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Reapply "Fix the ScopeIterator reimplementation".

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This reapplies a fixed version of r10076 that also works on arm. Patch set one is r10076 reapplied and patch set 2 contains the new fix.

Review URL: http://codereview.chromium.org/8725001

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10080 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This commit is contained in:
keuchel@chromium.org 2011-11-29 08:43:14 +00:00
parent e26093f3d8
commit b3a2e242db
8 changed files with 649 additions and 104 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
src/ast.h
View File

@ -1140,6 +1140,11 @@ class VariableProxy: public Expression {
public:
VariableProxy(Isolate* isolate, Variable* var);
VariableProxy(Isolate* isolate,
Handle<String> name,
bool is_this,
int position = RelocInfo::kNoPosition);
DECLARE_NODE_TYPE(VariableProxy)
virtual bool IsValidLeftHandSide() {
@ -1170,13 +1175,6 @@ class VariableProxy: public Expression {
bool is_this_;
bool is_trivial_;
int position_;
VariableProxy(Isolate* isolate,
Handle<String> name,
bool is_this,
int position = RelocInfo::kNoPosition);
friend class Scope;
};

12
src/parser.cc
View File

@ -5562,7 +5562,7 @@ static ScriptDataImpl* DoPreParse(UC16CharacterStream* source,
// Preparse, but only collect data that is immediately useful,
// even if the preparser data is only used once.
ScriptDataImpl* ParserApi::PartialPreParse(UC16CharacterStream* source,
ScriptDataImpl* ParserApi::PartialPreParse(Handle<String> source,
v8::Extension* extension,
int flags) {
bool allow_lazy = FLAG_lazy && (extension == NULL);
@ -5573,7 +5573,15 @@ ScriptDataImpl* ParserApi::PartialPreParse(UC16CharacterStream* source,
}
flags |= kAllowLazy;
PartialParserRecorder recorder;
return DoPreParse(source, flags, &recorder);
int source_length = source->length();
if (source->IsExternalTwoByteString()) {
ExternalTwoByteStringUC16CharacterStream stream(
Handle<ExternalTwoByteString>::cast(source), 0, source_length);
return DoPreParse(&stream, flags, &recorder);
} else {
GenericStringUC16CharacterStream stream(source, 0, source_length);
return DoPreParse(&stream, flags, &recorder);
}
}

2
src/parser.h
View File

@ -178,7 +178,7 @@ class ParserApi {
// Preparser that only does preprocessing that makes sense if only used
// immediately after.
static ScriptDataImpl* PartialPreParse(UC16CharacterStream* source,
static ScriptDataImpl* PartialPreParse(Handle<String> source,
v8::Extension* extension,
int flags);
};

16
src/rewriter.cc
View File

@ -236,10 +236,22 @@ bool Rewriter::Rewrite(CompilationInfo* info) {
if (processor.HasStackOverflow()) return false;
if (processor.result_assigned()) {
ASSERT(function->end_position() != RelocInfo::kNoPosition);
Isolate* isolate = info->isolate();
Zone* zone = isolate->zone();
VariableProxy* result_proxy = new(zone) VariableProxy(isolate, result);
body->Add(new(zone) ReturnStatement(result_proxy));
// Set the position of the assignment statement one character past the
// source code, such that it definitely is not in the source code range
// of an immediate inner scope. For example in
// eval('with ({x:1}) x = 1');
// the end position of the function generated for executing the eval code
// coincides with the end of the with scope which is the position of '1'.
int position = function->end_position();
VariableProxy* result_proxy = new(zone) VariableProxy(
isolate, result->name(), false, position);
result_proxy->BindTo(result);
Statement* result_statement = new(zone) ReturnStatement(result_proxy);
result_statement->set_statement_pos(position);
body->Add(result_statement);
}
}

