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Fix layout assumption of condition-less for-loop. (Bug 732861, r=jandem)

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This commit is contained in:
Nicolas Pierron 2012-03-09 10:33:40 -08:00
parent 4e09528c6c
commit a90182989f
1 changed files with 4 additions and 1 deletions
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5
js/src/ion/IonBuilder.cpp
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@ -1779,7 +1779,7 @@ IonBuilder::forLoop(JSOp op, jssrcnote *sn)
// for loops have the following structures:
//
// NOP or POP
// [GOTO cond]
// [GOTO cond | NOP]
// LOOPHEAD
// body:
// ; [body]
@ -1799,6 +1799,9 @@ IonBuilder::forLoop(JSOp op, jssrcnote *sn)
JS_ASSERT(bodyStart + GetJumpOffset(bodyStart) == condpc);
bodyStart = GetNextPc(bodyStart);
} else {
// No loop condition, such as for(j = 0; ; j++)
JS_ASSERT(JSOp(*bodyStart) == JSOP_NOP);
bodyStart = GetNextPc(bodyStart);
loopEntry = GetNextPc(bodyStart);
}
jsbytecode *loopHead = bodyStart;