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Support 1800-2023 class and function :initial, :extends, :final virtual overrides (#5025). (#5025)

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Wilson Snyder 2024-03-27 23:57:58 -04:00 committed by GitHub
parent 28b9216f8a
commit 1ed5557d2d
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12 changed files with 566 additions and 16 deletions
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4
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@ -16,16 +16,18 @@ Verilator 5.023 devel
* Add printing summary reports, use `--quiet` or `+verilator+quiet` to suppress (#4909).
* Support 1800-2023 keywords, and parsing with UNDEFINED warnings.
* Support 1800-2023 preprocessor ifdef expressions.
* Support 1800-2023 DPI headers, svGetTime/svgGetTimeUnit/svGetTimePrecision methods.
**Minor:**
* Change 1800-2023 to be default language version.
* Add DFG 'regularize' pass, and improve variable removal (#4937). [Geza Lore]
* Add error when pass net to function argument (#4132) (#4966). [Fuad Ismail]
* Add `UNUSEDLOOP` when unused loop is removed (#4926). [Bartłomiej Chmiel, Antmicro Ltd.]
* Add custom version for verilator --version packaging (#4954). [Nolan Poe]
* Add error on missing pure virtual functions (#4961).
* Add error on calling static function without object (#4962).
* Support 1800-2023 DPI headers, svGetTime/svgGetTimeUnit/svGetTimePrecision methods.
* Support 1800-2023 class and function :initial, :extends, :final virtual overrides (#5025).
* Support public packed struct / union (#860) (#4878). [Kefa Chen]
* Support implicitly-typed variable definitions in for-loop initializers (#4945) (#4986). [Kevin Nygaard]
* Improve installation to be relocatable (#4927). [Geza Lore]

45
src/V3Ast.h
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@ -242,6 +242,51 @@ inline std::ostream& operator<<(std::ostream& os, const VAccess& rhs) { return o
// ######################################################################
class VBaseOverride final {
bool m_extends : 1;
bool m_final : 1;
bool m_initial : 1;
public:
VBaseOverride()
: m_extends{false}
, m_final{false}
, m_initial{false} {}
class Extends {};
VBaseOverride(Extends)
: m_extends{true}
, m_final{false}
, m_initial{false} {}
class Final {};
VBaseOverride(Final)
: m_extends{false}
, m_final{true}
, m_initial{false} {}
class Initial {};
VBaseOverride(Initial)
: m_extends{false}
, m_final{false}
, m_initial{true} {}
void combine(const VBaseOverride& other) {
m_extends |= other.m_extends;
m_final |= other.m_final;
m_initial |= other.m_initial;
}
bool isAny() const { return m_extends | m_final | m_initial; }
bool isExtends() const { return m_extends; }
bool isFinal() const { return m_final; }
bool isInitial() const { return m_initial; }
string ascii() const {
string out;
if (m_initial) out = VString::dot(out, " ", "initial");
if (m_extends) out = VString::dot(out, " ", "extends");
if (m_final) out = VString::dot(out, " ", "final");
return out;
}
};
// ######################################################################
class VSigning final {
public:
enum en : uint8_t {

6
src/V3AstNodeOther.h
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@ -87,6 +87,7 @@ class AstNodeFTask VL_NOT_FINAL : public AstNode {
bool m_underGenerate : 1; // Under generate (for warning)
bool m_virtual : 1; // Virtual method in class
bool m_needProcess : 1; // Needs access to VlProcess of the caller
VBaseOverride m_baseOverride; // BaseOverride (inital/final/extends)
VLifetime m_lifetime; // Default lifetime of local vars
VIsCached m_purity; // Pure state
@ -183,6 +184,8 @@ public:
bool isVirtual() const { return m_virtual; }
void setNeedProcess() { m_needProcess = true; }
bool needProcess() const { return m_needProcess; }
void baseOverride(const VBaseOverride& flag) { m_baseOverride = flag; }
VBaseOverride baseOverride() const { return m_baseOverride; }
void lifetime(const VLifetime& flag) { m_lifetime = flag; }
VLifetime lifetime() const { return m_lifetime; }
bool isFirstInMyListOfStatements(AstNode* n) const override { return n == stmtsp(); }
@ -2272,6 +2275,7 @@ class AstClass final : public AstNodeModule {
// @astgen op4 := extendsp : List[AstClassExtends]
// MEMBERS
// @astgen ptr := m_classOrPackagep : Optional[AstClassPackage] // Package to be emitted with
VBaseOverride m_baseOverride; // BaseOverride (inital/final/extends)
bool m_extended = false; // Is extension or extended by other classes
bool m_interfaceClass = false; // Interface class
bool m_needRNG = false; // Need RNG, uses srandom/randomize
@ -2307,6 +2311,8 @@ public:
// Return true if this class is an extension of base class (SLOW)
// Accepts nullptrs
static bool isClassExtendedFrom(const AstClass* refClassp, const AstClass* baseClassp);
void baseOverride(const VBaseOverride& flag) { m_baseOverride = flag; }
VBaseOverride baseOverride() const { return m_baseOverride; }
// Return the lowest class extended from, or this class
AstClass* baseMostClassp();
static bool isCacheableChild(const AstNode* nodep);

