual ~EmitVPrefixedVisitor() override {}
+    virtual ~EmitVPrefixedVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3EmitXml.cpp b/src/V3EmitXml.cpp
index da2d26720..e607a8db8 100644
--- a/src/V3EmitXml.cpp
+++ b/src/V3EmitXml.cpp
@@ -250,7 +250,7 @@ public:
         : m_ofp{ofp} {
         iterate(nodep);
     }
-    virtual ~EmitXmlFileVisitor() override {}
+    virtual ~EmitXmlFileVisitor() override = default;
 };
 
 //######################################################################
@@ -298,7 +298,7 @@ public:
         }
         m_os << "</module_files>\n";
     }
-    virtual ~ModuleFilesXmlVisitor() override {}
+    virtual ~ModuleFilesXmlVisitor() override = default;
 };
 
 //######################################################################
@@ -363,7 +363,7 @@ public:
         // Operate on whole netlist
         nodep->accept(*this);
     }
-    virtual ~HierCellsXmlVisitor() override {}
+    virtual ~HierCellsXmlVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Expand.cpp b/src/V3Expand.cpp
index fb6bc7c43..3bb2d2451 100644
--- a/src/V3Expand.cpp
+++ b/src/V3Expand.cpp
@@ -879,7 +879,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit ExpandVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~ExpandVisitor() override {}
+    virtual ~ExpandVisitor() override = default;
 };
 
 //----------------------------------------------------------------------
diff --git a/src/V3File.cpp b/src/V3File.cpp
index f2cc0f6a9..59a2236c0 100644
--- a/src/V3File.cpp
+++ b/src/V3File.cpp
@@ -77,7 +77,7 @@ class V3FileDependImp {
             m_stat.st_ctime = 0;
             m_stat.st_mtime = 0;
         }
-        ~DependFile() {}
+        ~DependFile() = default;
         const string& filename() const { return m_filename; }
         bool target() const { return m_target; }
         bool exists() const { return m_exists; }
@@ -971,7 +971,7 @@ public:
         passthru("vlTOPp");
         passthru("vlSymsp");
     }
-    ~VIdProtectImp() {}
+    ~VIdProtectImp() = default;
     // METHODS
     string passthru(const string& old) {
         if (!v3Global.opt.protectIds()) return old;
diff --git a/src/V3File.h b/src/V3File.h
index 98145475e..5b841fe59 100644
--- a/src/V3File.h
+++ b/src/V3File.h
@@ -130,7 +130,7 @@ private:
 
 public:
     V3OutFormatter(const string& filename, Language lang);
-    virtual ~V3OutFormatter() {}
+    virtual ~V3OutFormatter() = default;
     // ACCESSORS
     string filename() const { return m_filename; }
     int column() const { return m_column; }
@@ -198,7 +198,7 @@ public:
         : V3OutFile{filename, V3OutFormatter::LA_C} {
         resetPrivate();
     }
-    virtual ~V3OutCFile() override {}
+    virtual ~V3OutCFile() override = default;
     virtual void putsHeader() { puts("// Verilated -*- C++ -*-\n"); }
     virtual void putsIntTopInclude() { putsForceIncs(); }
     virtual void putsGuard();
@@ -222,7 +222,7 @@ class V3OutScFile : public V3OutCFile {
 public:
     explicit V3OutScFile(const string& filename)
         : V3OutCFile{filename} {}
-    virtual ~V3OutScFile() override {}
+    virtual ~V3OutScFile() override = default;
     virtual void putsHeader() override { puts("// Verilated -*- SystemC -*-\n"); }
     virtual void putsIntTopInclude() override {
         putsForceIncs();
@@ -235,7 +235,7 @@ class V3OutVFile : public V3OutFile {
 public:
     explicit V3OutVFile(const string& filename)
         : V3OutFile{filename, V3OutFormatter::LA_VERILOG} {}
-    virtual ~V3OutVFile() override {}
+    virtual ~V3OutVFile() override = default;
     virtual void putsHeader() { puts("// Verilated -*- Verilog -*-\n"); }
 };
 
@@ -245,7 +245,7 @@ public:
         : V3OutFile{filename, V3OutFormatter::LA_XML} {
         blockIndent(2);
     }
-    virtual ~V3OutXmlFile() override {}
+    virtual ~V3OutXmlFile() override = default;
     virtual void putsHeader() { puts("<?xml version=\"1.0\" ?>\n"); }
 };
 
@@ -253,7 +253,7 @@ class V3OutMkFile : public V3OutFile {
 public:
     explicit V3OutMkFile(const string& filename)
         : V3OutFile{filename, V3OutFormatter::LA_MK} {}
-    virtual ~V3OutMkFile() override {}
+    virtual ~V3OutMkFile() override = default;
     virtual void putsHeader() { puts("# Verilated -*- Makefile -*-\n"); }
     // No automatic indentation yet.
     void puts(const char* strg) { putsNoTracking(strg); }
diff --git a/src/V3FileLine.h b/src/V3FileLine.h
index e6c1941ff..64adea8d4 100644
--- a/src/V3FileLine.h
+++ b/src/V3FileLine.h
@@ -45,8 +45,8 @@ class FileLineSingleton {
     std::deque<string> m_names;  // filename text for each filenameno
     std::deque<V3LangCode> m_languages;  // language for each filenameno
     // CONSTRUCTORS
-    FileLineSingleton() {}
-    ~FileLineSingleton() {}
+    FileLineSingleton() = default;
+    ~FileLineSingleton() = default;
 
 protected:
     friend class FileLine;
@@ -73,7 +73,7 @@ public:
         static int s_id = 0;
         m_id = ++s_id;
     }
-    ~VFileContent() {}
+    ~VFileContent() = default;
     // METHODS
     void pushText(const string& text);  // Add arbitrary text (need not be line-by-line)
     string getLine(int lineno) const;
@@ -143,7 +143,7 @@ public:
     explicit FileLine(EmptySecret);
     FileLine* copyOrSameFileLine();
     static void deleteAllRemaining();
-    ~FileLine() {}
+    ~FileLine() = default;
 #ifdef VL_LEAK_CHECKS
     static void* operator new(size_t size);
     static void operator delete(void* obj, size_t size);
diff --git a/src/V3Gate.cpp b/src/V3Gate.cpp
index 3d53fb356..b0b7d0a20 100644
--- a/src/V3Gate.cpp
+++ b/src/V3Gate.cpp
@@ -57,7 +57,7 @@ public:
     V3Graph* m_graphp;  // Graph this class is visiting
     explicit GateGraphBaseVisitor(V3Graph* graphp)
         : m_graphp{graphp} {}
-    virtual ~GateGraphBaseVisitor() {}
+    virtual ~GateGraphBaseVisitor() = default;
     virtual VNUser visit(GateLogicVertex* vertexp, VNUser vu = VNUser(0)) = 0;
     virtual VNUser visit(GateVarVertex* vertexp, VNUser vu = VNUser(0)) = 0;
     VL_DEBUG_FUNC;  // Declare debug()
@@ -75,7 +75,7 @@ public:
     GateEitherVertex(V3Graph* graphp, AstScope* scopep)
         : V3GraphVertex{graphp}
         , m_scopep{scopep} {}
-    virtual ~GateEitherVertex() override {}
+    virtual ~GateEitherVertex() override = default;
     // ACCESSORS
     virtual string dotStyle() const override { return m_consumed ? "" : "dotted"; }
     AstScope* scopep() const { return m_scopep; }
@@ -133,7 +133,7 @@ public:
     GateVarVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : GateEitherVertex{graphp, scopep}
         , m_varScp{varScp} {}
-    virtual ~GateVarVertex() override {}
+    virtual ~GateVarVertex() override = default;
     // ACCESSORS
     AstVarScope* varScp() const { return m_varScp; }
     virtual string name() const override { return (cvtToHex(m_varScp) + " " + varScp()->name()); }
@@ -174,7 +174,7 @@ public:
         , m_nodep{nodep}
         , m_activep{activep}
         , m_slow{slow} {}
-    virtual ~GateLogicVertex() override {}
+    virtual ~GateLogicVertex() override = default;
     // ACCESSORS
     virtual string name() const override {
         return (cvtToHex(m_nodep) + "@" + scopep()->prettyName());
@@ -291,7 +291,7 @@ public:
         }
         if (debug() >= 9 && !m_isSimple) nodep->dumpTree(cout, "    gate!Ok: ");
     }
-    virtual ~GateOkVisitor() override {}
+    virtual ~GateOkVisitor() override = default;
     // PUBLIC METHODS
     bool isSimple() const { return m_isSimple; }
     AstNode* substTree() const { return m_substTreep; }
@@ -870,7 +870,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    virtual ~GateElimVisitor() override {}
+    virtual ~GateElimVisitor() override = default;
     GateElimVisitor(AstNode* nodep, AstVarScope* varscp, AstNode* replaceTreep,
                     GateDedupeVarVisitor* varVisp) {
         UINFO(9, "     elimvisitor " << nodep << endl);
@@ -939,7 +939,7 @@ private:
     }
 
 public:
-    GateDedupeHash() {}
+    GateDedupeHash() = default;
     virtual ~GateDedupeHash() override {
         if (v3Global.opt.debugCheck()) check();
     }
@@ -1086,8 +1086,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    GateDedupeVarVisitor() {}
-    virtual ~GateDedupeVarVisitor() override {}
+    GateDedupeVarVisitor() = default;
+    virtual ~GateDedupeVarVisitor() override = default;
     // PUBLIC METHODS
     AstNodeVarRef* findDupe(AstNode* nodep, AstVarScope* consumerVarScopep, AstActive* activep) {
         m_assignp = nullptr;
@@ -1409,8 +1409,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    GateConcatVisitor() {}
-    virtual ~GateConcatVisitor() override {}
+    GateConcatVisitor() = default;
+    virtual ~GateConcatVisitor() override = default;
     // PUBLIC METHODS
     bool concatOffset(AstConcat* concatp, AstVarScope* vscp, int& offsetr) {
         m_vscp = vscp;
@@ -1436,7 +1436,7 @@ public:
     GateClkDecompState(int offset, AstVarScope* vsp)
         : m_offset{offset}
         , m_last_vsp{vsp} {}
-    virtual ~GateClkDecompState() {}
+    virtual ~GateClkDecompState() = default;
 };
 
 class GateClkDecompGraphVisitor : public GateGraphBaseVisitor {
@@ -1591,7 +1591,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit GateDeassignVisitor(AstNode* nodep) { iterate(nodep); }
-    virtual ~GateDeassignVisitor() override {}
+    virtual ~GateDeassignVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3GenClk.cpp b/src/V3GenClk.cpp
index 0aa972080..60ebff081 100644
--- a/src/V3GenClk.cpp
+++ b/src/V3GenClk.cpp
@@ -121,7 +121,7 @@ public:
         : m_topModp{topModp} {
         iterate(nodep);
     }
-    virtual ~GenClkRenameVisitor() override {}
+    virtual ~GenClkRenameVisitor() override = default;
 };
 