276
src/runtime.cc
View File

@ -11201,27 +11201,83 @@ class ScopeIterator {
inlined_frame_index_(inlined_frame_index),
function_(JSFunction::cast(frame->function())),
context_(Context::cast(frame->context())),
local_done_(false),
at_local_(false) {
nested_scope_chain_(4) {
// Check whether the first scope is actually a local scope.
// If there is a stack slot for .result then this local scope has been
// created for evaluating top level code and it is not a real local scope.
// Checking for the existence of .result seems fragile, but the scope info
// saved with the code object does not otherwise have that information.
int index = function_->shared()->scope_info()->
StackSlotIndex(isolate_->heap()->result_symbol());
if (index >= 0) {
local_done_ = true;
} else if (context_->IsGlobalContext() ||
context_->IsFunctionContext()) {
at_local_ = true;
} else if (context_->closure() != *function_) {
// The context_ is a block or with or catch block from the outer function.
ASSERT(context_->IsWithContext() ||
context_->IsCatchContext() ||
context_->IsBlockContext());
at_local_ = true;
// Catch the case when the debugger stops in an internal function.
Handle<SharedFunctionInfo> shared_info(function_->shared());
Handle<ScopeInfo> scope_info(shared_info->scope_info());
if (shared_info->script() == isolate->heap()->undefined_value()) {
while (context_->closure() == *function_) {
context_ = Handle<Context>(context_->previous(), isolate_);
}
return;
}
// Get the debug info (create it if it does not exist).
if (!isolate->debug()->EnsureDebugInfo(shared_info)) {
// Return if ensuring debug info failed.
return;
}
Handle<DebugInfo> debug_info = Debug::GetDebugInfo(shared_info);
// Find the break point where execution has stopped.
BreakLocationIterator break_location_iterator(debug_info,
ALL_BREAK_LOCATIONS);
break_location_iterator.FindBreakLocationFromAddress(frame->pc());
if (break_location_iterator.IsExit()) {
// We are within the return sequence. At the momemt it is not possible to
// get a source position which is consistent with the current scope chain.
// Thus all nested with, catch and block contexts are skipped and we only
// provide the function scope.
if (scope_info->HasContext()) {
context_ = Handle<Context>(context_->declaration_context(), isolate_);
} else {
while (context_->closure() == *function_) {
context_ = Handle<Context>(context_->previous(), isolate_);
}
}
if (scope_info->Type() != EVAL_SCOPE) nested_scope_chain_.Add(scope_info);
} else {
// Reparse the code and analyze the scopes.
ZoneScope zone_scope(isolate, DELETE_ON_EXIT);
Handle<Script> script(Script::cast(shared_info->script()));
Scope* scope = NULL;
// Check whether we are in global, eval or function code.
Handle<ScopeInfo> scope_info(shared_info->scope_info());
if (scope_info->Type() != FUNCTION_SCOPE) {
// Global or eval code.
CompilationInfo info(script);
if (scope_info->Type() == GLOBAL_SCOPE) {
info.MarkAsGlobal();
} else {
ASSERT(scope_info->Type() == EVAL_SCOPE);
info.MarkAsEval();
info.SetCallingContext(Handle<Context>(function_->context()));
}
if (ParserApi::Parse(&info, kNoParsingFlags) && Scope::Analyze(&info)) {
scope = info.function()->scope();
}
} else {
// Function code
CompilationInfo info(shared_info);
if (ParserApi::Parse(&info, kNoParsingFlags) && Scope::Analyze(&info)) {
scope = info.function()->scope();
}
}
// Retrieve the scope chain for the current position.
if (scope != NULL) {
int source_position = shared_info->code()->SourcePosition(frame_->pc());
scope->GetNestedScopeChain(&nested_scope_chain_, source_position);
} else {
// A failed reparse indicates that the preparser has diverged from the
// parser or that the preparse data given to the initial parse has been
// faulty. We fail in debug mode but in release mode we only provide the
// information we get from the context chain but nothing about