2
src/V3AstNodes.cpp
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@ -1539,6 +1539,7 @@ void AstClass::dumpJson(std::ostream& str) const {
dumpJsonBoolFunc(str, isExtended);
dumpJsonBoolFunc(str, isInterfaceClass);
dumpJsonBoolFunc(str, isVirtual);
if (baseOverride().isAny()) dumpJsonStr(str, "baseOverride", baseOverride().ascii());
dumpJsonGen(str);
}
void AstClassExtends::dump(std::ostream& str) const {
@ -2488,6 +2489,7 @@ void AstNodeFTask::dumpJson(std::ostream& str) const {
dumpJsonBoolFunc(str, prototype);
dumpJsonBoolFunc(str, recursive);
dumpJsonBoolFunc(str, taskPublic);
if (baseOverride().isAny()) dumpJsonStr(str, "baseOverride", baseOverride().ascii());
dumpJsonStrFunc(str, cname);
dumpJsonGen(str);
}

1
src/V3ParseImp.h
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@ -103,6 +103,7 @@ struct V3ParseBisonYYSType final {
FileLine* fl;
AstNode* scp; // Symbol table scope for future lookups
int token; // Read token, aka tok
VBaseOverride baseOverride;
union {
V3Number* nump;
string* strp;

65
src/V3WidthCommit.cpp
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@ -27,6 +27,8 @@
#include "V3WidthCommit.h"
#include "V3MemberMap.h"
VL_DEFINE_DEBUG_FUNCTIONS;
//######################################################################
@ -40,6 +42,7 @@ class WidthCommitVisitor final : public VNVisitor {
// STATE
AstNodeModule* m_modp = nullptr;
VMemberMap m_memberMap; // Member names cached for fast lookup
public:
// METHODS
@ -73,7 +76,7 @@ private:
return nodep;
}
void classEncapCheck(AstNode* nodep, AstNode* defp, AstClass* defClassp) {
// Call on non-local class to check local/protected status and complain
// Check local/protected status and complain
bool local = false;
bool prot = false;
if (const auto varp = VN_CAST(defp, Var)) {
@ -110,10 +113,23 @@ private:
// VISITORS
void visit(AstNodeModule* nodep) override {
VL_RESTORER(m_modp);
{
m_modp = nodep;
iterateChildren(nodep);
editDType(nodep);
m_modp = nodep;
iterateChildren(nodep);
editDType(nodep);
if (AstClass* const classp = VN_CAST(nodep, Class)) {
for (AstClassExtends* extendsp = classp->extendsp(); extendsp;
extendsp = extendsp->classp()->extendsp()) {
const AstClass* const ebasep = extendsp->classp();
if (ebasep->baseOverride().isFinal()) {
extendsp->v3error("Class " << nodep->prettyNameQ()
<< " is being extended from class marked ':final'"
" (IEEE 1800-2023 8.20)\n"
<< extendsp->warnContextPrimary() << "\n"
<< ebasep->warnOther()
<< "... Location of ':final' class being extended\n"
<< ebasep->warnContextSecondary());
}
}
}
}
void visit(AstConst* nodep) override {
@ -177,6 +193,45 @@ private:
nodep->v3error(
"Illegal to have 'pure virtual' in non-virtual class (IEEE 1800-2023 8.21)");
}
bool extended = false;
if (const AstClass* const classp = VN_CAST(m_modp, Class)) {
for (AstClassExtends* extendsp = classp->extendsp(); extendsp;
extendsp = extendsp->classp()->extendsp()) {
const AstClass* const eclassp = extendsp->classp();
if (AstNodeFTask* const fbasep
= VN_CAST(m_memberMap.findMember(eclassp, nodep->name()), NodeFTask)) {
if (fbasep != nodep) {
extended = true;
if (nodep->baseOverride().isInitial()) {
nodep->v3error("Member "
<< nodep->prettyNameQ()
<< " is marked ':initial' but is being extended"
" (IEEE 1800-2023 8.20)\n"
<< nodep->warnContextPrimary() << "\n"
<< fbasep->warnOther()
<< "... Location of declaration being extended\n"
<< fbasep->warnContextSecondary());
}
if (fbasep->baseOverride().isFinal()) {
nodep->v3error(
"Member "
<< nodep->prettyNameQ()
<< " is being extended from member marked ':final'"
" (IEEE 1800-2023 8.20)\n"
<< nodep->warnContextPrimary() << "\n"
<< fbasep->warnOther()
<< "... Location of ':final' declaration being extended\n"
<< fbasep->warnContextSecondary());
}
}
}
}
}
if (!extended && nodep->baseOverride().isExtends()) {
nodep->v3error("Member " << nodep->prettyNameQ()
<< " marked ':extends' but no base class function is"
" being extend (IEEE 1800-2023 8.20)");
}
}
void visit(AstNodeVarRef* nodep) override {
iterateChildren(nodep);

