A couple of other "stack overflow" vs. "has_pending_exception()" issues fixed.

BUG=chromium:471659, chromium:494158
LOG=N

Review URL: https://codereview.chromium.org/1151333005

Cr-Commit-Position: refs/heads/master@{#28816}

src/bootstrapper.cc

@@ -2466,7 +2466,7 @@ bool Genesis::InstallExperimentalNatives() {
 #undef INSTALL_EXPERIMENTAL_NATIVES
   }
 
-  CallUtilsFunction(isolate(), "PostExperimentals");
+  if (!CallUtilsFunction(isolate(), "PostExperimentals")) return false;
 
   InstallExperimentalNativeFunctions();
   InstallExperimentalBuiltinFunctionIds();

src/d8.cc

@@ -1018,6 +1018,10 @@ void Shell::InitializeDebugger(Isolate* isolate) {
   Handle<ObjectTemplate> global_template = CreateGlobalTemplate(isolate);
   utility_context_.Reset(isolate,
                          Context::New(isolate, NULL, global_template));
+  if (utility_context_.IsEmpty()) {
+    printf("Failed to initialize debugger\n");
+    Shell::Exit(1);
+  }
 #endif  // !V8_SHARED
 }
 

src/debug.cc

@@ -637,8 +637,8 @@ bool Debug::CompileDebuggerScript(Isolate* isolate, int index) {
     if (maybe_exception.ToHandle(&exception)) {
       isolate->set_pending_exception(*exception);
       MessageHandler::ReportMessage(isolate, NULL, message);
-      isolate->clear_pending_exception();
     }
+    DCHECK(!maybe_exception.is_null());
     return false;
   }
 

src/isolate.cc

@@ -945,16 +945,22 @@ void ReportBootstrappingException(Handle<Object> exception,
   // builtins, print the actual source here so that line numbers match.
   if (location->script()->source()->IsString()) {
     Handle<String> src(String::cast(location->script()->source()));
-    PrintF("Failing script:\n");
+    PrintF("Failing script:");
     int len = src->length();
-    int line_number = 1;
-    PrintF("%5d: ", line_number);
-    for (int i = 0; i < len; i++) {
-      uint16_t character = src->Get(i);
-      PrintF("%c", character);
-      if (character == '\n' && i < len - 2) {
-        PrintF("%5d: ", ++line_number);
+    if (len == 0) {
+      PrintF(" <not available>\n");
+    } else {
+      PrintF("\n");
+      int line_number = 1;
+      PrintF("%5d: ", line_number);
+      for (int i = 0; i < len; i++) {
+        uint16_t character = src->Get(i);
+        PrintF("%c", character);
+        if (character == '\n' && i < len - 2) {
+          PrintF("%5d: ", ++line_number);
+        }
       }
+      PrintF("\n");
     }
   }
 #endif

src/runtime/runtime-strings.cc

@@ -121,11 +121,13 @@ RUNTIME_FUNCTION(Runtime_StringReplaceOneCharWithString) {
   if (isolate->has_pending_exception()) return isolate->heap()->exception();
 
   subject = String::Flatten(subject);
-  ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result,
-      StringReplaceOneCharWithString(isolate, subject, search, replace, &found,
-                                     kRecursionLimit));
-  return *result;
+  if (StringReplaceOneCharWithString(isolate, subject, search, replace, &found,
+                                     kRecursionLimit).ToHandle(&result)) {
+    return *result;
+  }
+  if (isolate->has_pending_exception()) return isolate->heap()->exception();
+  // In case of empty handle and no pending exception we have stack overflow.
+  return isolate->StackOverflow();
 }
 
 

test/mjsunit/mjsunit.status

@@ -178,9 +178,6 @@
   # Issue 488: this test sometimes times out.
   'array-constructor': [PASS, TIMEOUT],
 
-  # Run only on fast architectures, contains no architecture dependent code.
-  'regress/regress-crbug-491062': [PASS, ['arch != ia32 and arch != x64', SKIP], NO_VARIANTS],
-
   # Very slow on ARM and MIPS, contains no architecture dependent code.
   'unicode-case-overoptimization': [PASS, NO_VARIANTS, ['arch == arm or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', TIMEOUT]],
   'regress/regress-3976': [PASS, NO_VARIANTS, ['arch == arm or arch == android_arm or arch == android_arm64 or arch == mipsel or arch == mips64el or arch == mips', SKIP]],

test/mjsunit/regress/regress-crbug-450960.js

@@ -2,15 +2,19 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --stack-size=70
+// Flags: --stack-size=100
 
 "a".replace(/a/g, "");
 
+var count = 0;
 function test() {
    try {
      test();
    } catch(e) {
-     "b".replace(/(b)/g, new []);
+     if (count < 50) {
+       count++;
+       "b".replace(/(b)/g, new []);
+     }
    }
 }
 

test/mjsunit/regress/regress-crbug-471659.js

+// Copyright 2015 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.
+
+// Flags: --stack-size=100
+
+var s = "0123456789ABCDEF";
+for (var i = 0; i < 16; i++) s += s;
+
+var count = 0;
+function f() {
+  try {
+    f();
+    if (count < 10) {
+      f();
+    }
+  } catch(e) {
+      s.replace("+", "-");
+  }
+  count++;
+}
+f();

test/mjsunit/regress/regress-crbug-491062.js

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-// Flags: --allow-natives-syntax --stack-limit=32
+// Flags: --allow-natives-syntax --stack-size=100
 
 function g() {}
 
@@ -13,7 +13,7 @@ function f() {
   } catch(e) {
     print(e.stack);
   }
-  if (count < 50) {
+  if (count < 100) {
     count++;
     %DebugGetLoadedScripts();
   }