mark = lrc->roots[m];
mark = JSVAL_TO_INT(lrc->roots[m]);
js_MarkLocalRoots(JSContext *cx, JSLocalRootStack *lrs){    unsigned n, m, mark;    JSLocalRootChunk *lrc;    n = lrs->rootCount;    if (n == 0)        return;    mark = lrs->scopeMark;    lrc = lrs->topChunk;    do {        while (--n > mark) {#ifdef GC_MARK_DEBUG            char name[22];            JS_snprintf(name, sizeof name, "<local root %u>", n);#else            const char *name = NULL;#endif            m = n & JSLRS_CHUNK_MASK;            JS_ASSERT(JSVAL_IS_GCTHING(lrc->roots[m]));            JS_MarkGCThing(cx, JSVAL_TO_GCTHING(lrc->roots[m]), name, NULL);            if (m == 0)                lrc = lrc->down;        }        m = n & JSLRS_CHUNK_MASK;        mark = lrc->roots[m];        if (m == 0)            lrc = lrc->down;    } while (n != 0);    JS_ASSERT(!lrc);}