26
src/verilog.y
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@ -4458,6 +4458,7 @@ list_of_argumentsE<nodeExprp>: // IEEE: [list_of_arguments]
task_declaration<nodeFTaskp>: // ==IEEE: task_declaration
yTASK dynamic_override_specifiersE lifetimeE taskId tfGuts yENDTASK endLabelE
{ $$ = $4; $$->addStmtsp($5); SYMP->popScope($$);
$$->baseOverride($2);
$$->lifetime($3);
GRAMMARP->endLabel($<fl>7, $$, $7); }
;
@ -4472,11 +4473,13 @@ task_prototype<nodeFTaskp>: // ==IEEE: task_prototype
function_declaration<nodeFTaskp>: // IEEE: function_declaration + function_body_declaration
yFUNCTION dynamic_override_specifiersE lifetimeE funcId funcIsolateE tfGuts yENDFUNCTION endLabelE
{ $$ = $4; $4->attrIsolateAssign($5); $$->addStmtsp($6);
$$->baseOverride($2);
$$->lifetime($3);
SYMP->popScope($$);
GRAMMARP->endLabel($<fl>8, $$, $8); }
| yFUNCTION dynamic_override_specifiersE lifetimeE funcIdNew funcIsolateE tfNewGuts yENDFUNCTION endLabelE
{ $$ = $4; $4->attrIsolateAssign($5); $$->addStmtsp($6);
$$->baseOverride($2);
$$->lifetime($3);
SYMP->popScope($$);
GRAMMARP->endLabel($<fl>8, $$, $8); }
@ -7011,6 +7014,7 @@ classFront<classp>: // IEEE: part of class_declaration
// // IEEE 1800-2023: lifetimeE replaced with final_specifierE
classVirtualE yCLASS final_specifierE lifetimeE idAny/*class_identifier*/
{ $$ = new AstClass{$2, *$5};
$$->baseOverride($3);
$$->isVirtual($1);
SYMP->pushNew($<classp>$);
v3Global.setHasClasses(); }
@ -7223,20 +7227,22 @@ class_method<nodep>: // ==IEEE: class_method
{ $$ = $3; $2.applyToNodes($3); $3->isExternProto(true); }
;
dynamic_override_specifiersE: // IEEE: dynamic_override_specifiers or empty
/* empty */ { /* UNSUP-2023-ignored */ }
dynamic_override_specifiersE<baseOverride>: // IEEE: dynamic_override_specifiers or empty
/* empty */ { $$ = VBaseOverride{}; }
// // IEEE: Expanded [ initial_or_extends_specifier ] [ final_specifier ]
// // Note lifetime used by members is instead under memberQual
| ':' yINITIAL { /* UNSUP-2023-ignored */ }
| ':' yEXTENDS { /* UNSUP-2023-ignored */ }
| ':' yINITIAL ':' yFINAL { /* UNSUP-2023-ignored */ }
| ':' yEXTENDS ':' yFINAL { /* UNSUP-2023-ignored */ }
| ':' yFINAL { /* UNSUP-2023-ignored */ }
| ':' yINITIAL { $$ = VBaseOverride{VBaseOverride::Initial{}}; }
| ':' yEXTENDS { $$ = VBaseOverride{VBaseOverride::Extends{}}; }
| ':' yINITIAL ':' yFINAL { $$ = VBaseOverride{VBaseOverride::Initial{}};
$$.combine(VBaseOverride{VBaseOverride::Final{}}); }
| ':' yEXTENDS ':' yFINAL { $$ = VBaseOverride{VBaseOverride::Extends{}};
$$.combine(VBaseOverride{VBaseOverride::Final{}}); }
| ':' yFINAL { $$ = VBaseOverride{VBaseOverride::Final{}}; }
;
final_specifierE: // ==IEEE: final_specifier (similar to dynamic_override_specifiers)
/* empty */ { }
| ':' yFINAL { /* UNSUP-2023-ignored */ }
final_specifierE<baseOverride>: // ==IEEE: final_specifier (similar to dynamic_override_specifiers)
/* empty */ { $$ = VBaseOverride{}; }
| ':' yFINAL { $$ = VBaseOverride{VBaseOverride::Final{}}; }
;
// IEEE: class_constructor_prototype

