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Bug 510434: don't trace setting |arguments|, r=brendan

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This commit is contained in:
David Mandelin 2009-08-17 15:20:26 -07:00
parent 24dfed2435
commit 25b6a55ac6
2 changed files with 5 additions and 0 deletions
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3
js/src/jstracer.cpp
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@ -8697,6 +8697,9 @@ TraceRecorder::record_JSOP_IFNE()
JS_REQUIRES_STACK JSRecordingStatus
TraceRecorder::record_JSOP_ARGUMENTS()
{
if (cx->fp->flags & JSFRAME_OVERRIDE_ARGS)
ABORT_TRACE("Can't trace |arguments| if |arguments| is assigned to");
LIns* global_ins = INS_CONSTOBJ(globalObj);
LIns* argc_ins = INS_CONST(cx->fp->argc);
LIns* callee_ins = get(&cx->fp->argv[-2]);

2
js/src/trace-test/tests/basic/bug510434.js Normal file
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@ -0,0 +1,2 @@
var f = function(){ var arguments = 3; for (var j=0;j<4;++j) print(arguments); };
f();