 //######################################################################
@@ -214,7 +214,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit GenClkReadVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~GenClkReadVisitor() override {}
+    virtual ~GenClkReadVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Graph.h b/src/V3Graph.h
index c8d0b2431..d4dbab874 100644
--- a/src/V3Graph.h
+++ b/src/V3Graph.h
@@ -218,7 +218,7 @@ public:
     virtual V3GraphVertex* clone(V3Graph* graphp) const {
         return new V3GraphVertex(graphp, *this);
     }
-    virtual ~V3GraphVertex() {}
+    virtual ~V3GraphVertex() = default;
     void unlinkEdges(V3Graph* graphp);
     void unlinkDelete(V3Graph* graphp);
 
@@ -317,7 +317,7 @@ public:
     virtual V3GraphEdge* clone(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top) const {
         return new V3GraphEdge(graphp, fromp, top, *this);
     }
-    virtual ~V3GraphEdge() {}
+    virtual ~V3GraphEdge() = default;
     // METHODS
     virtual string name() const { return m_fromp->name() + "->" + m_top->name(); }
     virtual string dotLabel() const { return ""; }
diff --git a/src/V3GraphAcyc.cpp b/src/V3GraphAcyc.cpp
index 57fc442e6..4eff24c30 100644
--- a/src/V3GraphAcyc.cpp
+++ b/src/V3GraphAcyc.cpp
@@ -42,7 +42,7 @@ public:
     GraphAcycVertex(V3Graph* graphp, V3GraphVertex* origVertexp)
         : V3GraphVertex{graphp}
         , m_origVertexp{origVertexp} {}
-    virtual ~GraphAcycVertex() override {}
+    virtual ~GraphAcycVertex() override = default;
     V3GraphVertex* origVertexp() const { return m_origVertexp; }
     void setDelete() { m_deleted = true; }
     bool isDelete() const { return m_deleted; }
@@ -67,7 +67,7 @@ public:
     GraphAcycEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top, int weight,
                   bool cutable = false)
         : V3GraphEdge{graphp, fromp, top, weight, cutable} {}
-    virtual ~GraphAcycEdge() override {}
+    virtual ~GraphAcycEdge() override = default;
     // yellow=we might still cut it, else oldEdge: yellowGreen=made uncutable, red=uncutable
     virtual string dotColor() const override {
         return (cutable() ? "yellow" : origEdgep()->dotColor());
diff --git a/src/V3GraphAlg.cpp b/src/V3GraphAlg.cpp
index 504c719cf..218d050a3 100644
--- a/src/V3GraphAlg.cpp
+++ b/src/V3GraphAlg.cpp
@@ -123,7 +123,7 @@ public:
         , m_sumWeights{sumWeights} {
         main();
     }
-    ~GraphRemoveRedundant() {}
+    ~GraphRemoveRedundant() = default;
 };
 
 void V3Graph::removeRedundantEdges(V3EdgeFuncP edgeFuncp) {
@@ -200,7 +200,7 @@ public:
         : GraphAlg<>(graphp, edgeFuncp) {
         main();
     }
-    ~GraphAlgWeakly() {}
+    ~GraphAlgWeakly() = default;
 };
 
 void V3Graph::weaklyConnected(V3EdgeFuncP edgeFuncp) { GraphAlgWeakly(this, edgeFuncp); }
@@ -288,7 +288,7 @@ public:
         m_currentDfs = 0;
         main();
     }
-    ~GraphAlgStrongly() {}
+    ~GraphAlgStrongly() = default;
 };
 
 void V3Graph::stronglyConnected(V3EdgeFuncP edgeFuncp) { GraphAlgStrongly(this, edgeFuncp); }
@@ -339,7 +339,7 @@ public:
         : GraphAlg<>{graphp, edgeFuncp} {
         main();
     }
-    ~GraphAlgRank() {}
+    ~GraphAlgRank() = default;
 };
 
 void V3Graph::rank() { GraphAlgRank(this, &V3GraphEdge::followAlwaysTrue); }
@@ -393,7 +393,7 @@ public:
         m_done = false;
         main(vertexp);
     }
-    ~GraphAlgRLoops() {}
+    ~GraphAlgRLoops() = default;
 };
 
 void V3Graph::reportLoops(V3EdgeFuncP edgeFuncp, V3GraphVertex* vertexp) {
@@ -441,7 +441,7 @@ public:
         m_graphp->userClearEdges();
         (void)vertexIterateAll(vertexp);
     }
-    ~GraphAlgSubtrees() {}
+    ~GraphAlgSubtrees() = default;
 };
 
 //! Report the entire connected graph with a loop or loops
diff --git a/src/V3GraphAlg.h b/src/V3GraphAlg.h
index 3d7abaea5..408e99c46 100644
--- a/src/V3GraphAlg.h
+++ b/src/V3GraphAlg.h
@@ -36,7 +36,7 @@ protected:
     GraphAlg(T_Graph* graphp, V3EdgeFuncP edgeFuncp)
         : m_graphp{graphp}
         , m_edgeFuncp{edgeFuncp} {}
-    ~GraphAlg() {}
+    ~GraphAlg() = default;
     // METHODS
     inline bool followEdge(V3GraphEdge* edgep) {
         return (edgep->weight() && (m_edgeFuncp)(edgep));
diff --git a/src/V3GraphDfa.cpp b/src/V3GraphDfa.cpp
index 2c8f0bb48..c114f8632 100644
--- a/src/V3GraphDfa.cpp
+++ b/src/V3GraphDfa.cpp
@@ -368,7 +368,7 @@ public:
         m_step = 0;
         main();
     }
-    ~GraphNfaToDfa() {}
+    ~GraphNfaToDfa() = default;
 };
 
 void DfaGraph::nfaToDfa() { GraphNfaToDfa(this, &V3GraphEdge::followAlwaysTrue); }
@@ -502,7 +502,7 @@ public:
         optimize_no_outbound();
         if (debug() >= 6) m_graphp->dumpDotFilePrefixed("opt_noout");
     }
-    ~DfaGraphReduce() {}
+    ~DfaGraphReduce() = default;
 };
 
 void DfaGraph::dfaReduce() { DfaGraphReduce(this, &V3GraphEdge::followAlwaysTrue); }
@@ -598,7 +598,7 @@ public:
         VL_DO_CLEAR(m_tempNewerReject->unlinkDelete(graphp()), m_tempNewerReject = nullptr);
         if (debug() >= 6) m_graphp->dumpDotFilePrefixed("comp_out");
     }
-    ~DfaGraphComplement() {}
+    ~DfaGraphComplement() = default;
     VL_UNCOPYABLE(DfaGraphComplement);
 };
 
diff --git a/src/V3GraphDfa.h b/src/V3GraphDfa.h
index a2ec64bd8..027724506 100644
--- a/src/V3GraphDfa.h
+++ b/src/V3GraphDfa.h
@@ -61,8 +61,8 @@ class DfaEdge;
 class DfaGraph : public V3Graph {
 public:
     // CONSTRUCTORS
-    DfaGraph() {}
-    virtual ~DfaGraph() override {}
+    DfaGraph() = default;
+    virtual ~DfaGraph() override = default;
     // METHODS
     /// Find start node
     DfaVertex* findStart();
@@ -93,7 +93,7 @@ public:
     virtual DfaVertex* clone(DfaGraph* graphp) {
         return new DfaVertex(graphp, start(), accepting());
     }
-    virtual ~DfaVertex() override {}
+    virtual ~DfaVertex() override = default;
     // ACCESSORS
     virtual string dotShape() const override { return (accepting() ? "doublecircle" : ""); }
     virtual string dotColor() const override {
@@ -128,7 +128,7 @@ public:
         : V3GraphEdge{graphp, fromp, top, copyfrom->weight()}
         , m_input{copyfrom->input()}
         , m_complement{copyfrom->complement()} {}
-    virtual ~DfaEdge() override {}
+    virtual ~DfaEdge() override = default;
     // METHODS
     virtual string dotColor() const override {
         return (na() ? "yellow" : epsilon() ? "green" : "black");
diff --git a/src/V3GraphPathChecker.cpp b/src/V3GraphPathChecker.cpp
index 05d14a167..8867d2cfa 100644
--- a/src/V3GraphPathChecker.cpp
+++ b/src/V3GraphPathChecker.cpp
@@ -44,7 +44,7 @@ struct GraphPCNode {
     GraphPCNode() {
         for (unsigned int& w : m_cp) w = 0;
     }
-    ~GraphPCNode() {}
+    ~GraphPCNode() = default;
 };
 
 //######################################################################
diff --git a/src/V3GraphStream.h b/src/V3GraphStream.h
index 233184397..d8a44a472 100644
--- a/src/V3GraphStream.h
+++ b/src/V3GraphStream.h
@@ -132,7 +132,7 @@ public:
             }
         }
     }
-    ~GraphStream() {}
+    ~GraphStream() = default;
 