21
test_regress/t/t_class_override.pl Executable file
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@ -0,0 +1,21 @@
#!/usr/bin/env perl
if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
# DESCRIPTION: Verilator: Verilog Test driver/expect definition
#
# Copyright 2020 by Wilson Snyder. This program is free software; you
# can redistribute it and/or modify it under the terms of either the GNU
# Lesser General Public License Version 3 or the Perl Artistic License
# Version 2.0.
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
scenarios(simulator => 1);
compile(
);
execute(
check_finished => 1,
);
ok(1);
1;

113
test_regress/t/t_class_override.v Normal file
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@ -0,0 +1,113 @@
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2024 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
// Function names correspond to how the function is declared in the base class,
// then the extend class, with letters:
// Does-not-exist(x), Nothing(n), :initial(i), :extends(e), :final(f)
class Base;
// _X = non-existant
// _n = None
function int get_n; return 1; endfunction
function int get_n_n; return 1; endfunction
function int get_n_e; return 1; endfunction
function int get_n_ef; return 1; endfunction
function int get_n_i; return 1; endfunction
function int get_n_if; return 1; endfunction
function int get_n_f; return 1; endfunction
// _e = :extends
// function :extends int get_e; return 1; endfunction // Bad
// _ef = :extends :final
// function :extends :final int get_ef; return 1; endfunction // Bad
// _i = :initial
function :initial int get_i; return 1; endfunction
function :initial int get_i_n; return 1; endfunction
function :initial int get_i_e; return 1; endfunction
function :initial int get_i_ef; return 1; endfunction
function :initial int get_i_i; return 1; endfunction
function :initial int get_i_if; return 1; endfunction
function :initial int get_i_f; return 1; endfunction
// _if = :initial :final
function :initial :final int get_if; return 1; endfunction
function :initial :final int get_if_n; return 1; endfunction
function :initial :final int get_if_e; return 1; endfunction
function :initial :final int get_if_ef; return 1; endfunction
function :initial :final int get_if_i; return 1; endfunction
function :initial :final int get_if_if; return 1; endfunction
function :initial :final int get_if_f; return 1; endfunction
// _f = :final
function :final int get_f; return 1; endfunction
function :final int get_f_n; return 1; endfunction
function :final int get_f_e; return 1; endfunction
function :final int get_f_ef; return 1; endfunction
function :final int get_f_i; return 1; endfunction
function :final int get_f_if; return 1; endfunction
function :final int get_f_f; return 1; endfunction
endclass
class Cls extends Base;
// _X = non-existant
function int get_x_n; return 1; endfunction
// function :extends int get_x_e; return 1; endfunction // Bad
// function :extends :final int get_x_ef; return 1; endfunction // Bad
function :initial int get_x_i; return 1; endfunction
function :initial :final int get_x_if; return 1; endfunction
function :final int get_x_f; return 1; endfunction
// _n = None
function int get_n_n; return 1; endfunction
function :extends int get_n_e; return 1; endfunction
function :extends :final int get_n_ef; return 1; endfunction
// function :initial int get_n_i; return 1; endfunction // Bad
// function :initial :final int get_n_if; return 1; endfunction // Bad
function :final int get_n_f; return 1; endfunction
// _e = :extends
// _ef = :extends :final
// _i = :initial
function int get_i_n; return 1; endfunction
function :extends int get_i_e; return 1; endfunction
function :extends :final int get_i_ef; return 1; endfunction
// function :initial int get_i_i; return 1; endfunction // Bad
// function :initial :final int get_i_if; return 1; endfunction // Bad
function :final int get_i_f; return 1; endfunction
// _if = :initial :final
// function int get_if_n; return 1; endfunction // Bad
// function :extends int get_if_e; return 1; endfunction // Bad
// function :extends :final int get_if_ef; return 1; endfunction // Bad
// function :initial int get_if_i; return 1; endfunction // Bad
// function :initial :final int get_if_if; return 1; endfunction // Bad
// function :final int get_if_f; return 1; endfunction // Bad
// _f = :final
// function int get_f_n; return 1; endfunction // Bad
// function :extends int get_f_e; return 1; endfunction // Bad
// function :extends :final int get_f_ef; return 1; endfunction // Bad
// function :initial int get_f_i; return 1; endfunction // Bad
// function :initial :final int get_f_if; return 1; endfunction // Bad
// function :final int get_f_f; return 1; endfunction // Bad
endclass
class CBase;
endclass
class CClsN extends CBase;
endclass
class :final CClsF extends CBase;
endclass
module t (/*AUTOARG*/);
initial begin
Cls c;
CClsF cc;
if (c != null) $stop;
c = new;
cc = new;
$write("*-* All Finished *-*\n");
$finish;
end
endmodule