// completely stack allocated scopes or stack allocated locals.
UNREACHABLE();
}
}
}
@ -11230,40 +11286,49 @@ class ScopeIterator {
// Move to the next scope.
void Next() {
// If at a local scope mark the local scope as passed.
if (at_local_) {
at_local_ = false;
local_done_ = true;
// If the current context is not associated with the local scope the
// current context is the next real scope, so don't move to the next
// context in this case.
if (context_->closure() != *function_) {
return;
}
}
// The global scope is always the last in the chain.
if (context_->IsGlobalContext()) {
ScopeType scope_type = Type();
if (scope_type == ScopeTypeGlobal) {
// The global scope is always the last in the chain.
ASSERT(context_->IsGlobalContext());
context_ = Handle<Context>();
return;
}
// Move to the next context.
context_ = Handle<Context>(context_->previous(), isolate_);
// If passing the local scope indicate that the current scope is now the
// local scope.
if (!local_done_ &&
(context_->IsGlobalContext() || context_->IsFunctionContext())) {
at_local_ = true;
if (nested_scope_chain_.is_empty()) {
context_ = Handle<Context>(context_->previous(), isolate_);
} else {
if (nested_scope_chain_.last()->HasContext()) {
ASSERT(context_->previous() != NULL);
context_ = Handle<Context>(context_->previous(), isolate_);
}
nested_scope_chain_.RemoveLast();
}
}
// Return the type of the current scope.
ScopeType Type() {
if (at_local_) {
return ScopeTypeLocal;
if (!nested_scope_chain_.is_empty()) {
Handle<ScopeInfo> scope_info = nested_scope_chain_.last();
switch (scope_info->Type()) {
case FUNCTION_SCOPE:
ASSERT(context_->IsFunctionContext() ||
!scope_info->HasContext());
return ScopeTypeLocal;
case GLOBAL_SCOPE:
ASSERT(context_->IsGlobalContext());
return ScopeTypeGlobal;
case WITH_SCOPE:
ASSERT(context_->IsWithContext());
return ScopeTypeWith;
case CATCH_SCOPE:
ASSERT(context_->IsCatchContext());
return ScopeTypeCatch;
case BLOCK_SCOPE:
ASSERT(!scope_info->HasContext() ||
context_->IsBlockContext());
return ScopeTypeBlock;
case EVAL_SCOPE:
UNREACHABLE();
}
}
if (context_->IsGlobalContext()) {
ASSERT(context_->global()->IsGlobalObject());
@ -11289,6 +11354,7 @@ class ScopeIterator {
return Handle<JSObject>(CurrentContext()->global());
case ScopeIterator::ScopeTypeLocal:
// Materialize the content of the local scope into a JSObject.
ASSERT(nested_scope_chain_.length() == 1);
return MaterializeLocalScope(isolate_, frame_, inlined_frame_index_);
case ScopeIterator::ScopeTypeWith:
// Return the with object.
@ -11305,13 +11371,28 @@ class ScopeIterator {
return Handle<JSObject>();
}
Handle<ScopeInfo> CurrentScopeInfo() {
if (!nested_scope_chain_.is_empty()) {
return nested_scope_chain_.last();
} else if (context_->IsBlockContext()) {
return Handle<ScopeInfo>(ScopeInfo::cast(context_->extension()));
} else if (context_->IsFunctionContext()) {
return Handle<ScopeInfo>(context_->closure()->shared()->scope_info());
}
return Handle<ScopeInfo>::null();
}
// Return the context for this scope. For the local context there might not
// be an actual context.
Handle<Context> CurrentContext() {
if (at_local_ && context_->closure() != *function_) {
if (Type() == ScopeTypeGlobal ||
nested_scope_chain_.is_empty()) {
return context_;
} else if (nested_scope_chain_.last()->HasContext()) {
return context_;
} else {
return Handle<Context>();
}
return context_;
}
#ifdef DEBUG
@ -11373,8 +11454,7 @@ class ScopeIterator {
int inlined_frame_index_;
Handle<JSFunction> function_;
Handle<Context> context_;
bool local_done_;
bool at_local_;
List<Handle<ScopeInfo> > nested_scope_chain_;
DISALLOW_IMPLICIT_CONSTRUCTORS(ScopeIterator);
};
@ -11837,45 +11917,65 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_ClearStepping) {
// Creates a copy of the with context chain. The copy of the context chain is
// is linked to the function context supplied.