     // METHODS
 
diff --git a/src/V3GraphTest.cpp b/src/V3GraphTest.cpp
index ac2f66f48..ba12e0284 100644
--- a/src/V3GraphTest.cpp
+++ b/src/V3GraphTest.cpp
@@ -40,8 +40,8 @@ protected:
     }
 
 public:
-    V3GraphTest() {}
-    virtual ~V3GraphTest() {}
+    V3GraphTest() = default;
+    virtual ~V3GraphTest() = default;
     VL_DEBUG_FUNC;  // Declare debug()
     void run() { runTest(); }
 };
@@ -57,7 +57,7 @@ public:
     V3GraphTestVertex(V3Graph* graphp, const string& name)
         : V3GraphVertex{graphp}
         , m_name{name} {}
-    virtual ~V3GraphTestVertex() override {}
+    virtual ~V3GraphTestVertex() override = default;
     // ACCESSORS
     virtual string name() const override { return m_name; }
 };
@@ -66,7 +66,7 @@ class V3GraphTestVarVertex : public V3GraphTestVertex {
 public:
     V3GraphTestVarVertex(V3Graph* graphp, const string& name)
         : V3GraphTestVertex{graphp, name} {}
-    virtual ~V3GraphTestVarVertex() override {}
+    virtual ~V3GraphTestVarVertex() override = default;
     // ACCESSORS
     virtual string dotColor() const override { return "blue"; }
 };
@@ -267,7 +267,7 @@ public:
     DfaTestVertex(DfaGraph* graphp, const string& name)
         : DfaVertex{graphp}
         , m_name{name} {}
-    virtual ~DfaTestVertex() override {}
+    virtual ~DfaTestVertex() override = default;
     // ACCESSORS
     virtual string name() const override { return m_name; }
 };
diff --git a/src/V3Hashed.cpp b/src/V3Hashed.cpp
index 14579bc87..e830f0ab7 100644
--- a/src/V3Hashed.cpp
+++ b/src/V3Hashed.cpp
@@ -102,7 +102,7 @@ public:
         nodeHashIterate(const_cast<AstNode*>(nodep));
     }
     V3Hash finalHash() const { return m_lowerHash; }
-    virtual ~HashedVisitor() override {}
+    virtual ~HashedVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Hashed.h b/src/V3Hashed.h
index 0fc0ace5a..0f8afbac1 100644
--- a/src/V3Hashed.h
+++ b/src/V3Hashed.h
@@ -27,8 +27,8 @@
 class VHashedBase {
 public:
     // CONSTRUCTORS
-    VHashedBase() {}
-    ~VHashedBase() {}
+    VHashedBase() = default;
+    ~VHashedBase() = default;
 
     // METHODS
     VL_DEBUG_FUNC;  // Declare debug()
@@ -39,8 +39,8 @@ public:
 struct V3HashedUserSame {
     // Functor for V3Hashed::findDuplicate
     virtual bool isSame(AstNode*, AstNode*) = 0;
-    V3HashedUserSame() {}
-    virtual ~V3HashedUserSame() {}
+    V3HashedUserSame() = default;
+    virtual ~V3HashedUserSame() = default;
 };
 
 class V3Hashed : public VHashedBase {
@@ -60,7 +60,7 @@ private:
 public:
     // CONSTRUCTORS
     V3Hashed() { clear(); }
-    ~V3Hashed() {}
+    ~V3Hashed() = default;
 
     // ACCESSORS
     HashMmap& mmap() { return m_hashMmap; }  // Return map for iteration
diff --git a/src/V3HierBlock.cpp b/src/V3HierBlock.cpp
index f605723fc..198877007 100644
--- a/src/V3HierBlock.cpp
+++ b/src/V3HierBlock.cpp
@@ -304,8 +304,6 @@ public:
 
 //######################################################################
 
-V3HierBlockPlan::V3HierBlockPlan() {}
-
 bool V3HierBlockPlan::isHierBlock(const AstNodeModule* modp) const {
     return m_blocks.find(modp) != m_blocks.end();
 }
diff --git a/src/V3HierBlock.h b/src/V3HierBlock.h
index d5898dc34..81e0603ae 100644
--- a/src/V3HierBlock.h
+++ b/src/V3HierBlock.h
@@ -99,7 +99,7 @@ class V3HierBlockPlan {
     typedef std::map<const AstNodeModule*, V3HierBlock*> HierMap;
     HierMap m_blocks;
 
-    V3HierBlockPlan();
+    V3HierBlockPlan() = default;
     VL_UNCOPYABLE(V3HierBlockPlan);
 
 public:
diff --git a/src/V3Inline.cpp b/src/V3Inline.cpp
index 01ef648fd..f66f2a0f8 100644
--- a/src/V3Inline.cpp
+++ b/src/V3Inline.cpp
@@ -254,7 +254,7 @@ public:
     explicit InlineCollectVisitor(AstNodeModule* nodep) {  // passed OLD module, not new one
         iterate(nodep);
     }
-    virtual ~InlineCollectVisitor() override {}
+    virtual ~InlineCollectVisitor() override = default;
 };
 
 //######################################################################
@@ -474,7 +474,7 @@ public:
         , m_cellp{cellp} {
         iterate(cloneModp);
     }
-    virtual ~InlineRelinkVisitor() override {}
+    virtual ~InlineRelinkVisitor() override = default;
 };
 
 //######################################################################
@@ -702,7 +702,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit InlineIntfRefVisitor(AstNode* nodep) { iterate(nodep); }
-    virtual ~InlineIntfRefVisitor() override {}
+    virtual ~InlineIntfRefVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Inst.cpp b/src/V3Inst.cpp
index adc210e24..022388977 100644
--- a/src/V3Inst.cpp
+++ b/src/V3Inst.cpp
@@ -132,7 +132,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit InstVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~InstVisitor() override {}
+    virtual ~InstVisitor() override = default;
 };
 
 //######################################################################
@@ -178,13 +178,13 @@ public:
     }
 
     // CONSTRUCTORS
-    explicit InstDeModVarVisitor() {}
+    InstDeModVarVisitor() = default;
+    virtual ~InstDeModVarVisitor() override = default;
     void main(AstNodeModule* nodep) {
         UINFO(8, "  dmMODULE    " << nodep << endl);
         m_modVarNameMap.clear();
         iterate(nodep);
     }
-    virtual ~InstDeModVarVisitor() override {}
 };
 
 //######################################################################
@@ -466,7 +466,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit InstDeVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~InstDeVisitor() override {}
+    virtual ~InstDeVisitor() override = default;
 };
 
 //######################################################################
@@ -475,7 +475,7 @@ public:
 class InstStatic {
 private:
     VL_DEBUG_FUNC;  // Declare debug()
-    InstStatic() {}  // Static class
+    InstStatic() = default;  // Static class
 
     static AstNode* extendOrSel(FileLine* fl, AstNode* rhsp, AstNode* cmpWidthp) {
         if (cmpWidthp->width() > rhsp->width()) {
diff --git a/src/V3InstrCount.cpp b/src/V3InstrCount.cpp
index 85ca8f3c9..5eb23fae9 100644
--- a/src/V3InstrCount.cpp
+++ b/src/V3InstrCount.cpp
@@ -74,7 +74,7 @@ public:
         , m_osp{osp} {
         if (nodep) iterate(nodep);
     }
-    virtual ~InstrCountVisitor() override {}
+    virtual ~InstrCountVisitor() override = default;
 
     // METHODS
     uint32_t instrCount() const { return m_instrCount; }
@@ -275,7 +275,7 @@ public:
         UASSERT_OBJ(osp, nodep, "Don't call if not dumping");
         if (nodep) iterate(nodep);
     }
-    virtual ~InstrCountDumpVisitor() override {}
+    virtual ~InstrCountDumpVisitor() override = default;
 
 private:
     // METHODS
diff --git a/src/V3Life.cpp b/src/V3Life.cpp
index a2ea3efd8..7663ca404 100644
--- a/src/V3Life.cpp
+++ b/src/V3Life.cpp
@@ -50,7 +50,7 @@ public:
     std::vector<AstNode*> m_unlinkps;
 
     // CONSTRUCTORS
-    LifeState() {}
+    LifeState() = default;
     ~LifeState() {
         V3Stats::addStatSum("Optimizations, Lifetime assign deletions", m_statAssnDel);
         V3Stats::addStatSum("Optimizations, Lifetime constant prop", m_statAssnCon);
@@ -92,7 +92,7 @@ public:
         : m_setBeforeUse{false} {
         consumed();
     }
-    ~LifeVarEntry() {}
+    ~LifeVarEntry() = default;
     inline void simpleAssign(AstNodeAssign* assp) {  // New simple A=.... assignment
         m_assignp = assp;
         m_constp = nullptr;
@@ -135,7 +135,7 @@ public:
         m_aboveLifep = aboveLifep;  // Null if top
         m_statep = statep;
     }
-    ~LifeBlock() {}
+    ~LifeBlock() = default;
     // METHODS
     void checkRemoveAssign(const LifeMap::iterator& it) {
         AstVar* varp = it->first->varp();
@@ -479,7 +479,7 @@ public:
         : m_statep{statep} {
         iterate(nodep);
     }
-    virtual ~LifeTopVisitor() override {}
+    virtual ~LifeTopVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LifePost.cpp b/src/V3LifePost.cpp
index 4e254a991..a633af7ce 100644
--- a/src/V3LifePost.cpp
+++ b/src/V3LifePost.cpp
@@ -91,7 +91,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LifePostElimVisitor(AstTopScope* nodep) { iterate(nodep); }
-    virtual ~LifePostElimVisitor() override {}
+    virtual ~LifePostElimVisitor() override = default;
 };
 
 //######################################################################
@@ -103,7 +103,7 @@ struct LifeLocation {
     uint32_t sequence = 0;
 
 public:
-    LifeLocation() {}
+    LifeLocation() = default;
     LifeLocation(const ExecMTask* mtaskp_, uint32_t sequence_)
         : mtaskp{mtaskp_}
         , sequence{sequence_} {}
@@ -119,7 +119,7 @@ public:
 struct LifePostLocation {
     LifeLocation loc;
     AstAssignPost* nodep = nullptr;
-    LifePostLocation() {}
+    LifePostLocation() = default;
     LifePostLocation(LifeLocation loc_, AstAssignPost* nodep_)
         : loc{loc_}
         , nodep{nodep_} {}
diff --git a/src/V3LinkCells.cpp b/src/V3LinkCells.cpp
index b97e1261b..73e688c3e 100644
--- a/src/V3LinkCells.cpp
+++ b/src/V3LinkCells.cpp
@@ -43,8 +43,8 @@
 
 class LinkCellsGraph : public V3Graph {
 public:
-    LinkCellsGraph() {}
-    virtual ~LinkCellsGraph() override {}
+    LinkCellsGraph() = default;
+    virtual ~LinkCellsGraph() override = default;
     virtual void loopsMessageCb(V3GraphVertex* vertexp) override;
 };
 
@@ -55,7 +55,7 @@ public:
     LinkCellsVertex(V3Graph* graphp, AstNodeModule* modp)
         : V3GraphVertex{graphp}
         , m_modp{modp} {}
-    virtual ~LinkCellsVertex() override {}
+    virtual ~LinkCellsVertex() override = default;
     AstNodeModule* modp() const { return m_modp; }
     virtual string name() const override { return modp()->name(); }
     virtual FileLine* fileline() const override { return modp()->fileline(); }
@@ -69,7 +69,7 @@ class LibraryVertex : public V3GraphVertex {
 public:
     explicit LibraryVertex(V3Graph* graphp)
         : V3GraphVertex{graphp} {}
-    virtual ~LibraryVertex() override {}
+    virtual ~LibraryVertex() override = default;
     virtual string name() const override { return "*LIBRARY*"; }
 };
 