164
test_regress/t/t_class_override_bad.out Normal file
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@ -0,0 +1,164 @@
%Error: t/t_class_override_bad.v:22:26: Member 'get_e' marked ':extends' but no base class function is being extend (IEEE 1800-2023 8.20)
: ... note: In instance 't'
22 | function :extends int get_e; return 1; endfunction
| ^~~~~
%Error: t/t_class_override_bad.v:24:33: Member 'get_ef' marked ':extends' but no base class function is being extend (IEEE 1800-2023 8.20)
: ... note: In instance 't'
24 | function :extends :final int get_ef; return 1; endfunction
| ^~~~~~
%Error: t/t_class_override_bad.v:55:26: Member 'get_x_e' marked ':extends' but no base class function is being extend (IEEE 1800-2023 8.20)
: ... note: In instance 't'
55 | function :extends int get_x_e; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:56:33: Member 'get_x_ef' marked ':extends' but no base class function is being extend (IEEE 1800-2023 8.20)
: ... note: In instance 't'
56 | function :extends :final int get_x_ef; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:64:26: Member 'get_n_i' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
64 | function :initial int get_n_i; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:18:17: ... Location of declaration being extended
18 | function int get_n_i; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:65:33: Member 'get_n_if' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
65 | function :initial :final int get_n_if; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:19:17: ... Location of declaration being extended
19 | function int get_n_if; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:73:26: Member 'get_i_i' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
73 | function :initial int get_i_i; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:30:26: ... Location of declaration being extended
30 | function :initial int get_i_i; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:74:33: Member 'get_i_if' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
74 | function :initial :final int get_i_if; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:31:26: ... Location of declaration being extended
31 | function :initial int get_i_if; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:77:17: Member 'get_if_n' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
77 | function int get_if_n; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:35:33: ... Location of ':final' declaration being extended
35 | function :initial :final int get_if_n; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:78:26: Member 'get_if_e' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
78 | function :extends int get_if_e; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:36:33: ... Location of ':final' declaration being extended
36 | function :initial :final int get_if_e; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:79:33: Member 'get_if_ef' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
79 | function :extends :final int get_if_ef; return 1; endfunction
| ^~~~~~~~~
t/t_class_override_bad.v:37:33: ... Location of ':final' declaration being extended
37 | function :initial :final int get_if_ef; return 1; endfunction
| ^~~~~~~~~
%Error: t/t_class_override_bad.v:80:26: Member 'get_if_i' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
80 | function :initial int get_if_i; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:38:33: ... Location of declaration being extended
38 | function :initial :final int get_if_i; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:80:26: Member 'get_if_i' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
80 | function :initial int get_if_i; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:38:33: ... Location of ':final' declaration being extended
38 | function :initial :final int get_if_i; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:81:33: Member 'get_if_if' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
