Revision: 9723
Author: [email protected]
Date: Thu Oct 20 05:31:33 2011
Log: Make builtin functions be skipped in stack traces.
Does include exposed builtin functions ("native functions").
Review URL: http://codereview.chromium.org/8345039
http://code.google.com/p/v8/source/detail?r=9723
Added:
/branches/bleeding_edge/test/mjsunit/stack-traces-2.js
Modified:
/branches/bleeding_edge/src/bootstrapper.cc
/branches/bleeding_edge/src/flag-definitions.h
/branches/bleeding_edge/src/messages.js
/branches/bleeding_edge/src/runtime.cc
/branches/bleeding_edge/test/mjsunit/stack-traces.js
=======================================
--- /dev/null
+++ /branches/bleeding_edge/test/mjsunit/stack-traces-2.js Thu Oct 20
05:31:33 2011
@@ -0,0 +1,87 @@
+// Copyright 2011 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+// Flags: --builtins-in-stack-traces
+
+
+// Poisonous object that throws a reference error if attempted converted to
+// a primitive values.
+var thrower = { valueOf: function() { FAIL; },
+ toString: function() { FAIL; } };
+
+// Tests that a native constructor function is included in the
+// stack trace.
+function testTraceNativeConstructor(nativeFunc) {
+ var nativeFuncName = nativeFunc.name;
+ try {
+ new nativeFunc(thrower);
+ assertUnreachable(nativeFuncName);
+ } catch (e) {
+ assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
+ }
+}
+
+// Tests that a native conversion function is included in the
+// stack trace.
+function testTraceNativeConversion(nativeFunc) {
+ var nativeFuncName = nativeFunc.name;
+ try {
+ nativeFunc(thrower);
+ assertUnreachable(nativeFuncName);
+ } catch (e) {
+ assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
+ }
+}
+
+
+function testNotOmittedBuiltin(throwing, included) {
+ try {
+ throwing();
+ assertUnreachable(included);
+ } catch (e) {
+ assertTrue(e.stack.indexOf(included) >= 0, included);
+ }
+}
+
+
+testTraceNativeConversion(String); // Does ToString on argument.
+testTraceNativeConversion(Number); // Does ToNumber on argument.
+testTraceNativeConversion(RegExp); // Does ToString on argument.
+
+testTraceNativeConstructor(String); // Does ToString on argument.
+testTraceNativeConstructor(Number); // Does ToNumber on argument.
+testTraceNativeConstructor(RegExp); // Does ToString on argument.
+testTraceNativeConstructor(Date); // Does ToNumber on argument.
+
+// QuickSort has builtins object as receiver, and is non-native
+// builtin. Should not be omitted with the --builtins-in-stack-traces flag.
+testNotOmittedBuiltin(function(){ [thrower, 2].sort(function (a,b) {
+ (b < a) - (a < b); });
+ }, "QuickSort");
+
+// Not omitted even though ADD from runtime.js is a non-native builtin.
+testNotOmittedBuiltin(function(){ thrower + 2; }, "ADD");
=======================================
--- /branches/bleeding_edge/src/bootstrapper.cc Wed Oct 19 05:04:16 2011
+++ /branches/bleeding_edge/src/bootstrapper.cc Thu Oct 20 05:31:33 2011
@@ -362,6 +362,7 @@
if (is_ecma_native) {
function->shared()->set_instance_class_name(*symbol);
}
+ function->shared()->set_native(true);
return function;
}
=======================================
--- /branches/bleeding_edge/src/flag-definitions.h Thu Oct 20 02:38:24 2011
+++ /branches/bleeding_edge/src/flag-definitions.h Thu Oct 20 05:31:33 2011
@@ -186,6 +186,8 @@
DEFINE_bool(expose_externalize_string, false,
"expose externalize string extension")
DEFINE_int(stack_trace_limit, 10, "number of stack frames to capture")
+DEFINE_bool(builtins_in_stack_traces, false,
+ "show built-in functions in stack traces")
DEFINE_bool(disable_native_files, false, "disable builtin natives files")
// builtins-ia32.cc
=======================================
--- /branches/bleeding_edge/src/messages.js Thu Oct 13 08:55:57 2011
+++ /branches/bleeding_edge/src/messages.js Thu Oct 20 05:31:33 2011
@@ -1126,6 +1126,7 @@
return new f(m);
}
});
+ %SetNativeFlag(f);
}
DefineError(function Error() { });
=======================================
--- /branches/bleeding_edge/src/runtime.cc Thu Oct 20 02:38:24 2011
+++ /branches/bleeding_edge/src/runtime.cc Thu Oct 20 05:31:33 2011
@@ -2116,7 +2116,6 @@
// Since we don't store the source for this we should never
// optimize this.
shared->code()->set_optimizable(false);
-
// Set the code, scope info, formal parameter count,
// and the length of the target function.
target->shared()->set_code(shared->code());
@@ -12924,34 +12923,32 @@
Object* caller,
bool* seen_caller) {
// Only display JS frames.
