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Bug 561279 - Don't assume there is only one stack frame in global code. r=jorendorff

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This commit is contained in:
Blake Kaplan 2010-05-28 16:01:04 -07:00
parent 620032b563
commit c0c914d70f
1 changed files with 13 additions and 1 deletions
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14
js/src/jstracer.cpp
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@ -14035,11 +14035,23 @@ TraceRecorder::record_JSOP_BINDNAME()
if (!fp->fun) {
obj = fp->scopeChain;
#ifdef DEBUG
JSStackFrame *fp2 = fp;
#endif
// In global code, fp->scopeChain can only contain blocks whose values
// are still on the stack. We never use BINDNAME to refer to these.
while (obj->getClass() == &js_BlockClass) {
// The block's values are still on the stack.
JS_ASSERT(obj->getPrivate() == js_FloatingFrameIfGenerator(cx, fp));
#ifdef DEBUG
// NB: fp2 can't be a generator frame, because !fp->fun.
while (obj->getPrivate() != fp2) {
JS_ASSERT(fp2->flags & JSFRAME_SPECIAL);
fp2 = fp2->down;
if (!fp2)
JS_NOT_REACHED("bad stack frame");
}
#endif
obj = obj->getParent();
// Blocks always have parents.
JS_ASSERT(obj);