81 | function :initial :final int get_if_if; return 1; endfunction
| ^~~~~~~~~
t/t_class_override_bad.v:39:33: ... Location of declaration being extended
39 | function :initial :final int get_if_if; return 1; endfunction
| ^~~~~~~~~
%Error: t/t_class_override_bad.v:81:33: Member 'get_if_if' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
81 | function :initial :final int get_if_if; return 1; endfunction
| ^~~~~~~~~
t/t_class_override_bad.v:39:33: ... Location of ':final' declaration being extended
39 | function :initial :final int get_if_if; return 1; endfunction
| ^~~~~~~~~
%Error: t/t_class_override_bad.v:82:24: Member 'get_if_f' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
82 | function :final int get_if_f; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:40:33: ... Location of ':final' declaration being extended
40 | function :initial :final int get_if_f; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:84:17: Member 'get_f_n' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
84 | function int get_f_n; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:43:24: ... Location of ':final' declaration being extended
43 | function :final int get_f_n; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:85:26: Member 'get_f_e' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
85 | function :extends int get_f_e; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:44:24: ... Location of ':final' declaration being extended
44 | function :final int get_f_e; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:86:33: Member 'get_f_ef' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
86 | function :extends :final int get_f_ef; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:45:24: ... Location of ':final' declaration being extended
45 | function :final int get_f_ef; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:87:26: Member 'get_f_i' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
87 | function :initial int get_f_i; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:46:24: ... Location of declaration being extended
46 | function :final int get_f_i; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:87:26: Member 'get_f_i' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
87 | function :initial int get_f_i; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:46:24: ... Location of ':final' declaration being extended
46 | function :final int get_f_i; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:88:33: Member 'get_f_if' is marked ':initial' but is being extended (IEEE 1800-2023 8.20)
: ... note: In instance 't'
88 | function :initial :final int get_f_if; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:47:24: ... Location of declaration being extended
47 | function :final int get_f_if; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:88:33: Member 'get_f_if' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
88 | function :initial :final int get_f_if; return 1; endfunction
| ^~~~~~~~
t/t_class_override_bad.v:47:24: ... Location of ':final' declaration being extended
47 | function :final int get_f_if; return 1; endfunction
| ^~~~~~~~
%Error: t/t_class_override_bad.v:89:24: Member 'get_f_f' is being extended from member marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
89 | function :final int get_f_f; return 1; endfunction
| ^~~~~~~
t/t_class_override_bad.v:48:24: ... Location of ':final' declaration being extended
48 | function :final int get_f_f; return 1; endfunction
| ^~~~~~~
%Error: t/t_class_override_bad.v:101:42: Class 'CClsBadExtendsFinal' is being extended from class marked ':final' (IEEE 1800-2023 8.20)
: ... note: In instance 't'
101 | class :final CClsBadExtendsFinal extends CClsF;
| ^~~~~
t/t_class_override_bad.v:98:1: ... Location of ':final' class being extended
98 | class :final CClsF extends CBase;
| ^~~~~
%Error: Exiting due to

