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Avoid needless prototype-shape purges (454035, r=igor).

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This commit is contained in:
Brendan Eich
2008-09-09 11:24:03 -07:00
parent 16b9d15c51
commit a5c7e9132c
8 changed files with 72 additions and 74 deletions
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6
js/src/jsarray.cpp
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@@ -1171,9 +1171,9 @@ js_MakeArraySlow(JSContext *cx, JSObject *obj)
? INT_TO_JSVAL(length)
: JSVAL_VOID;
/* Make sure we preserve any flags borrowing bits in JSSLOT_CLASS. */
obj->fslots[JSSLOT_CLASS] ^= (jsval) &js_ArrayClass;
obj->fslots[JSSLOT_CLASS] |= (jsval) &js_SlowArrayClass;
/* Make sure we preserve any flags borrowing bits in classword. */
obj->classword ^= (jsuword) &js_ArrayClass;
obj->classword |= (jsuword) &js_SlowArrayClass;
/* Swap in our new map. */
oldmap = obj->map;