static Handle<Context> CopyWithContextChain(Isolate* isolate,
Handle<JSFunction> function,
Handle<Context> current,
Handle<Context> base) {
// At the end of the chain. Return the base context to link to.
if (current->IsFunctionContext() || current->IsGlobalContext()) {
return base;
static Handle<Context> CopyNestedScopeContextChain(Isolate* isolate,
Handle<JSFunction> function,
Handle<Context> base,
JavaScriptFrame* frame,
int inlined_frame_index) {
HandleScope scope(isolate);
List<Handle<ScopeInfo> > scope_chain;
List<Handle<Context> > context_chain;
ScopeIterator it(isolate, frame, inlined_frame_index);
for (; it.Type() != ScopeIterator::ScopeTypeGlobal &&
it.Type() != ScopeIterator::ScopeTypeLocal ; it.Next()) {
ASSERT(!it.Done());
scope_chain.Add(it.CurrentScopeInfo());
context_chain.Add(it.CurrentContext());
}
// Recursively copy the with and catch contexts.
HandleScope scope(isolate);
Handle<Context> previous(current->previous());
Handle<Context> new_previous =
CopyWithContextChain(isolate, function, previous, base);
Handle<Context> new_current;
if (current->IsCatchContext()) {
Handle<String> name(String::cast(current->extension()));
Handle<Object> thrown_object(current->get(Context::THROWN_OBJECT_INDEX));
new_current =
isolate->factory()->NewCatchContext(function,
new_previous,
name,
thrown_object);
} else if (current->IsBlockContext()) {
Handle<ScopeInfo> scope_info(ScopeInfo::cast(current->extension()));
new_current =
isolate->factory()->NewBlockContext(function, new_previous, scope_info);
// Copy context slots.
int num_context_slots = scope_info->ContextLength();
for (int i = Context::MIN_CONTEXT_SLOTS; i < num_context_slots; ++i) {
new_current->set(i, current->get(i));
// At the end of the chain. Return the base context to link to.
Handle<Context> context = base;
// Iteratively copy and or materialize the nested contexts.
while (!scope_chain.is_empty()) {
Handle<ScopeInfo> scope_info = scope_chain.RemoveLast();
Handle<Context> current = context_chain.RemoveLast();
ASSERT(!(scope_info->HasContext() & current.is_null()));
if (scope_info->Type() == CATCH_SCOPE) {
Handle<String> name(String::cast(current->extension()));
Handle<Object> thrown_object(current->get(Context::THROWN_OBJECT_INDEX));
context =
isolate->factory()->NewCatchContext(function,
context,
name,
thrown_object);
} else if (scope_info->Type() == BLOCK_SCOPE) {
// Materialize the contents of the block scope into a JSObject.
Handle<JSObject> block_scope_object =
MaterializeBlockScope(isolate, current);
if (block_scope_object.is_null()) {
return Handle<Context>::null();
}
// Allocate a new function context for the debug evaluation and set the
// extension object.
Handle<Context> new_context =
isolate->factory()->NewFunctionContext(Context::MIN_CONTEXT_SLOTS,
function);
new_context->set_extension(*block_scope_object);
new_context->set_previous(*context);
context = new_context;
} else {
ASSERT(scope_info->Type() == WITH_SCOPE);
ASSERT(current->IsWithContext());
Handle<JSObject> extension(JSObject::cast(current->extension()));
context =
isolate->factory()->NewWithContext(function, context, extension);
}
} else {
ASSERT(current->IsWithContext());
Handle<JSObject> extension(JSObject::cast(current->extension()));
new_current =
isolate->factory()->NewWithContext(function, new_previous, extension);
}
return scope.CloseAndEscape(new_current);
return scope.CloseAndEscape(context);
}
@ -12010,7 +12110,11 @@ RUNTIME_FUNCTION(MaybeObject*, Runtime_DebugEvaluate) {
if (scope_info->HasContext()) {
function_context = Handle<Context>(frame_context->declaration_context());
}
context = CopyWithContextChain(isolate, go_between, frame_context, context);
context = CopyNestedScopeContextChain(isolate,
go_between,
context,
frame,
inlined_frame_index);
if (additional_context->IsJSObject()) {
Handle<JSObject> extension = Handle<JSObject>::cast(additional_context);