@@ -517,7 +517,7 @@ public:
         }
         iterate(nodep);
     }
-    virtual ~LinkCellsVisitor() override {}
+    virtual ~LinkCellsVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LinkDot.cpp b/src/V3LinkDot.cpp
index 850ea63e2..5d07c5457 100644
--- a/src/V3LinkDot.cpp
+++ b/src/V3LinkDot.cpp
@@ -1314,7 +1314,7 @@ public:
 
         iterate(rootp);
     }
-    virtual ~LinkDotFindVisitor() override {}
+    virtual ~LinkDotFindVisitor() override = default;
 };
 
 //======================================================================
@@ -1479,7 +1479,7 @@ public:
         UINFO(4, __FUNCTION__ << ": " << endl);
         iterate(rootp);
     }
-    virtual ~LinkDotParamVisitor() override {}
+    virtual ~LinkDotParamVisitor() override = default;
 };
 
 //======================================================================
@@ -1637,7 +1637,7 @@ public:
         UINFO(4, __FUNCTION__ << ": " << endl);
         iterate(rootp);
     }
-    virtual ~LinkDotScopeVisitor() override {}
+    virtual ~LinkDotScopeVisitor() override = default;
 };
 
 //======================================================================
@@ -1722,7 +1722,7 @@ public:
         m_statep = statep;
         iterate(nodep);
     }
-    virtual ~LinkDotIfaceVisitor() override {}
+    virtual ~LinkDotIfaceVisitor() override = default;
 };
 
 void LinkDotState::computeIfaceModSyms() {
@@ -1777,7 +1777,7 @@ private:
         bool m_dotErr;  // Error found in dotted resolution, ignore upwards
         string m_dotText;  // String of dotted names found in below parseref
         DotStates() { init(nullptr); }
-        ~DotStates() {}
+        ~DotStates() = default;
         void init(VSymEnt* curSymp) {
             m_dotPos = DP_NONE;
             m_dotSymp = curSymp;
@@ -2919,7 +2919,7 @@ public:
         UINFO(4, __FUNCTION__ << ": " << endl);
         iterate(rootp);
     }
-    virtual ~LinkDotResolveVisitor() override {}
+    virtual ~LinkDotResolveVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LinkInc.cpp b/src/V3LinkInc.cpp
index c7cf6298a..db1f00fa1 100644
--- a/src/V3LinkInc.cpp
+++ b/src/V3LinkInc.cpp
@@ -238,7 +238,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LinkIncVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~LinkIncVisitor() override {}
+    virtual ~LinkIncVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LinkJump.cpp b/src/V3LinkJump.cpp
index 0bccce54a..a83387885 100644
--- a/src/V3LinkJump.cpp
+++ b/src/V3LinkJump.cpp
@@ -282,7 +282,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LinkJumpVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~LinkJumpVisitor() override {}
+    virtual ~LinkJumpVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LinkLValue.cpp b/src/V3LinkLValue.cpp
index d5a26d0f5..999950d8e 100644
--- a/src/V3LinkLValue.cpp
+++ b/src/V3LinkLValue.cpp
@@ -290,7 +290,7 @@ public:
         : m_setRefLvalue{start} {
         iterate(nodep);
     }
-    virtual ~LinkLValueVisitor() override {}
+    virtual ~LinkLValueVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LinkParse.cpp b/src/V3LinkParse.cpp
index 14cc8d494..19c065d24 100644
--- a/src/V3LinkParse.cpp
+++ b/src/V3LinkParse.cpp
@@ -606,7 +606,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LinkParseVisitor(AstNetlist* rootp) { iterate(rootp); }
-    virtual ~LinkParseVisitor() override {}
+    virtual ~LinkParseVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3LinkResolve.cpp b/src/V3LinkResolve.cpp
index 190c4c4a8..eccb7318a 100644
--- a/src/V3LinkResolve.cpp
+++ b/src/V3LinkResolve.cpp
@@ -517,7 +517,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LinkResolveVisitor(AstNetlist* rootp) { iterate(rootp); }
-    virtual ~LinkResolveVisitor() override {}
+    virtual ~LinkResolveVisitor() override = default;
 };
 
 //######################################################################
@@ -556,7 +556,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LinkBotupVisitor(AstNetlist* rootp) { iterate(rootp); }
-    virtual ~LinkBotupVisitor() override {}
+    virtual ~LinkBotupVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3List.h b/src/V3List.h
index 5022e6d38..0b4bc399b 100644
--- a/src/V3List.h
+++ b/src/V3List.h
@@ -36,8 +36,8 @@ private:
     friend class V3ListEnt<T>;
 
 public:
-    V3List() {}
-    ~V3List() {}
+    V3List() = default;
+    ~V3List() = default;
     // METHODS
     T begin() const { return m_headp; }
     T end() const { return nullptr; }
@@ -65,7 +65,7 @@ private:
     }
 
 public:
-    V3ListEnt() {}
+    V3ListEnt() = default;
     ~V3ListEnt() {
 #ifdef VL_DEBUG
         // Load bogus pointers so we can catch deletion bugs
diff --git a/src/V3Localize.cpp b/src/V3Localize.cpp
index f412649cf..6ac5830f1 100644
--- a/src/V3Localize.cpp
+++ b/src/V3Localize.cpp
@@ -85,7 +85,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit LocalizeDehierVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~LocalizeDehierVisitor() override {}
+    virtual ~LocalizeDehierVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3MergeCond.cpp b/src/V3MergeCond.cpp
index e7dcb3955..967c715d3 100644
--- a/src/V3MergeCond.cpp
+++ b/src/V3MergeCond.cpp
@@ -86,7 +86,7 @@ private:
     }
 
 public:
-    CheckMergeableVisitor() {}
+    CheckMergeableVisitor() = default;
 
     // Return false if this node should not be merged at all because:
     // - It contains an impure expression
diff --git a/src/V3Name.cpp b/src/V3Name.cpp
index 0d5401bf5..1ac76a283 100644
--- a/src/V3Name.cpp
+++ b/src/V3Name.cpp
@@ -136,7 +136,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit NameVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~NameVisitor() override {}
+    virtual ~NameVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Options.cpp b/src/V3Options.cpp
index 799c7ed87..b8ec760e5 100644
--- a/src/V3Options.cpp
+++ b/src/V3Options.cpp
@@ -99,8 +99,8 @@ public:
             m_libExtVs.push_back(libext);
         }
     }
-    V3OptionsImp() {}
-    ~V3OptionsImp() {}
+    V3OptionsImp() = default;
+    ~V3OptionsImp() = default;
 };
 
 //######################################################################
diff --git a/src/V3Order.cpp b/src/V3Order.cpp
index 862e7d366..baeda2cb1 100644
--- a/src/V3Order.cpp
+++ b/src/V3Order.cpp
@@ -219,7 +219,7 @@ public:
     OrderUser() {
         for (auto& vertexp : m_vertexp) vertexp = nullptr;
     }
-    ~OrderUser() {}
+    ~OrderUser() = default;
 };
 
 //######################################################################
@@ -366,7 +366,7 @@ public:
             iterate(nodep);
         } while (m_newClkMarked);
     }
-    virtual ~OrderClkMarkVisitor() override {}
+    virtual ~OrderClkMarkVisitor() override = default;
 };
 
 //######################################################################
@@ -397,7 +397,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit OrderClkAssVisitor(AstNode* nodep) { iterate(nodep); }
-    virtual ~OrderClkAssVisitor() override {}
+    virtual ~OrderClkAssVisitor() override = default;
     // METHODS
     bool isClkAss() const { return m_clkAss; }
 };
@@ -457,7 +457,7 @@ public:
         : m_graphp{logicGraphp}
         , m_outGraphp{outGraphp}
         , m_vxMakerp{vxMakerp} {}
-    virtual ~ProcessMoveBuildGraph() {}
+    virtual ~ProcessMoveBuildGraph() = default;
 
     // METHODS
     void build() {
@@ -621,8 +621,8 @@ public:
 
 class MTaskVxIdLessThan {
 public:
-    MTaskVxIdLessThan() {}
-    virtual ~MTaskVxIdLessThan() {}
+    MTaskVxIdLessThan() = default;
+    virtual ~MTaskVxIdLessThan() = default;
 
     // Sort vertex's, which must be AbstractMTask's, into a deterministic
     // order by comparing their serial IDs.
@@ -755,7 +755,7 @@ private:
         AstMTaskBody* m_mtaskBodyp = nullptr;
         Logics m_logics;
         ExecMTask* m_execMTaskp = nullptr;
-        MTaskState() {}
+        MTaskState() = default;
     };
     void processMTasks();
     typedef enum : uint8_t { LOGIC_INITIAL, LOGIC_SETTLE } InitialLogicE;
diff --git a/src/V3OrderGraph.h b/src/V3OrderGraph.h
index e24db578a..9ff15d083 100644
--- a/src/V3OrderGraph.h
+++ b/src/V3OrderGraph.h
@@ -112,8 +112,8 @@ inline bool operator==(OrderVEdgeType::en lhs, const OrderVEdgeType& rhs) {
 