19
test_regress/t/t_class_override_bad.pl Executable file
View File

@ -0,0 +1,19 @@
#!/usr/bin/env perl
if (!$::Driver) { use FindBin; exec("$FindBin::Bin/bootstrap.pl", @ARGV, $0); die; }
# DESCRIPTION: Verilator: Verilog Test driver/expect definition
#
# Copyright 2020 by Wilson Snyder. This program is free software; you
# can redistribute it and/or modify it under the terms of either the GNU
# Lesser General Public License Version 3 or the Perl Artistic License
# Version 2.0.
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
scenarios(linter => 1);
lint(
fails => 1,
expect_filename => $Self->{golden_filename},
);
ok(1);
1;

116
test_regress/t/t_class_override_bad.v Normal file
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@ -0,0 +1,116 @@
// DESCRIPTION: Verilator: Verilog Test module
//
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2024 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0
// Function names correspond to how the function is declared in the base class,
// then the extend class, with letters:
// Does-not-exist(x), Nothing(n), :initial(i), :extends(e), :final(f)
class Base;
// _X = non-existant
// _n = None
function int get_n; return 1; endfunction
function int get_n_n; return 1; endfunction
function int get_n_e; return 1; endfunction
function int get_n_ef; return 1; endfunction
function int get_n_i; return 1; endfunction
function int get_n_if; return 1; endfunction
function int get_n_f; return 1; endfunction
// _e = :extends
function :extends int get_e; return 1; endfunction // Bad
// _ef = :extends :final
function :extends :final int get_ef; return 1; endfunction // Bad
// _i = :initial
function :initial int get_i; return 1; endfunction
function :initial int get_i_n; return 1; endfunction
function :initial int get_i_e; return 1; endfunction
function :initial int get_i_ef; return 1; endfunction
function :initial int get_i_i; return 1; endfunction
function :initial int get_i_if; return 1; endfunction
function :initial int get_i_f; return 1; endfunction
// _if = :initial :final
function :initial :final int get_if; return 1; endfunction
function :initial :final int get_if_n; return 1; endfunction
function :initial :final int get_if_e; return 1; endfunction
function :initial :final int get_if_ef; return 1; endfunction
function :initial :final int get_if_i; return 1; endfunction
function :initial :final int get_if_if; return 1; endfunction
function :initial :final int get_if_f; return 1; endfunction
// _f = :final
function :final int get_f; return 1; endfunction
function :final int get_f_n; return 1; endfunction
function :final int get_f_e; return 1; endfunction
function :final int get_f_ef; return 1; endfunction
function :final int get_f_i; return 1; endfunction
function :final int get_f_if; return 1; endfunction
function :final int get_f_f; return 1; endfunction
endclass
class Cls extends Base;
// _X = non-existant
function int get_x_n; return 1; endfunction
function :extends int get_x_e; return 1; endfunction // Bad
function :extends :final int get_x_ef; return 1; endfunction // Bad
function :initial int get_x_i; return 1; endfunction
function :initial :final int get_x_if; return 1; endfunction
function :final int get_x_f; return 1; endfunction
// _n = None
function int get_n_n; return 1; endfunction
function :extends int get_n_e; return 1; endfunction
function :extends :final int get_n_ef; return 1; endfunction
function :initial int get_n_i; return 1; endfunction // Bad
function :initial :final int get_n_if; return 1; endfunction // Bad
function :final int get_n_f; return 1; endfunction
// _e = :extends
// _ef = :extends :final
// _i = :initial
function int get_i_n; return 1; endfunction
function :extends int get_i_e; return 1; endfunction
function :extends :final int get_i_ef; return 1; endfunction
function :initial int get_i_i; return 1; endfunction // Bad
function :initial :final int get_i_if; return 1; endfunction // Bad
function :final int get_i_f; return 1; endfunction
// _if = :initial :final
function int get_if_n; return 1; endfunction // Bad
function :extends int get_if_e; return 1; endfunction // Bad
function :extends :final int get_if_ef; return 1; endfunction // Bad
function :initial int get_if_i; return 1; endfunction // Bad
function :initial :final int get_if_if; return 1; endfunction // Bad
function :final int get_if_f; return 1; endfunction // Bad
// _f = :final
function int get_f_n; return 1; endfunction // Bad
function :extends int get_f_e; return 1; endfunction // Bad
function :extends :final int get_f_ef; return 1; endfunction // Bad
function :initial int get_f_i; return 1; endfunction // Bad
function :initial :final int get_f_if; return 1; endfunction // Bad
function :final int get_f_f; return 1; endfunction // Bad
endclass
class CBase;
endclass
class CClsN extends CBase;
endclass
class :final CClsF extends CBase;
endclass
class :final CClsBadExtendsFinal extends CClsF;
endclass
module t (/*AUTOARG*/);
initial begin
Cls c;
CClsF cc;
if (c != null) $stop;
c = new;
cc = new;
$write("*-* All Finished *-*\n");
$finish;
end
endmodule