4
src/scopes.cc
View File

@ -661,14 +661,14 @@ Handle<ScopeInfo> Scope::GetScopeInfo() {
void Scope::GetNestedScopeChain(
List<Handle<ScopeInfo> >* chain,
int position) {
chain->Add(Handle<ScopeInfo>(GetScopeInfo()));
if (!is_eval_scope()) chain->Add(Handle<ScopeInfo>(GetScopeInfo()));
for (int i = 0; i < inner_scopes_.length(); i++) {
Scope* scope = inner_scopes_[i];
int beg_pos = scope->start_position();
int end_pos = scope->end_position();
ASSERT(beg_pos >= 0 && end_pos >= 0);
if (beg_pos <= position && position <= end_pos) {
if (beg_pos <= position && position < end_pos) {
scope->GetNestedScopeChain(chain, position);
return;
}

8
test/cctest/test-parsing.cc
View File

@ -349,10 +349,10 @@ TEST(Regress928) {
"try { } catch (e) { var foo = function () { /* first */ } }"
"var bar = function () { /* second */ }";
i::Utf8ToUC16CharacterStream stream(reinterpret_cast<const i::byte*>(program),
static_cast<unsigned>(strlen(program)));
i::ScriptDataImpl* data =
i::ParserApi::PartialPreParse(&stream, NULL, false);
v8::HandleScope handles;
i::Handle<i::String> source(
FACTORY->NewStringFromAscii(i::CStrVector(program)));
i::ScriptDataImpl* data = i::ParserApi::PartialPreParse(source, NULL, false);
CHECK(!data->HasError());
data->Initialize();

