Make some runtime arguments checks be RUNTIME_ASSERT, not ASSERT.

Review URL: http://codereview.chromium.org/3411013

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5482 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/runtime.cc

@@ -946,7 +946,7 @@ static Object* Runtime_DeclareContextSlot(Arguments args) {
   Handle<String> name(String::cast(args[1]));
   PropertyAttributes mode =
       static_cast<PropertyAttributes>(Smi::cast(args[2])->value());
-  ASSERT(mode == READ_ONLY || mode == NONE);
+  RUNTIME_ASSERT(mode == READ_ONLY || mode == NONE);
   Handle<Object> initial_value(args[3]);
 
   // Declarations are always done in the function context.
@@ -8944,19 +8944,20 @@ static Object* Runtime_ClearBreakPoint(Arguments args) {
 }
 
 
-// Change the state of break on exceptions
-// args[0]: boolean indicating uncaught exceptions
-// args[1]: boolean indicating on/off
+// Change the state of break on exceptions.
+// args[0]: Enum value indicating whether to affect caught/uncaught exceptions.
+// args[1]: Boolean indicating on/off.
 static Object* Runtime_ChangeBreakOnException(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 2);
-  ASSERT(args[0]->IsNumber());
-  ASSERT(args[1]->IsBoolean());
+  RUNTIME_ASSERT(args[0]->IsNumber());
+  CONVERT_BOOLEAN_CHECKED(enable, args[1]);
 
-  // Update break point state
+  // If the number doesn't match an enum value, the ChangeBreakOnException
+  // function will default to affecting caught exceptions.
   ExceptionBreakType type =
       static_cast<ExceptionBreakType>(NumberToUint32(args[0]));
-  bool enable = args[1]->ToBoolean()->IsTrue();
+  // Update break point state.
   Debug::ChangeBreakOnException(type, enable);
   return Heap::undefined_value();
 }
@@ -8967,7 +8968,7 @@ static Object* Runtime_ChangeBreakOnException(Arguments args) {
 static Object* Runtime_IsBreakOnException(Arguments args) {
   HandleScope scope;
   ASSERT(args.length() == 1);
-  ASSERT(args[0]->IsNumber());
+  RUNTIME_ASSERT(args[0]->IsNumber());
 
   ExceptionBreakType type =
       static_cast<ExceptionBreakType>(NumberToUint32(args[0]));

test/mjsunit/fuzz-natives.js

@@ -129,7 +129,6 @@ var knownProblems = {
   // which means that we have to propagate errors back.
   "SetFunctionBreakPoint": true,
   "SetScriptBreakPoint": true,
-  "ChangeBreakOnException": true,
   "PrepareStep": true,
 
   // Too slow.