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Bug 779819 - Fix handling of MaybeArguments as second argument of jsop_funapply call. (r=nbp)

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This commit is contained in:
Kannan Vijayan 2012-08-08 14:01:46 -04:00
parent f1cd2ae670
commit 65a6f4f28e
1 changed files with 8 additions and 2 deletions
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10
js/src/ion/IonBuilder.cpp
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@ -3585,9 +3585,15 @@ IonBuilder::jsop_funapply(uint32 argc)
if (argc != 2)
return makeCall(native, argc, false);
// Reject when called with an Array or object.
// Disable compilation if the second argument to |apply| cannot be guaranteed
// to be either definitely |arguments| or definitely not |arguments|.
types::TypeSet *argObjTypes = oracle->getCallArg(script, argc, 2, pc);
if (oracle->isArgumentObject(argObjTypes) != DefinitelyArguments)
LazyArgumentsType isArgObj = oracle->isArgumentObject(argObjTypes);
if (isArgObj == MaybeArguments)
return abort("NYI: Handle fun.apply with MaybeArguments.");
// Fallback to regular call if arg 2 is not definitely |arguments|.
if (isArgObj != DefinitelyArguments)
return makeCall(native, argc, false);
// Extract call target.