 class OrderGraph : public V3Graph {
 public:
-    OrderGraph() {}
-    virtual ~OrderGraph() override {}
+    OrderGraph() = default;
+    virtual ~OrderGraph() override = default;
     // Methods
     virtual void loopsVertexCb(V3GraphVertex* vertexp) override;
 };
@@ -137,7 +137,7 @@ public:
         : V3GraphVertex{graphp}
         , m_scopep{scopep}
         , m_domainp{domainp} {}
-    virtual ~OrderEitherVertex() override {}
+    virtual ~OrderEitherVertex() override = default;
     virtual OrderEitherVertex* clone(V3Graph* graphp) const override = 0;
     // Methods
     virtual OrderVEdgeType type() const = 0;
@@ -160,7 +160,7 @@ public:
         : OrderEitherVertex{graphp, nullptr, domainp} {
         isFromInput(true);  // By definition
     }
-    virtual ~OrderInputsVertex() override {}
+    virtual ~OrderInputsVertex() override = default;
     virtual OrderInputsVertex* clone(V3Graph* graphp) const override {
         return new OrderInputsVertex(graphp, *this);
     }
@@ -183,7 +183,7 @@ public:
     OrderLogicVertex(V3Graph* graphp, AstScope* scopep, AstSenTree* domainp, AstNode* nodep)
         : OrderEitherVertex{graphp, scopep, domainp}
         , m_nodep{nodep} {}
-    virtual ~OrderLogicVertex() override {}
+    virtual ~OrderLogicVertex() override = default;
     virtual OrderLogicVertex* clone(V3Graph* graphp) const override {
         return new OrderLogicVertex(graphp, *this);
     }
@@ -212,7 +212,7 @@ public:
     OrderVarVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : OrderEitherVertex{graphp, scopep, nullptr}
         , m_varScp{varScp} {}
-    virtual ~OrderVarVertex() override {}
+    virtual ~OrderVarVertex() override = default;
     virtual OrderVarVertex* clone(V3Graph* graphp) const override = 0;
     virtual OrderVEdgeType type() const override = 0;
     virtual FileLine* fileline() const override { return varScp()->fileline(); }
@@ -231,7 +231,7 @@ class OrderVarStdVertex : public OrderVarVertex {
 public:
     OrderVarStdVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : OrderVarVertex{graphp, scopep, varScp} {}
-    virtual ~OrderVarStdVertex() override {}
+    virtual ~OrderVarStdVertex() override = default;
     virtual OrderVarStdVertex* clone(V3Graph* graphp) const override {
         return new OrderVarStdVertex(graphp, *this);
     }
@@ -249,7 +249,7 @@ class OrderVarPreVertex : public OrderVarVertex {
 public:
     OrderVarPreVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : OrderVarVertex{graphp, scopep, varScp} {}
-    virtual ~OrderVarPreVertex() override {}
+    virtual ~OrderVarPreVertex() override = default;
     virtual OrderVarPreVertex* clone(V3Graph* graphp) const override {
         return new OrderVarPreVertex(graphp, *this);
     }
@@ -271,7 +271,7 @@ public:
         return new OrderVarPostVertex(graphp, *this);
     }
     virtual OrderVEdgeType type() const override { return OrderVEdgeType::VERTEX_VARPOST; }
-    virtual ~OrderVarPostVertex() override {}
+    virtual ~OrderVarPostVertex() override = default;
     virtual string name() const override {
         return (cvtToHex(varScp()) + " POST\\n " + varScp()->name());
     }
@@ -285,7 +285,7 @@ class OrderVarPordVertex : public OrderVarVertex {
 public:
     OrderVarPordVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : OrderVarVertex{graphp, scopep, varScp} {}
-    virtual ~OrderVarPordVertex() override {}
+    virtual ~OrderVarPordVertex() override = default;
     virtual OrderVarPordVertex* clone(V3Graph* graphp) const override {
         return new OrderVarPordVertex(graphp, *this);
     }
@@ -303,7 +303,7 @@ class OrderVarSettleVertex : public OrderVarVertex {
 public:
     OrderVarSettleVertex(V3Graph* graphp, AstScope* scopep, AstVarScope* varScp)
         : OrderVarVertex{graphp, scopep, varScp} {}
-    virtual ~OrderVarSettleVertex() override {}
+    virtual ~OrderVarSettleVertex() override = default;
     virtual OrderVarSettleVertex* clone(V3Graph* graphp) const override {
         return new OrderVarSettleVertex(graphp, *this);
     }
@@ -339,7 +339,7 @@ public:
         , m_logicp{logicp}
         , m_state{POM_WAIT}
         , m_domScopep{nullptr} {}
-    virtual ~OrderMoveVertex() override {}
+    virtual ~OrderMoveVertex() override = default;
     virtual OrderMoveVertex* clone(V3Graph* graphp) const override {
         v3fatalSrc("Unsupported");
         return nullptr;
@@ -409,7 +409,7 @@ public:
         , m_domainp{domainp} {
         UASSERT(!(logicp && varp), "MTaskMoveVertex: logicp and varp may not both be set!\n");
     }
-    virtual ~MTaskMoveVertex() override {}
+    virtual ~MTaskMoveVertex() override = default;
     virtual MTaskMoveVertex* clone(V3Graph* graphp) const override {
         v3fatalSrc("Unsupported");
         return nullptr;
@@ -454,7 +454,7 @@ public:
     OrderEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top, int weight,
               bool cutable = false)
         : V3GraphEdge{graphp, fromp, top, weight, cutable} {}
-    virtual ~OrderEdge() override {}
+    virtual ~OrderEdge() override = default;
     virtual OrderVEdgeType type() const { return OrderVEdgeType::EDGE_STD; }
     virtual OrderEdge* clone(V3Graph* graphp, V3GraphVertex* fromp,
                              V3GraphVertex* top) const override {
@@ -482,7 +482,7 @@ public:
     OrderComboCutEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : OrderEdge{graphp, fromp, top, WEIGHT_COMBO, CUTABLE} {}
     virtual OrderVEdgeType type() const override { return OrderVEdgeType::EDGE_COMBOCUT; }
-    virtual ~OrderComboCutEdge() override {}
+    virtual ~OrderComboCutEdge() override = default;
     virtual OrderComboCutEdge* clone(V3Graph* graphp, V3GraphVertex* fromp,
                                      V3GraphVertex* top) const override {
         return new OrderComboCutEdge(graphp, fromp, top, *this);
@@ -503,7 +503,7 @@ public:
     OrderPostCutEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : OrderEdge{graphp, fromp, top, WEIGHT_COMBO, CUTABLE} {}
     virtual OrderVEdgeType type() const override { return OrderVEdgeType::EDGE_POSTCUT; }
-    virtual ~OrderPostCutEdge() override {}
+    virtual ~OrderPostCutEdge() override = default;
     virtual OrderPostCutEdge* clone(V3Graph* graphp, V3GraphVertex* fromp,
                                     V3GraphVertex* top) const override {
         return new OrderPostCutEdge(graphp, fromp, top, *this);
@@ -528,7 +528,7 @@ public:
                                    V3GraphVertex* top) const override {
         return new OrderPreCutEdge(graphp, fromp, top, *this);
     }
-    virtual ~OrderPreCutEdge() override {}
+    virtual ~OrderPreCutEdge() override = default;
     virtual string dotColor() const override { return "khaki"; }
     virtual bool followComboConnected() const override { return false; }
 };
diff --git a/src/V3Param.cpp b/src/V3Param.cpp
index 8b03ed87a..219356b2f 100644
--- a/src/V3Param.cpp
+++ b/src/V3Param.cpp
@@ -785,7 +785,7 @@ public:
         //
         iterate(nodep);
     }
-    virtual ~ParamVisitor() override {}
+    virtual ~ParamVisitor() override = default;
 };
 
 //----------------------------------------------------------------------
diff --git a/src/V3ParseLex.cpp b/src/V3ParseLex.cpp
index 45f0cfb96..709f2fe96 100644
--- a/src/V3ParseLex.cpp
+++ b/src/V3ParseLex.cpp
@@ -37,7 +37,7 @@ public:
     // CONSTRUCTORS
     V3Lexer()
         : V3LexerBase{nullptr} {}
-    ~V3Lexer() override {}
+    ~V3Lexer() override = default;
     // METHODS
     void unputString(const char* textp, size_t length) {
         // Add characters to input stream in back-to-front order
diff --git a/src/V3ParseSym.h b/src/V3ParseSym.h
index 3837aa096..60a829ace 100644
--- a/src/V3ParseSym.h
+++ b/src/V3ParseSym.h
@@ -50,7 +50,7 @@ public:
         pushScope(findNewTable(rootp));
         m_symCurrentp = symCurrentp();
     }
-    ~V3ParseSym() {}
+    ~V3ParseSym() = default;
 
 private:
     // METHODS
diff --git a/src/V3Partition.cpp b/src/V3Partition.cpp
index 978587be2..afe723493 100644
--- a/src/V3Partition.cpp
+++ b/src/V3Partition.cpp
@@ -253,8 +253,8 @@ private:
     CpMap m_seen;  // Set of vertices we've seen
 
     // CONSTRUCTORS
-    PartPropagateCpSelfTest() {}
-    ~PartPropagateCpSelfTest() {}
+    PartPropagateCpSelfTest() = default;
+    ~PartPropagateCpSelfTest() = default;
 
     // METHODS
 protected:
@@ -368,8 +368,8 @@ public:
     //    in the future, using another Accessor adaptor.
     class CpCostAccessor {
     public:
-        CpCostAccessor() {}
-        ~CpCostAccessor() {}
+        CpCostAccessor() = default;
+        ~CpCostAccessor() = default;
         // Return cost of this node
         uint32_t cost(const V3GraphVertex* vxp) const {
             const LogicMTask* mtaskp = dynamic_cast<const LogicMTask*>(vxp);
@@ -692,8 +692,8 @@ private:
 // which is a unique and stable serial number.
 class MTaskIdLessThan {
 public:
-    MTaskIdLessThan() {}
-    virtual ~MTaskIdLessThan() {}
+    MTaskIdLessThan() = default;
+    virtual ~MTaskIdLessThan() = default;
     virtual bool operator()(const AbstractMTask* lhsp, const AbstractMTask* rhsp) const {
         return lhsp->id() < rhsp->id();
     }
@@ -739,7 +739,7 @@ public:
             m_bp = ap;
         }
     }
-    virtual ~SiblingMC() {}
+    virtual ~SiblingMC() = default;
     // METHODS
     LogicMTask* ap() const { return m_ap; }
     LogicMTask* bp() const { return m_bp; }
@@ -1663,7 +1663,7 @@ public:
     // CONSTRUCTORS
     explicit DpiImportCallVisitor(AstNode* nodep) { iterate(nodep); }
     bool hasDpiHazard() const { return m_hasDpiHazard; }
-    virtual ~DpiImportCallVisitor() override {}
+    virtual ~DpiImportCallVisitor() override = default;
 
 private:
     VL_UNCOPYABLE(DpiImportCallVisitor);
@@ -2052,7 +2052,7 @@ public:
         , m_sandbagNumerator{sandbagNumerator}
         , m_sandbagDenom{sandbagDenom}
         , m_ready{m_mtaskCmp} {}
-    ~PartPackMTasks() {}
+    ~PartPackMTasks() = default;
 
     // METHODS
     uint32_t completionTime(const ExecMTask* mtaskp, uint32_t thread) {
diff --git a/src/V3Partition.h b/src/V3Partition.h
index 231ebf8d2..46cc267b2 100644
--- a/src/V3Partition.h
+++ b/src/V3Partition.h
@@ -41,7 +41,7 @@ public:
     // CONSTRUCTORS
     explicit V3Partition(V3Graph* fineDepsGraphp)
         : m_fineDepsGraphp{fineDepsGraphp} {}
-    ~V3Partition() {}
+    ~V3Partition() = default;
 
