Fix leak check compile and run, bug521.

src/V3Error.cpp

@@ -308,7 +308,7 @@ void FileLine::deleteAllRemaining() {
 	// Eventually the list will be empty and terminate the loop.
     }
     fileLineLeakChecks.clear();
-    FileLineSingleton::clear();
+    singleton().clear();
 #endif
 }
 

src/V3Global.h

@@ -61,9 +61,10 @@ public:
 	m_needHInlines = false;
 	m_needHeavy = false;
 	m_dpi = false;
-	m_rootp = makeNetlist();
+	m_rootp = NULL;  // created by makeInitNetlist() so static constructors run first
     }
     AstNetlist* makeNetlist();
+    void boot() { UASSERT(!m_rootp,"call once"); m_rootp = makeNetlist(); }
     void clear();
     // ACCESSORS (general)
     AstNetlist* rootp() const { return m_rootp; }

src/Verilator.cpp

@@ -616,6 +616,9 @@ int main(int argc, char** argv, char** env) {
     time(&randseed);
     srand( (int) randseed);
 
+    // Post-constructor initialization of netlists
+    v3Global.boot();
+
     // Preprocessor
     // Before command parsing so we can handle -Ds on command line.
     V3PreShell::boot(env);