[runtime] Fix detection of construct frames in stack traces.

This removes the heuristic from {JSStackFrame::IsConstructor} that tried
to infer whether a frame was called as a constructor or not from the
receiver value. We are now carrying along the appropriate bit derived
from the frame type instead.

R=jgruber@chromium.org
TEST=message/regress/regress-5727
BUG=v8:5727

Change-Id: I0e2f1d0f95485c84c4ebcd3cbfe0123c6afd2e01
Reviewed-on: https://chromium-review.googlesource.com/500313
Commit-Queue: Michael Starzinger <mstarzinger@chromium.org>
Reviewed-by: Jakob Gruber <jgruber@chromium.org>
Cr-Commit-Position: refs/heads/master@{#45972}

src/isolate.cc

@@ -518,18 +518,18 @@ Handle<Object> Isolate::CaptureSimpleStackTrace(Handle<JSReceiver> error_object,
           Handle<AbstractCode> abstract_code = summ.abstract_code();
           const int offset = frames[i].code_offset();
 
-          bool force_constructor = false;
+          bool is_constructor = frames[i].is_constructor();
           if (frame->type() == StackFrame::BUILTIN) {
             // Help CallSite::IsConstructor correctly detect hand-written
             // construct stubs.
             if (Code::cast(*abstract_code)->is_construct_stub()) {
-              force_constructor = true;
+              is_constructor = true;
             }
           }
 
           int flags = 0;
           if (helper.IsStrictFrame(*fun)) flags |= FrameArray::kIsStrict;
-          if (force_constructor) flags |= FrameArray::kForceConstructor;
+          if (is_constructor) flags |= FrameArray::kIsConstructor;
 
           elements = FrameArray::AppendJSFrame(
               elements, TheHoleToUndefined(this, recv), fun, abstract_code,
@@ -551,7 +551,7 @@ Handle<Object> Isolate::CaptureSimpleStackTrace(Handle<JSReceiver> error_object,
 
         int flags = 0;
         if (helper.IsStrictFrame(*fun)) flags |= FrameArray::kIsStrict;
-        if (exit_frame->IsConstructor()) flags |= FrameArray::kForceConstructor;
+        if (exit_frame->IsConstructor()) flags |= FrameArray::kIsConstructor;
 
         elements = FrameArray::AppendJSFrame(elements, recv, fun,
                                              Handle<AbstractCode>::cast(code),

src/messages.cc

@@ -302,7 +302,7 @@ void JSStackFrame::FromFrameArray(Isolate* isolate, Handle<FrameArray> array,
   offset_ = array->Offset(frame_ix)->value();
 
   const int flags = array->Flags(frame_ix)->value();
-  force_constructor_ = (flags & FrameArray::kForceConstructor) != 0;
+  is_constructor_ = (flags & FrameArray::kIsConstructor) != 0;
   is_strict_ = (flags & FrameArray::kIsStrict) != 0;
 }
 
@@ -316,7 +316,7 @@ JSStackFrame::JSStackFrame(Isolate* isolate, Handle<Object> receiver,
       function_(function),
       code_(code),
       offset_(offset),
-      force_constructor_(false),
+      is_constructor_(false),
       is_strict_(false) {}
 
 Handle<Object> JSStackFrame::GetFunction() const {
@@ -458,15 +458,6 @@ bool JSStackFrame::IsToplevel() {
   return receiver_->IsJSGlobalProxy() || receiver_->IsNullOrUndefined(isolate_);
 }
 
-bool JSStackFrame::IsConstructor() {
-  if (force_constructor_) return true;
-  if (!receiver_->IsJSObject()) return false;
-  Handle<Object> constructor =
-      JSReceiver::GetDataProperty(Handle<JSObject>::cast(receiver_),
-                                  isolate_->factory()->constructor_string());
-  return constructor.is_identical_to(function_);
-}
-
 namespace {
 
 bool IsNonEmptyString(Handle<Object> object) {

src/messages.h

@@ -106,7 +106,7 @@ class JSStackFrame : public StackFrameBase {
 
   bool IsNative() override;
   bool IsToplevel() override;
-  bool IsConstructor() override;
+  bool IsConstructor() override { return is_constructor_; }
   bool IsStrict() const override { return is_strict_; }
 
   MaybeHandle<String> ToString() override;
@@ -123,7 +123,7 @@ class JSStackFrame : public StackFrameBase {
   Handle<AbstractCode> code_;
   int offset_;
 
-  bool force_constructor_;
+  bool is_constructor_;
   bool is_strict_;
 
   friend class FrameArrayIterator;

src/objects/frame-array.h

@@ -48,7 +48,7 @@ class FrameArray : public FixedArray {
     kIsWasmInterpretedFrame = 1 << 1,
     kIsAsmJsWasmFrame = 1 << 2,
     kIsStrict = 1 << 3,
-    kForceConstructor = 1 << 4,
+    kIsConstructor = 1 << 4,
     kAsmJsAtNumberConversion = 1 << 5
   };
 

test/message/regress/regress-5727.js

@@ -0,0 +1,11 @@
+// Copyright 2017 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.
+
+function Foo(do_throw) {
+  if (do_throw) throw new Error("get me outta here");
+}
+var foo = new Foo(false);
+(function caller() {
+  Foo.call(foo, true);
+})();

test/message/regress/regress-5727.out

@@ -0,0 +1,11 @@
+# Copyright 2017 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.
+
+*%(basename)s:6: Error: get me outta here
+  if (do_throw) throw new Error("get me outta here");
+                ^
+Error: get me outta here
+    at Foo (*%(basename)s:6:23)
+    at caller (*%(basename)s:10:7)
+    at *%(basename)s:11:3

test/mjsunit/es8/async-await-species.js

@@ -46,7 +46,8 @@ function getStack(error) {
     filter(function(line) {
         return /^\s*at @?[a-zA-Z0-9_]/.test(line);
     }).
-    map(line => line.replace(/^\s*at (@?[a-zA-Z0-9_\.\[\]]+)(.*)/, "$1"));
+    map(line =>
+        line.replace(/^\s*at (@?(?:new )?[a-zA-Z0-9_\.\[\]]+)(.*)/, "$1"));
 
   // remove `Promise.then()` invocation by assertEqualsAsync()
   if (stack[2] === "assertEqualsAsync") return [];
@@ -96,6 +97,6 @@ assertEqualsAsync(
     }),
     "should call Promise[@@Species] after non-internal Then");
 assertEquals([
-  "@@Species: [@testThenOnReturnedPromise > Promise.then > FakePromise]",
+  "@@Species: [@testThenOnReturnedPromise > Promise.then > new FakePromise]",
   "Then: foo"
 ], log);