     // METHODS
 
@@ -83,7 +83,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    PartPtrIdMap() {}
+    PartPtrIdMap() = default;
     // METHODS
     vluint64_t findId(const void* ptrp) const {
         const auto it = m_id.find(ptrp);
diff --git a/src/V3PartitionGraph.h b/src/V3PartitionGraph.h
index d79fa83e7..789125bba 100644
--- a/src/V3PartitionGraph.h
+++ b/src/V3PartitionGraph.h
@@ -32,7 +32,7 @@ class AbstractMTask : public V3GraphVertex {
 public:
     AbstractMTask(V3Graph* graphp)
         : V3GraphVertex{graphp} {}
-    virtual ~AbstractMTask() override {}
+    virtual ~AbstractMTask() override = default;
     virtual uint32_t id() const = 0;
     virtual uint32_t cost() const = 0;
 };
@@ -44,7 +44,7 @@ public:
     // CONSTRUCTORS
     AbstractLogicMTask(V3Graph* graphp)
         : AbstractMTask{graphp} {}
-    virtual ~AbstractLogicMTask() override {}
+    virtual ~AbstractLogicMTask() override = default;
     // METHODS
     // Set of logic vertices in this mtask. Order is not significant.
     virtual const VxList* vertexListp() const = 0;
diff --git a/src/V3PreProc.cpp b/src/V3PreProc.cpp
index 0b1b0d782..9a4250676 100644
--- a/src/V3PreProc.cpp
+++ b/src/V3PreProc.cpp
@@ -83,7 +83,7 @@ public:
     VDefineRef(const string& name, const string& params)
         : m_name{name}
         , m_params{params} {}
-    ~VDefineRef() {}
+    ~VDefineRef() = default;
 };
 
 //*************************************************************************
@@ -99,7 +99,7 @@ public:
     VPreIfEntry(bool on, bool everOn)
         : m_on{on}
         , m_everOn{everOn || on} {}  // Note everOn includes new state
-    ~VPreIfEntry() {}
+    ~VPreIfEntry() = default;
 };
 
 //*************************************************************************
diff --git a/src/V3PreProc.h b/src/V3PreProc.h
index de2d02215..aae1dff36 100644
--- a/src/V3PreProc.h
+++ b/src/V3PreProc.h
@@ -103,7 +103,7 @@ protected:
 
 public:
     static V3PreProc* createPreProc(FileLine* fl);
-    virtual ~V3PreProc() {}  // LCOV_EXCL_LINE  // Persistent
+    virtual ~V3PreProc() = default;  // LCOV_EXCL_LINE  // Persistent
 };
 
 #endif  // Guard
diff --git a/src/V3PreShell.cpp b/src/V3PreShell.cpp
index 54de5495d..bdef192cd 100644
--- a/src/V3PreShell.cpp
+++ b/src/V3PreShell.cpp
@@ -151,8 +151,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    V3PreShellImp() {}
-    ~V3PreShellImp() {}
+    V3PreShellImp() = default;
+    ~V3PreShellImp() = default;
 };
 
 V3PreShellImp V3PreShellImp::s_preImp;
diff --git a/src/V3Premit.cpp b/src/V3Premit.cpp
index 7e432830a..bdbff1af1 100644
--- a/src/V3Premit.cpp
+++ b/src/V3Premit.cpp
@@ -75,7 +75,7 @@ public:
         UINFO(4, "  PremitAssignVisitor on " << nodep << endl);
         iterate(nodep);
     }
-    virtual ~PremitAssignVisitor() override {}
+    virtual ~PremitAssignVisitor() override = default;
     bool noOpt() const { return m_noopt; }
 };
 
@@ -397,7 +397,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit PremitVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~PremitVisitor() override {}
+    virtual ~PremitVisitor() override = default;
 };
 
 //----------------------------------------------------------------------
diff --git a/src/V3Scope.cpp b/src/V3Scope.cpp
index 6195ffc98..a26971951 100644
--- a/src/V3Scope.cpp
+++ b/src/V3Scope.cpp
@@ -313,7 +313,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit ScopeVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~ScopeVisitor() override {}
+    virtual ~ScopeVisitor() override = default;
 };
 
 //######################################################################
@@ -391,7 +391,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit ScopeCleanupVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~ScopeCleanupVisitor() override {}
+    virtual ~ScopeCleanupVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Scoreboard.cpp b/src/V3Scoreboard.cpp
index a4ffda454..cf25c090e 100644
--- a/src/V3Scoreboard.cpp
+++ b/src/V3Scoreboard.cpp
@@ -30,7 +30,7 @@ public:
         static uint32_t s_serial = 0;
         m_id = ++s_serial;
     }
-    ScoreboardTestElem() {}
+    ScoreboardTestElem() = default;
     // METHODS
     static uint32_t scoreFn(const ScoreboardTestElem* elp) { return elp->m_score; }
 
diff --git a/src/V3Scoreboard.h b/src/V3Scoreboard.h
index beffd2ca7..2aa8207c3 100644
--- a/src/V3Scoreboard.h
+++ b/src/V3Scoreboard.h
@@ -54,7 +54,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    SortByValueMap() {}
+    SortByValueMap() = default;
 
     class const_iterator {
         // TYPES
@@ -375,7 +375,7 @@ public:
     explicit V3Scoreboard(UserScoreFnp scoreFnp, bool slowAsserts)
         : m_scoreFnp{scoreFnp}
         , m_slowAsserts{slowAsserts} {}
-    ~V3Scoreboard() {}
+    ~V3Scoreboard() = default;
 
     // METHODS
 
diff --git a/src/V3SenTree.h b/src/V3SenTree.h
index 806b5919f..b1fa10947 100644
--- a/src/V3SenTree.h
+++ b/src/V3SenTree.h
@@ -53,7 +53,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    SenTreeSet() {}
+    SenTreeSet() = default;
 
     // METHODS
     void add(AstSenTree* nodep) { m_trees.insert(nodep); }
@@ -81,7 +81,7 @@ private:
 
 public:
     // CONSTRUCTORS
-    SenTreeFinder() {}
+    SenTreeFinder() = default;
 
     // METHODS
     AstSenTree* getSenTree(AstSenTree* senTreep) {
diff --git a/src/V3Simulate.h b/src/V3Simulate.h
index 846d303f5..cec2c81ee 100644
--- a/src/V3Simulate.h
+++ b/src/V3Simulate.h
@@ -57,7 +57,7 @@ public:
     SimStackNode(AstFuncRef* funcp, V3TaskConnects* tconnects)
         : m_funcp{funcp}
         , m_tconnects{tconnects} {}
-    ~SimStackNode() {}
+    ~SimStackNode() = default;
 };
 
 typedef std::deque<AstConst*> ConstDeque;
diff --git a/src/V3Slice.cpp b/src/V3Slice.cpp
index ccf559bbc..76a31cde6 100644
--- a/src/V3Slice.cpp
+++ b/src/V3Slice.cpp
@@ -225,7 +225,7 @@ class SliceVisitor : public AstNVisitor {
 public:
     // CONSTRUCTORS
     explicit SliceVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~SliceVisitor() override {}
+    virtual ~SliceVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Split.cpp b/src/V3Split.cpp
index bb528c0ae..83fc53856 100644
--- a/src/V3Split.cpp
+++ b/src/V3Split.cpp
@@ -102,7 +102,7 @@ protected:
     SplitNodeVertex(V3Graph* graphp, AstNode* nodep)
         : V3GraphVertex{graphp}
         , m_nodep{nodep} {}
-    virtual ~SplitNodeVertex() override {}
+    virtual ~SplitNodeVertex() override = default;
     // ACCESSORS
     // Do not make accessor for nodep(),  It may change due to
     // reordering a lower block, but we don't repair it
@@ -119,7 +119,7 @@ class SplitPliVertex : public SplitNodeVertex {
 public:
     explicit SplitPliVertex(V3Graph* graphp, AstNode* nodep)
         : SplitNodeVertex{graphp, nodep} {}
-    virtual ~SplitPliVertex() override {}
+    virtual ~SplitPliVertex() override = default;
     virtual string name() const override { return "*PLI*"; }
     virtual string dotColor() const override { return "green"; }
 };
@@ -128,7 +128,7 @@ class SplitLogicVertex : public SplitNodeVertex {
 public:
     SplitLogicVertex(V3Graph* graphp, AstNode* nodep)
         : SplitNodeVertex{graphp, nodep} {}
-    virtual ~SplitLogicVertex() override {}
+    virtual ~SplitLogicVertex() override = default;
     virtual string dotColor() const override { return "yellow"; }
 };
 
@@ -136,7 +136,7 @@ class SplitVarStdVertex : public SplitNodeVertex {
 public:
     SplitVarStdVertex(V3Graph* graphp, AstNode* nodep)
         : SplitNodeVertex{graphp, nodep} {}
-    virtual ~SplitVarStdVertex() override {}
+    virtual ~SplitVarStdVertex() override = default;
     virtual string dotColor() const override { return "skyblue"; }
 };
 
@@ -144,7 +144,7 @@ class SplitVarPostVertex : public SplitNodeVertex {
 public:
     SplitVarPostVertex(V3Graph* graphp, AstNode* nodep)
         : SplitNodeVertex{graphp, nodep} {}
-    virtual ~SplitVarPostVertex() override {}
+    virtual ~SplitVarPostVertex() override = default;
     virtual string name() const override { return string("POST ") + SplitNodeVertex::name(); }
     virtual string dotColor() const override { return "CadetBlue"; }
 };
@@ -160,7 +160,7 @@ protected:
     SplitEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top, int weight,
               bool cutable = CUTABLE)
         : V3GraphEdge{graphp, fromp, top, weight, cutable} {}
-    virtual ~SplitEdge() override {}
+    virtual ~SplitEdge() override = default;
 
 public:
     // Iterator for graph functions
@@ -189,7 +189,7 @@ class SplitPostEdge : public SplitEdge {
 public:
     SplitPostEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : SplitEdge{graphp, fromp, top, WEIGHT_NORMAL} {}
-    virtual ~SplitPostEdge() override {}
+    virtual ~SplitPostEdge() override = default;
     virtual bool followScoreboard() const override { return false; }
     virtual string dotColor() const override { return "khaki"; }
 };
@@ -198,7 +198,7 @@ class SplitLVEdge : public SplitEdge {
 public:
     SplitLVEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : SplitEdge{graphp, fromp, top, WEIGHT_NORMAL} {}
-    virtual ~SplitLVEdge() override {}
+    virtual ~SplitLVEdge() override = default;
     virtual bool followScoreboard() const override { return true; }
     virtual string dotColor() const override { return "yellowGreen"; }
 };
@@ -207,7 +207,7 @@ class SplitRVEdge : public SplitEdge {
 public:
     SplitRVEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : SplitEdge{graphp, fromp, top, WEIGHT_NORMAL} {}
-    virtual ~SplitRVEdge() override {}
+    virtual ~SplitRVEdge() override = default;
     virtual bool followScoreboard() const override { return true; }
     virtual string dotColor() const override { return "green"; }
 };
@@ -216,7 +216,7 @@ struct SplitScorebdEdge : public SplitEdge {
 public:
     SplitScorebdEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : SplitEdge{graphp, fromp, top, WEIGHT_NORMAL} {}
-    virtual ~SplitScorebdEdge() override {}
+    virtual ~SplitScorebdEdge() override = default;
     virtual bool followScoreboard() const override { return true; }
     virtual string dotColor() const override { return "blue"; }
 };
@@ -227,7 +227,7 @@ struct SplitStrictEdge : public SplitEdge {
 public:
     SplitStrictEdge(V3Graph* graphp, V3GraphVertex* fromp, V3GraphVertex* top)
         : SplitEdge{graphp, fromp, top, WEIGHT_NORMAL, NOT_CUTABLE} {}
-    virtual ~SplitStrictEdge() override {}
+    virtual ~SplitStrictEdge() override = default;
     virtual bool followScoreboard() const override { return true; }
     virtual string dotColor() const override { return "blue"; }
 };
@@ -443,7 +443,7 @@ class ReorderVisitor : public SplitReorderBaseVisitor {
     // CONSTRUCTORS
 public:
     explicit ReorderVisitor(AstNetlist* nodep) { iterate(nodep); }
-    virtual ~ReorderVisitor() override {}
+    virtual ~ReorderVisitor() override = default;
 
