Add additional debug output

Author: drexin

stdlib/public/runtime/BytecodeLayouts.cpp

@@ -1002,6 +1002,14 @@ extern "C" swift::OpaqueValue *
 swift_generic_initWithCopy(swift::OpaqueValue *dest, swift::OpaqueValue *src,
                            const Metadata *metadata) {
   const uint8_t *layoutStr = metadata->getLayoutString();
+
+  size_t refCountBytes = (*(const size_t*)(layoutStr + sizeof(uint64_t))) + sizeof(uint64_t);
+  fprintf(stderr, "==== RefCount: ");
+  for (size_t i = 0; i < refCountBytes; i+=8) {
+    fprintf(stderr, "%016llx ", *(const uint64_t*)(layoutStr + sizeof(uint64_t) + sizeof(size_t) + i));
+  }
+  fprintf(stderr, "\n");
+
   LayoutStringReader1 reader{layoutStr + layoutStringHeaderSize};
   uintptr_t addrOffset = 0;
   handleRefCountsInitWithCopy(metadata, reader, addrOffset, (uint8_t *)dest, (uint8_t *)src);
@@ -1414,8 +1422,9 @@ static void singlePayloadEnumSimpleAssignWithCopy(const Metadata *metadata,
       return;
     } else if (destTagBytes >= xiTagValues) {
       const uint8_t *end = (reader.layoutStr + refCountBytes);
+      auto nestedAddrOffset = addrOffset;
       while (reader.layoutStr < end) {
-        handleSingleRefCountDestroy(metadata, reader, addrOffset, dest);
+        handleSingleRefCountDestroy(metadata, reader, nestedAddrOffset, dest);
       }
     } else {
       reader.skip(refCountBytes);
@@ -1450,8 +1459,9 @@ static void singlePayloadEnumFNAssignWithCopy(const Metadata *metadata,
       return;
     } else if (destTag == 0) {
       const uint8_t *end = (reader.layoutStr + refCountBytes);
+      auto nestedAddrOffset = addrOffset;
       while (reader.layoutStr < end) {
-        handleSingleRefCountDestroy(metadata, reader, addrOffset, dest);
+        handleSingleRefCountDestroy(metadata, reader, nestedAddrOffset, dest);
       }
     } else {
       reader.skip(refCountBytes);
@@ -1486,8 +1496,9 @@ static void singlePayloadEnumFNResolvedAssignWithCopy(const Metadata *metadata,
       return;
     } else if (destTag == 0) {
       const uint8_t *end = (reader.layoutStr + refCountBytes);
+      auto nestedAddrOffset = addrOffset;
       while (reader.layoutStr < end) {
-        handleSingleRefCountDestroy(metadata, reader, addrOffset, dest);
+        handleSingleRefCountDestroy(metadata, reader, nestedAddrOffset, dest);
       }
     } else {
       reader.skip(refCountBytes);
@@ -1547,8 +1558,9 @@ static void singlePayloadEnumGenericAssignWithCopy(const Metadata *metadata,
       return;
     } else if (destTag == 0) {
       const uint8_t *end = (reader.layoutStr + refCountBytes);
+      auto nestedAddrOffset = addrOffset;
       while (reader.layoutStr < end) {
-        handleSingleRefCountDestroy(metadata, reader, addrOffset, dest);
+        handleSingleRefCountDestroy(metadata, reader, nestedAddrOffset, dest);
       }
     } else {
       reader.skip(refCountBytes);