Testing: Add --enable-asan configure option to compile with AddressSanitizer (#6404)

src/V3Global.cpp

@@ -29,6 +29,21 @@
 
 VL_DEFINE_DEBUG_FUNCTIONS;
 
+//######################################################################
+// AddressSanitizer default options
+
+#ifdef VL_ASAN
+extern "C" const char* __asan_default_options() {
+    // See https://github.com/google/sanitizers/wiki/SanitizerCommonFlags
+    // or 'env ASAN_OPTIONS=help=1 ./verilator_bin'
+    return ""
+#ifndef VL_LEAK_CHECKS
+           ":detect_leaks=0"
+#endif
+        ;
+}
+#endif
+
 //######################################################################
 // V3Global
 

src/V3Options.cpp

@@ -817,6 +817,8 @@ string V3Options::getSupported(const string& var) {
         // cppcheck-suppress knownConditionTrueFalse
     } else if (var == "SYSTEMC" && systemCFound()) {
         return "1";
+    } else if (var == "ASAN" && builtWithAsan()) {
+        return "1";
     } else {
         return "";
     }
@@ -843,6 +845,14 @@ bool V3Options::coroutineSupport() {
 #endif
 }
 
+bool V3Options::builtWithAsan() {
+#ifdef HAVE_ASAN
+    return true;
+#else
+    return false;
+#endif
+}
+
 //######################################################################
 // V3 Options notification methods
 

src/V3Options.h

@@ -821,6 +821,7 @@ public:
     static bool systemCSystemWide();
     static bool systemCFound();  // SystemC installed, or environment points to it
     static bool coroutineSupport();  // Compiler supports coroutines
+    static bool builtWithAsan();  // Compiler built with AddressSanitizer
 
     // METHODS (file utilities using these options)
     string fileExists(const string& filename);

src/config_package.h.in

@@ -44,6 +44,9 @@ PACKAGE_VERSION_STRING_CHAR
 // Define if compiled with tcmalloc
 #undef HAVE_TCMALLOC
 
+// Define if compiled with AddressSanitizer
+#undef HAVE_ASAN
+
 //**********************************************************************
 //**** This file sometimes gets truncated, so check in consumers
 #define HAVE_CONFIG_PACKAGE