     // METHODS
 protected:
@@ -638,7 +638,7 @@ public:
     // Visit through *nodep and map each AstNodeIf within to the set of
     // colors it will participate in. Also find the whole set of colors.
     explicit IfColorVisitor(AstAlways* nodep) { iterate(nodep); }
-    virtual ~IfColorVisitor() override {}
+    virtual ~IfColorVisitor() override = default;
 
     // METHODS
     const ColorSet& colors() const { return m_colors; }
@@ -703,7 +703,7 @@ public:
         UINFO(6, "  splitting always " << nodep << endl);
     }
 
-    virtual ~EmitSplitVisitor() override {}
+    virtual ~EmitSplitVisitor() override = default;
 
     // METHODS
     void go() {
@@ -804,7 +804,7 @@ public:
             VL_DO_DANGLING(np->deleteTree(), np);
         }
     }
-    virtual ~RemovePlaceholdersVisitor() override {}
+    virtual ~RemovePlaceholdersVisitor() override = default;
     virtual void visit(AstSplitPlaceholder* nodep) override { m_removeSet.insert(nodep); }
     virtual void visit(AstNode* nodep) override { iterateChildren(nodep); }
 
@@ -844,7 +844,7 @@ public:
         }
     }
 
-    virtual ~SplitVisitor() override {}
+    virtual ~SplitVisitor() override = default;
 
     // METHODS
 protected:
diff --git a/src/V3SplitAs.cpp b/src/V3SplitAs.cpp
index 48a1c2960..8b69134e6 100644
--- a/src/V3SplitAs.cpp
+++ b/src/V3SplitAs.cpp
@@ -58,7 +58,7 @@ private:
 public:
     // CONSTRUCTORS
     explicit SplitAsFindVisitor(AstAlways* nodep) { iterate(nodep); }
-    virtual ~SplitAsFindVisitor() override {}
+    virtual ~SplitAsFindVisitor() override = default;
     // METHODS
     AstVarScope* splitVscp() const { return m_splitVscp; }
 };
@@ -118,7 +118,7 @@ public:
         , m_modeMatch{modeMatch} {
         iterate(nodep);
     }
-    virtual ~SplitAsCleanVisitor() override {}
+    virtual ~SplitAsCleanVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Stats.h b/src/V3Stats.h
index 5b6129e63..084eb312c 100644
--- a/src/V3Stats.h
+++ b/src/V3Stats.h
@@ -94,7 +94,7 @@ public:
         , m_stage{stage}
         , m_sumit{sumit}
         , m_perf{perf} {}
-    virtual ~V3Statistic() {}
+    virtual ~V3Statistic() = default;
 };
 
 //============================================================================
diff --git a/src/V3StatsReport.cpp b/src/V3StatsReport.cpp
index 71db187a3..14ad340ea 100644
--- a/src/V3StatsReport.cpp
+++ b/src/V3StatsReport.cpp
@@ -186,7 +186,7 @@ public:
         stars();
         stages();
     }
-    ~StatsReport() {}
+    ~StatsReport() = default;
 };
 
 StatsReport::StatColl StatsReport::s_allStats;
diff --git a/src/V3String.h b/src/V3String.h
index a8f8361ad..1a700d264 100644
--- a/src/V3String.h
+++ b/src/V3String.h
@@ -131,7 +131,7 @@ public:
         : VHashSha256{} {
         insert(data);
     }
-    ~VHashSha256() {}
+    ~VHashSha256() = default;
 
     // METHODS
     string digestBinary();  // Return digest as 32 character binary
@@ -169,7 +169,7 @@ public:
     // CONSTRUCTORS
     explicit VName(const string& name)
         : m_name{name} {}
-    ~VName() {}
+    ~VName() = default;
     // METHODS
     void name(const string& name) {
         m_name = name;
@@ -198,8 +198,8 @@ class VSpellCheck {
     Candidates m_candidates;  // Strings we try to match
 public:
     // CONSTRUCTORS
-    explicit VSpellCheck() {}
-    ~VSpellCheck() {}
+    VSpellCheck() = default;
+    ~VSpellCheck() = default;
     // METHODS
     // Push a symbol table value to be considered as a candidate
     // The first item pushed has highest priority, all else being equal
diff --git a/src/V3Subst.cpp b/src/V3Subst.cpp
index d8a01fbb3..8590a57cf 100644
--- a/src/V3Subst.cpp
+++ b/src/V3Subst.cpp
@@ -81,7 +81,7 @@ public:
         m_whole.clear();
         for (int i = 0; i < varp->widthWords(); i++) m_words[i].clear();
     }
-    ~SubstVarEntry() {}
+    ~SubstVarEntry() = default;
 
 private:
     // METHODS
@@ -213,7 +213,7 @@ public:
         UINFO(9, "        SubstUseVisitor " << origStep << " " << nodep << endl);
         iterate(nodep);
     }
-    virtual ~SubstUseVisitor() override {}
+    virtual ~SubstUseVisitor() override = default;
     // METHODS
     bool ok() const { return m_ok; }
 };
diff --git a/src/V3TSP.cpp b/src/V3TSP.cpp
index 3cd98df8d..b107530f8 100644
--- a/src/V3TSP.cpp
+++ b/src/V3TSP.cpp
@@ -59,7 +59,7 @@ public:
     TspVertexTmpl(V3Graph* graphp, const T_Key& k)
         : V3GraphVertex{graphp}
         , m_key{k} {}
-    virtual ~TspVertexTmpl() override {}
+    virtual ~TspVertexTmpl() override = default;
     const T_Key& key() const { return m_key; }
 
 private:
@@ -80,7 +80,7 @@ public:
     // CONSTRUCTORS
     TspGraphTmpl()
         : V3Graph{} {}
-    virtual ~TspGraphTmpl() override {}
+    virtual ~TspGraphTmpl() override = default;
 
     // METHODS
     void addVertex(const T_Key& key) {
@@ -125,7 +125,7 @@ public:
         // perfectMatching() routine.
     public:
         // CONSTRUCTORS
-        EdgeCmp() {}
+        EdgeCmp() = default;
         // METHODS
         bool operator()(const V3GraphEdge* ap, const V3GraphEdge* bp) {
             int aCost = ap->weight();
@@ -500,7 +500,7 @@ public:
         : m_xpos{xpos}
         , m_ypos{ypos}
         , m_serial{++m_serialNext} {}
-    ~TspTestState() {}
+    ~TspTestState() = default;
     virtual int cost(const TspStateBase* otherp) const override {
         return cost(dynamic_cast<const TspTestState*>(otherp));
     }
diff --git a/src/V3Table.cpp b/src/V3Table.cpp
index dcec7c663..6918493e1 100644
--- a/src/V3Table.cpp
+++ b/src/V3Table.cpp
@@ -59,7 +59,7 @@ public:
     // CONSTRUCTORS
     explicit TableSimulateVisitor(TableVisitor* cbthis)
         : m_cbthis{cbthis} {}
-    virtual ~TableSimulateVisitor() override {}
+    virtual ~TableSimulateVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Task.cpp b/src/V3Task.cpp
index 9d210679e..574117607 100644
--- a/src/V3Task.cpp
+++ b/src/V3Task.cpp
@@ -45,7 +45,7 @@ class TaskBaseVertex : public V3GraphVertex {
 public:
     explicit TaskBaseVertex(V3Graph* graphp)
         : V3GraphVertex{graphp} {}
-    virtual ~TaskBaseVertex() override {}
+    virtual ~TaskBaseVertex() override = default;
     bool pure() const { return m_impurep == nullptr; }
     AstNode* impureNode() const { return m_impurep; }
     void impure(AstNode* nodep) { m_impurep = nodep; }
@@ -62,7 +62,7 @@ public:
     TaskFTaskVertex(V3Graph* graphp, AstNodeFTask* nodep)
         : TaskBaseVertex{graphp}
         , m_nodep{nodep} {}
-    virtual ~TaskFTaskVertex() override {}
+    virtual ~TaskFTaskVertex() override = default;
     AstNodeFTask* nodep() const { return m_nodep; }
     virtual string name() const override { return nodep()->name(); }
     virtual string dotColor() const override { return pure() ? "black" : "red"; }
@@ -76,7 +76,7 @@ class TaskCodeVertex : public TaskBaseVertex {
 public:
     explicit TaskCodeVertex(V3Graph* graphp)
         : TaskBaseVertex{graphp} {}
-    virtual ~TaskCodeVertex() override {}
+    virtual ~TaskCodeVertex() override = default;
     virtual string name() const override { return "*CODE*"; }
     virtual string dotColor() const override { return "green"; }
 };
@@ -85,7 +85,7 @@ class TaskEdge : public V3GraphEdge {
 public:
     TaskEdge(V3Graph* graphp, TaskBaseVertex* fromp, TaskBaseVertex* top)
         : V3GraphEdge{graphp, fromp, top, 1, false} {}
-    virtual ~TaskEdge() override {}
+    virtual ~TaskEdge() override = default;
     virtual string dotLabel() const override { return "w" + cvtToStr(weight()); }
 };
 
