Bug 457920 - regexp-dna.js and generality want JSOP_GETELEM(dense array, "0") (r=mrbkap/gal).

2008-10-06 22:30:36 -07:00
parent 8e95510025
commit 24a9ca408b
6 changed files with 102 additions and 51 deletions
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -324,6 +324,13 @@ js_SetProtoOrParent(JSContext *cx, JSObject *obj, uint32 slot, JSObject *pobj)
        }
        return JS_FALSE;
    }
+
+    // Maintain the "any Array prototype has indexed properties hazard" flag.
+    if (slot == JSSLOT_PROTO &&
+        OBJ_IS_ARRAY(cx, pobj) &&
+        pobj->fslots[JSSLOT_ARRAY_LENGTH] != 0) {
+        rt->anyArrayProtoHasElement = JS_TRUE;
+    }
    return JS_TRUE;
 }