423
test/mjsunit/debug-stepout-scope.js Normal file
View File

@ -0,0 +1,423 @@
// 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: --expose-debug-as debug --expose-natives-as=builtins
// Check that the ScopeIterator can properly recreate the scope at
// every point when stepping through functions.
var Debug = debug.Debug;
function listener(event, exec_state, event_data, data) {
if (event == Debug.DebugEvent.Break) {
// Access scope details.
var scope_count = exec_state.frame().scopeCount();
for (var i = 0; i < scope_count; i++) {
var scope = exec_state.frame().scope(i);
// assertTrue(scope.isScope());
scope.scopeType();
scope.scopeObject();
}
// Do steps until we reach the global scope again.
if (true) {
exec_state.prepareStep(Debug.StepAction.StepInMin, 1);
}
}
}
Debug.setListener(listener);
function test1() {
debugger;
with ({x:1}) {
x = 2;
}
}
test1();
function test2() {
if (true) {
with ({}) {
debugger;
}
} else {
with ({}) {
return 10;
}
}
}
test2();
function test3() {
if (true) {
debugger;
} else {
with ({}) {
return 10;
}
}
}
test3();
function test4() {
debugger;
with ({x:1}) x = 1
}
test4();
function test5() {
debugger;
var dummy = 1;
with ({}) {
with ({}) {
dummy = 2;
}
}
dummy = 3;
}
test5();
function test6() {
debugger;
try {
throw 'stuff';
} catch (e) {
e = 1;
}
}
test6();
function test7() {
debugger;
function foo() {}
}
test7();
function test8() {
debugger;
(function foo() {})();
}
test8();
var q = 42;
var prefixes = [ "debugger; ",
"if (false) { try { throw 0; } catch(x) { return x; } }; debugger; " ];
var bodies = [ "1",
"1 ",
"1;",
"1; ",
"q",
"q ",
"q;",
"q; ",
"try { throw 'stuff' } catch (e) { e = 1; }",
"try { throw 'stuff' } catch (e) { e = 1; } ",
"try { throw 'stuff' } catch (e) { e = 1; };",
"try { throw 'stuff' } catch (e) { e = 1; }; " ];
var with_bodies = [ "with ({}) {}",
"with ({x:1}) x",
"with ({x:1}) x = 1",
"with ({x:1}) x ",
"with ({x:1}) x = 1 ",
"with ({x:1}) x;",
"with ({x:1}) x = 1;",
"with ({x:1}) x; ",
"with ({x:1}) x = 1; " ];
function test9() {
debugger;
for (var i = 0; i < prefixes.length; ++i) {
var pre = prefixes[i];
for (var j = 0; j < bodies.length; ++j) {
var body = bodies[j];
eval(pre + body);
eval("'use strict'; " + pre + body);
}
for (var j = 0; j < with_bodies.length; ++j) {
var body = with_bodies[j];
eval(pre + body);
}
}
}
test9();
function test10() {
debugger;
with ({}) {
return 10;
}
}
test10();
function test11() {
debugger;
try {
throw 'stuff';
} catch (e) {
return 10;
}
}
test11();
// Test global eval and function constructor.
for (var i = 0; i < prefixes.length; ++i) {
var pre = prefixes[i];
for (var j = 0; j < bodies.length; ++j) {
var body = bodies[j];
eval(pre + body);
eval("'use strict'; " + pre + body);
Function(pre + body)();
}
for (var j = 0; j < with_bodies.length; ++j) {
var body = with_bodies[j];
eval(pre + body);
Function(pre + body)();
}
}
try {
with({}) {
debugger;
eval("{}$%:^");
}
} catch(e) {
nop();
}
// Return from function constructed with Function constructor.
var anon = 12;
for (var i = 0; i < prefixes.length; ++i) {
var pre = prefixes[i];
Function(pre + "return 42")();
Function(pre + "return 42 ")();
Function(pre + "return 42;")();
Function(pre + "return 42; ")();
Function(pre + "return anon")();
Function(pre + "return anon ")();
Function(pre + "return anon;")();
Function(pre + "return anon; ")();
}
function nop() {}
function stress() {
debugger;
L: with ({x:12}) {
break L;
}
with ({x: 'outer'}) {
label: {
with ({x: 'inner'}) {
break label;
}
}
}
with ({x: 'outer'}) {
label: {
with ({x: 'inner'}) {
break label;
}
}
nop();
}
with ({x: 'outer'}) {
label: {
with ({x: 'middle'}) {
with ({x: 'inner'}) {
break label;
}
}
}
}
with ({x: 'outer'}) {
label: {
with ({x: 'middle'}) {
with ({x: 'inner'}) {
break label;
}
}
}
nop();
}
with ({x: 'outer'}) {
for (var i = 0; i < 3; ++i) {
with ({x: 'inner' + i}) {
continue;
}
}
}
with ({x: 'outer'}) {
label: for (var i = 0; i < 3; ++i) {
with ({x: 'middle' + i}) {
for (var j = 0; j < 3; ++j) {
with ({x: 'inner' + j}) {
continue label;
}
}
}
}
}
with ({x: 'outer'}) {
try {
with ({x: 'inner'}) {
throw 0;
}
} catch (e) {
}
}
with ({x: 'outer'}) {
try {
with ({x: 'inner'}) {
throw 0;
}
} catch (e) {
nop();
}
}
with ({x: 'outer'}) {
try {
with ({x: 'middle'}) {
with ({x: 'inner'}) {
throw 0;
}
}
} catch (e) {
}
}
try {
with ({x: 'outer'}) {
try {
with ({x: 'inner'}) {
throw 0;
}
} finally {
}
}
} catch (e) {
}
try {
with ({x: 'outer'}) {
try {
with ({x: 'inner'}) {
throw 0;
}
} finally {
nop();
}
}
} catch (e) {
}
function stress1() {
with ({x:12}) {
return x;
}
}
stress1();
function stress2() {
with ({x: 'outer'}) {
with ({x: 'inner'}) {
return x;
}
}
}
stress2();
function stress3() {
try {
with ({x: 'inner'}) {
throw 0;
}
} catch (e) {
return e;
}
}
stress3();
function stress4() {
try {
with ({x: 'inner'}) {
throw 0;
}
} catch (e) {
with ({x: 'inner'}) {
return e;
}
}
}
stress4();
}
stress();
// With block as the last(!) statement in global code.
with ({}) { debugger; }