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Bug 686571 - Check for jit->pcLengths before using (r=bhackett)

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This commit is contained in:
Steve Fink 2011-09-07 17:25:25 -07:00
parent 72b02dfde4
commit e479aadc29
1 changed files with 7 additions and 5 deletions
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12
js/src/methodjit/PolyIC.cpp
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@ -2224,13 +2224,14 @@ inline uint32 frameCountersOffset(JSContext *cx)
LookupStatus
BaseIC::disable(JSContext *cx, const char *reason, void *stub)
{
if (cx->hasRunOption(JSOPTION_PCCOUNT)) {
JITScript *jit = cx->fp()->jit();
if (jit->pcLengths) {
uint32 offset = frameCountersOffset(cx);
cx->fp()->jit()->pcLengths[offset].picsLength = 0;
jit->pcLengths[offset].picsLength = 0;
}
spew(cx, "disabled", reason);
Repatcher repatcher(cx->fp()->jit());
Repatcher repatcher(jit);
repatcher.relink(slowPathCall, FunctionPtr(stub));
return Lookup_Uncacheable;
}
@ -2238,9 +2239,10 @@ BaseIC::disable(JSContext *cx, const char *reason, void *stub)
void
BaseIC::updatePCCounters(JSContext *cx, Assembler &masm)
{
if (cx->hasRunOption(JSOPTION_PCCOUNT)) {
JITScript *jit = cx->fp()->jit();
if (jit->pcLengths) {
uint32 offset = frameCountersOffset(cx);
cx->fp()->jit()->pcLengths[offset].picsLength += masm.size();
jit->pcLengths[offset].picsLength += masm.size();
}
}