typedef __SIZE_TYPE__ size_t; extern size_t fread (void *, size_t, size_t, void *); struct ring { char buf[1024]; }; int test_one_large_item (void *fp) { struct ring ring; int ret; ret = fread(&ring, sizeof(ring), 1, fp); if (ret != 1) return 1; if (ring.buf[0] > 1) /* { dg-bogus "use of uninitialized value" } */ return 2; return 3; } int test_many_small_items (void *fp) { struct ring ring; int ret; ret = fread(&ring, 1, sizeof(ring), fp); if (ret != sizeof(ring)) return 1; if (ring.buf[0] > 1) /* { dg-bogus "use of uninitialized value" } */ return 2; return 3; }