Correct issues found by AddressSanitizer.

dmd2/identifier.c

@@ -32,12 +32,20 @@ hash_t Identifier::hashCode()
 
 bool Identifier::equals(RootObject *o)
 {
+#if IN_LLVM // ASan
+    return this == o || strncmp(string,o->toChars(),len+1) == 0;
+#else
     return this == o || memcmp(string,o->toChars(),len+1) == 0;
+#endif
 }
 
 int Identifier::compare(RootObject *o)
 {
+#if IN_LLVM // ASan
+    return strncmp(string, o->toChars(), len + 1);
+#else
     return memcmp(string, o->toChars(), len + 1);
+#endif
 }
 
 char *Identifier::toChars()
@@ -60,12 +68,21 @@ const char *Identifier::toHChars2()
     {   p = toChars();
         if (*p == '_')
         {
+#if IN_LLVM // ASan
+            if (strncmp(p, "_staticCtor", 11) == 0)
+                p = "static this";
+            else if (strncmp(p, "_staticDtor", 11) == 0)
+                p = "static ~this";
+            else if (strncmp(p, "__invariant", 11) == 0)
+                p = "invariant";
+#else
             if (memcmp(p, "_staticCtor", 11) == 0)
                 p = "static this";
             else if (memcmp(p, "_staticDtor", 11) == 0)
                 p = "static ~this";
             else if (memcmp(p, "__invariant", 11) == 0)
                 p = "invariant";
+#endif
         }
     }
 

dmd2/mangle.c

@@ -311,7 +311,11 @@ const char *ClassDeclaration::mangle(bool isv)
         this == object     ||
         this == Type::typeinfoclass  ||
         this == Module::moduleinfo ||
+#if IN_LLVM // ASan
+        strncmp(ident->toChars(), "TypeInfo_", 9) == 0
+#else
         memcmp(ident->toChars(), "TypeInfo_", 9) == 0
+#endif
        )
         parent = NULL;
 

dmd2/root/rmem.c

@@ -138,6 +138,14 @@ void Mem::addroots(char* pStart, char* pEnd)
 
 /* =================================================== */
 
+#if defined(__has_feature)
+#if !__has_feature(address_sanitizer)
+#define DEFINE_NEW_DELETE
+#endif
+#endif
+
+#if defined(DEFINE_NEW_DELETE)
+
 #if IN_DMD
 
 /* Allocate, but never release
@@ -209,3 +217,6 @@ void operator delete(void *p)
 }
 
 #endif
+
+#endif
+

dmd2/scope.c

@@ -278,9 +278,13 @@ unsigned *Scope::saveFieldInit()
     {
         size_t dim = fieldinit_dim;
         fi = new unsigned[dim];
+#if IN_LLVM // ASan
+        memcpy(fi, fieldinit, sizeof(*fi) * dim);
+#else
         fi[0] = dim;
         for (size_t i = 0; i < dim; i++)
             fi[i] = fieldinit[i];
+#endif
     }
     return fi;
 }