- if (!raw_frame->is_java_script())
+ if (!raw_frame->is_java_script()) {
return false;
+ }
JavaScriptFrame* frame = JavaScriptFrame::cast(raw_frame);
Object* raw_fun = frame->function();
// Not sure when this can happen but skip it just in case.
- if (!raw_fun->IsJSFunction())
+ if (!raw_fun->IsJSFunction()) {
return false;
+ }
if ((raw_fun == caller) && !(*seen_caller)) {
*seen_caller = true;
return false;
}
// Skip all frames until we've seen the caller.
if (!(*seen_caller)) return false;
- // Also, skip the most obvious builtin calls. We recognize builtins
- // as (1) functions called with the builtins object as the receiver and
- // as (2) functions from native scripts called with undefined as the
- // receiver (direct calls to helper functions in the builtins
- // code). Some builtin calls (such as Number.ADD which is invoked
- // using 'call') are very difficult to recognize so we're leaving
- // them in for now.
- if (frame->receiver()->IsJSBuiltinsObject()) {
- return false;
- }
- JSFunction* fun = JSFunction::cast(raw_fun);
- Object* raw_script = fun->shared()->script();
- if (frame->receiver()->IsUndefined() && raw_script->IsScript()) {
- int script_type = Script::cast(raw_script)->type()->value();
- return script_type != Script::TYPE_NATIVE;
+ // Also, skip non-visible built-in functions and any call with the
builtins
+ // object as receiver, so as to not reveal either the builtins object or
+ // an internal function.
+ // The --builtins-in-stack-traces command line flag allows including
+ // internal call sites in the stack trace for debugging purposes.
+ if (!FLAG_builtins_in_stack_traces) {
+ JSFunction* fun = JSFunction::cast(raw_fun);
+ if (frame->receiver()->IsJSBuiltinsObject() ||
+ (fun->IsBuiltin() && !fun->shared()->native())) {
+ return false;
+ }
}
return true;
}
=======================================
--- /branches/bleeding_edge/test/mjsunit/stack-traces.js Tue Dec 7
03:01:02 2010
+++ /branches/bleeding_edge/test/mjsunit/stack-traces.js Thu Oct 20
05:31:33 2011
@@ -192,6 +192,46 @@
}
assertTrue(threw, "ErrorsDuringFormatting didnt' throw (2)");
}
+
+
+// Poisonous object that throws a reference error if attempted converted to
+// a primitive values.
+var thrower = { valueOf: function() { FAIL; },
+ toString: function() { FAIL; } };
+
+// Tests that a native constructor function is included in the
+// stack trace.
+function testTraceNativeConstructor(nativeFunc) {
+ var nativeFuncName = nativeFunc.name;
+ try {
+ new nativeFunc(thrower);
+ assertUnreachable(nativeFuncName);
+ } catch (e) {
+ assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
+ }
+}
+
+// Tests that a native conversion function is included in the
+// stack trace.
+function testTraceNativeConversion(nativeFunc) {
+ var nativeFuncName = nativeFunc.name;
+ try {
+ nativeFunc(thrower);
+ assertUnreachable(nativeFuncName);
+ } catch (e) {
+ assertTrue(e.stack.indexOf(nativeFuncName) >= 0, nativeFuncName);
+ }
+}
+
+
+function testOmittedBuiltin(throwing, omitted) {
+ try {
+ throwing();
+ assertUnreachable(omitted);
+ } catch (e) {
+ assertTrue(e.stack.indexOf(omitted) < 0, omitted);
+ }
+}
testTrace("testArrayNative", testArrayNative, ["Array.map (native)"]);
@@ -217,3 +257,21 @@
testCallerCensorship();
testUnintendedCallerCensorship();
testErrorsDuringFormatting();
+
+testTraceNativeConversion(String); // Does ToString on argument.
+testTraceNativeConversion(Number); // Does ToNumber on argument.
+testTraceNativeConversion(RegExp); // Does ToString on argument.
+
+testTraceNativeConstructor(String); // Does ToString on argument.
+testTraceNativeConstructor(Number); // Does ToNumber on argument.
+testTraceNativeConstructor(RegExp); // Does ToString on argument.
+testTraceNativeConstructor(Date); // Does ToNumber on argument.
+
+// Omitted because QuickSort has builtins object as receiver, and is
non-native
+// builtin.
+testOmittedBuiltin(function(){ [thrower, 2].sort(function (a,b) {
+ (b < a) - (a < b); });
+ }, "QuickSort");
+
+// Omitted because ADD from runtime.js is non-native builtin.
+testOmittedBuiltin(function(){ thrower + 2; }, "ADD");
--
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