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Bug 653026 - Fix NoSuchMethod (r=Waldo)

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This commit is contained in:
Bill McCloskey 2011-05-20 11:27:22 -07:00
parent c303dfca62
commit 6204deb7f6
1 changed files with 17 additions and 6 deletions
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23
js/src/jsinterp.cpp
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@ -59,6 +59,7 @@
#include "jsdbgapi.h"
#include "jsfun.h"
#include "jsgc.h"
#include "jsgcmark.h"
#include "jsinterp.h"
#include "jsiter.h"
#include "jslock.h"
@ -476,6 +477,13 @@ BoxNonStrictThis(JSContext *cx, const CallReceiver &call)
const uint32 JSSLOT_FOUND_FUNCTION = 0;
const uint32 JSSLOT_SAVED_ID = 1;
static void
no_such_method_trace(JSTracer *trc, JSObject *obj)
{
gc::MarkValue(trc, obj->getSlot(JSSLOT_FOUND_FUNCTION), "found function");
gc::MarkValue(trc, obj->getSlot(JSSLOT_SAVED_ID), "saved id");
}
Class js_NoSuchMethodClass = {
"NoSuchMethod",
JSCLASS_HAS_RESERVED_SLOTS(2) | JSCLASS_IS_ANONYMOUS,
@ -486,6 +494,14 @@ Class js_NoSuchMethodClass = {
EnumerateStub,
ResolveStub,
ConvertStub,
NULL, /* finalize */
NULL, /* reserved0 */
NULL, /* checkAccess */
NULL, /* call */
NULL, /* construct */
NULL, /* XDR */
NULL, /* hasInstance */
no_such_method_trace /* trace */
};
/*
@ -529,13 +545,8 @@ js_OnUnknownMethod(JSContext *cx, Value *vp)
if (!obj)
return false;
/*
* Null map to cause prompt and safe crash if this object were to
* escape due to a bug. This will make the object appear to be a
* stillborn instance that needs no finalization, which is sound:
* NoSuchMethod helper objects own no manually allocated resources.
*/
obj->init(cx, &js_NoSuchMethodClass, NULL, NULL, NULL, false);
obj->setSharedNonNativeMap();
obj->setSlot(JSSLOT_FOUND_FUNCTION, tvr.value());
obj->setSlot(JSSLOT_SAVED_ID, vp[0]);
vp[0].setObject(*obj);