зеркало из https://github.com/github/ruby.git
gc.c: Cast int literal "1" to bits_t
... because shifting by more than 31 bits has undefined behavior (depending upon platform). Coverity Scan found this issue.
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ecfc09d053
2
gc.c
2
gc.c
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@ -4199,7 +4199,7 @@ gc_page_sweep(rb_objspace_t *objspace, rb_heap_t *heap, struct heap_page *sweep_
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/* create guard : fill 1 out-of-range */
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bits[BITMAP_INDEX(p)] |= BITMAP_BIT(p)-1;
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bits[BITMAP_INDEX(p) + sweep_page->total_slots / BITS_BITLENGTH] |= ~((1 << ((NUM_IN_PAGE(p) + sweep_page->total_slots) % BITS_BITLENGTH)) - 1);
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bits[BITMAP_INDEX(p) + sweep_page->total_slots / BITS_BITLENGTH] |= ~(((bits_t)1 << ((NUM_IN_PAGE(p) + sweep_page->total_slots) % BITS_BITLENGTH)) - 1);
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for (i=0; i < HEAP_PAGE_BITMAP_LIMIT; i++) {
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bitset = ~bits[i];
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