@@ -281,7 +281,7 @@ public:
         m_callGraph.removeRedundantEdgesSum(&TaskEdge::followAlwaysTrue);
         m_callGraph.dumpDotFilePrefixed("task_call");
     }
-    virtual ~TaskStateVisitor() override {}
+    virtual ~TaskStateVisitor() override = default;
     VL_UNCOPYABLE(TaskStateVisitor);
 };
 
@@ -317,7 +317,7 @@ public:
     explicit TaskRelinkVisitor(AstBegin* nodep) {  // Passed temporary tree
         iterate(nodep);
     }
-    virtual ~TaskRelinkVisitor() override {}
+    virtual ~TaskRelinkVisitor() override = default;
 };
 
 //######################################################################
@@ -1378,7 +1378,7 @@ public:
         : m_statep{statep} {
         iterate(nodep);
     }
-    virtual ~TaskVisitor() override {}
+    virtual ~TaskVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Trace.cpp b/src/V3Trace.cpp
index 28712534e..a1598bb70 100644
--- a/src/V3Trace.cpp
+++ b/src/V3Trace.cpp
@@ -71,7 +71,7 @@ public:
         m_activityCode = code;
         m_slow = false;
     }
-    virtual ~TraceActivityVertex() override {}
+    virtual ~TraceActivityVertex() override = default;
     // ACCESSORS
     AstNode* insertp() const {
         if (!m_insertp) v3fatalSrc("Null insertp; probably called on a special always/slow.");
@@ -102,7 +102,7 @@ public:
     TraceCFuncVertex(V3Graph* graphp, AstCFunc* nodep)
         : V3GraphVertex{graphp}
         , m_nodep{nodep} {}
-    virtual ~TraceCFuncVertex() override {}
+    virtual ~TraceCFuncVertex() override = default;
     // ACCESSORS
     AstCFunc* nodep() const { return m_nodep; }
     virtual string name() const override { return nodep()->name(); }
@@ -119,7 +119,7 @@ public:
     TraceTraceVertex(V3Graph* graphp, AstTraceDecl* nodep)
         : V3GraphVertex{graphp}
         , m_nodep{nodep} {}
-    virtual ~TraceTraceVertex() override {}
+    virtual ~TraceTraceVertex() override = default;
     // ACCESSORS
     AstTraceDecl* nodep() const { return m_nodep; }
     virtual string name() const override { return nodep()->name(); }
@@ -139,7 +139,7 @@ public:
     TraceVarVertex(V3Graph* graphp, AstVarScope* nodep)
         : V3GraphVertex{graphp}
         , m_nodep{nodep} {}
-    virtual ~TraceVarVertex() override {}
+    virtual ~TraceVarVertex() override = default;
     // ACCESSORS
     AstVarScope* nodep() const { return m_nodep; }
     virtual string name() const override { return nodep()->name(); }
diff --git a/src/V3Tristate.cpp b/src/V3Tristate.cpp
index 922fac45b..7b1fa24d2 100644
--- a/src/V3Tristate.cpp
+++ b/src/V3Tristate.cpp
@@ -87,7 +87,7 @@ public:
     TristateVertex(V3Graph* graphp, AstNode* nodep)
         : V3GraphVertex{graphp}
         , m_nodep{nodep} {}
-    virtual ~TristateVertex() override {}
+    virtual ~TristateVertex() override = default;
     // ACCESSORS
     AstNode* nodep() const { return m_nodep; }
     AstVar* varp() const { return VN_CAST(nodep(), Var); }
@@ -307,7 +307,7 @@ public:
         , m_lvalue{lvalue} {
         iterate(nodep);
     }
-    virtual ~TristatePinVisitor() override {}
+    virtual ~TristatePinVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3Undriven.cpp b/src/V3Undriven.cpp
index fdf90654c..1ff124aee 100644
--- a/src/V3Undriven.cpp
+++ b/src/V3Undriven.cpp
@@ -57,7 +57,7 @@ public:
         m_bitFlags.resize(varp->width() * FLAGS_PER_BIT);
         for (int i = 0; i < varp->width() * FLAGS_PER_BIT; i++) m_bitFlags[i] = false;
     }
-    ~UndrivenVarEntry() {}
+    ~UndrivenVarEntry() = default;
 
 private:
     // METHODS
diff --git a/src/V3Width.cpp b/src/V3Width.cpp
index 7afd7a905..5a01d586f 100644
--- a/src/V3Width.cpp
+++ b/src/V3Width.cpp
@@ -179,7 +179,7 @@ class WidthClearVisitor {
 public:
     // CONSTRUCTORS
     explicit WidthClearVisitor(AstNetlist* nodep) { clearWidthRecurse(nodep); }
-    virtual ~WidthClearVisitor() {}
+    virtual ~WidthClearVisitor() = default;
 };
 
 //######################################################################
@@ -5909,7 +5909,7 @@ public:
     AstNode* mainAcceptEdit(AstNode* nodep) {
         return userIterateSubtreeReturnEdits(nodep, WidthVP(SELF, BOTH).p());
     }
-    virtual ~WidthVisitor() override {}
+    virtual ~WidthVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3WidthCommit.h b/src/V3WidthCommit.h
index ff6e3c03a..047dec26e 100644
--- a/src/V3WidthCommit.h
+++ b/src/V3WidthCommit.h
@@ -55,8 +55,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    WidthRemoveVisitor() {}
-    virtual ~WidthRemoveVisitor() override {}
+    WidthRemoveVisitor() = default;
+    virtual ~WidthRemoveVisitor() override = default;
     AstNode* mainAcceptEdit(AstNode* nodep) { return iterateSubtreeReturnEdits(nodep); }
 };
 
@@ -171,7 +171,7 @@ public:
         // Don't want to repairCache, as all needed nodes have been added back in
         // a repair would prevent dead nodes from being detected
     }
-    virtual ~WidthCommitVisitor() override {}
+    virtual ~WidthCommitVisitor() override = default;
 };
 
 //######################################################################
diff --git a/src/V3WidthSel.cpp b/src/V3WidthSel.cpp
index c3232066d..71d805d20 100644
--- a/src/V3WidthSel.cpp
+++ b/src/V3WidthSel.cpp
@@ -67,7 +67,7 @@ private:
             : m_errp{errp}
             , m_dtypep{dtypep}
             , m_fromRange{fromRange} {}
-        ~FromData() {}
+        ~FromData() = default;
     };
     FromData fromDataForArray(AstNode* nodep, AstNode* basefromp) {
         // What is the data type and information for this SEL-ish's from()?
@@ -579,9 +579,9 @@ private:
 
 public:
     // CONSTRUCTORS
-    WidthSelVisitor() {}
+    WidthSelVisitor() = default;
+    virtual ~WidthSelVisitor() override = default;
     AstNode* mainAcceptEdit(AstNode* nodep) { return iterateSubtreeReturnEdits(nodep); }
-    virtual ~WidthSelVisitor() override {}
 };
 
 //######################################################################
diff --git a/src/VlcOptions.h b/src/VlcOptions.h
index 423bfd1eb..0efd39e0f 100644
--- a/src/VlcOptions.h
+++ b/src/VlcOptions.h
@@ -51,8 +51,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    VlcOptions() {}
-    ~VlcOptions() {}
+    VlcOptions() = default;
+    ~VlcOptions() = default;
 
     // METHODS
     void parseOptsList(int argc, char** argv);
diff --git a/src/VlcPoint.h b/src/VlcPoint.h
index 208dc5c56..ff88f00e0 100644
--- a/src/VlcPoint.h
+++ b/src/VlcPoint.h
@@ -42,7 +42,7 @@ public:
     VlcPoint(const string& name, vluint64_t pointNum)
         : m_name{name}
         , m_pointNum{pointNum} {}
-    ~VlcPoint() {}
+    ~VlcPoint() = default;
     // ACCESSORS
     const string& name() const { return m_name; }
     vluint64_t pointNum() const { return m_pointNum; }
@@ -106,8 +106,8 @@ public:
     ByName::iterator end() { return m_nameMap.end(); }
 
     // CONSTRUCTORS
-    VlcPoints() {}
-    ~VlcPoints() {}
+    VlcPoints() = default;
+    ~VlcPoints() = default;
 
     // METHODS
     void dump() {
diff --git a/src/VlcSource.h b/src/VlcSource.h
index 06d1cd847..adebdde3a 100644
--- a/src/VlcSource.h
+++ b/src/VlcSource.h
@@ -39,7 +39,7 @@ public:
     VlcSourceCount(int lineno, int column)
         : m_lineno{lineno}
         , m_column{column} {}
-    ~VlcSourceCount() {}
+    ~VlcSourceCount() = default;
 
     // ACCESSORS
     int lineno() const { return m_lineno; }
@@ -73,7 +73,7 @@ public:
     // CONSTRUCTORS
     explicit VlcSource(const string& name)
         : m_name{name} {}
-    ~VlcSource() {}
+    ~VlcSource() = default;
 
     // ACCESSORS
     const string& name() const { return m_name; }
@@ -114,8 +114,8 @@ public:
     NameMap::iterator end() { return m_sources.end(); }
 
     // CONSTRUCTORS
-    VlcSources() {}
-    ~VlcSources() {}
+    VlcSources() = default;
+    ~VlcSources() = default;
 
     // METHODS
     VlcSource& findNewSource(const string& name) {
diff --git a/src/VlcTest.h b/src/VlcTest.h
index d1489e661..c95e351d7 100644
--- a/src/VlcTest.h
+++ b/src/VlcTest.h
@@ -46,7 +46,7 @@ public:
         : m_name{name}
         , m_computrons{comp}
         , m_testrun{testrun} {}
-    ~VlcTest() {}
+    ~VlcTest() = default;
 
     // ACCESSORS
     const string& name() const { return m_name; }
@@ -100,7 +100,7 @@ public:
     ByName::iterator end() { return m_tests.end(); }
 
     // CONSTRUCTORS
-    VlcTests() {}
+    VlcTests() = default;
     ~VlcTests() {
         for (auto it = begin(); it != end(); ++it) { VL_DO_CLEAR(delete *it, *it = nullptr); }
     }
diff --git a/src/VlcTop.h b/src/VlcTop.h
index f54725fcf..b00edd110 100644
--- a/src/VlcTop.h
+++ b/src/VlcTop.h
@@ -45,8 +45,8 @@ private:
 
 public:
     // CONSTRUCTORS
-    VlcTop() {}
-    ~VlcTop() {}
+    VlcTop() = default;
+    ~VlcTop() = default;
 
     // ACCESSORS
     VlcTests& tests() { return m_tests; }