Use a custom Struct for stack trace storage

src/objects-debug.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/objects.h"
 
 #include "src/bootstrapper.h"
 #include "src/disasm.h"
 #include "src/disassembler.h"
 #include "src/field-type.h"
@@ skipping 998 matching lines @@
 
 
 void Script::ScriptVerify() {
   CHECK(IsScript());
   VerifyPointer(source());
   VerifyPointer(name());
   VerifyPointer(wrapper());
   VerifyPointer(line_ends());
 }
 
+void StackTraceFrame::StackTraceFrameVerify() {
+  CHECK(IsStackTraceFrame());
+  VerifyPointer(abstract_code());
+  if (IsWasmFrame()) {
+    VerifyPointer(wasm_object());
+  } else {
+    DCHECK(IsJavaScriptFrame());
+    VerifyPointer(receiver());
+    VerifyPointer(function());
+  }
+}
 
 void NormalizedMapCache::NormalizedMapCacheVerify() {
   FixedArray::cast(this)->FixedArrayVerify();
   if (FLAG_enable_slow_asserts) {
     Isolate* isolate = GetIsolate();
     for (int i = 0; i < length(); i++) {
       Object* e = FixedArray::get(i);
       if (e->IsMap()) {
         Map::cast(e)->DictionaryMapVerify();
       } else {
@@ skipping 305 matching lines @@
 
   // Both are done at the same time.
   CHECK_EQ(new_it.done(), old_it.done());
 }
 
 
 #endif  // DEBUG
 
 }  // namespace internal
 }  // namespace v8