69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
/* Check some way in where code suppression caused various
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miscompilations. */
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extern int printf (const char *, ...);
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typedef __SIZE_TYPE__ size_t;
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size_t _brk_start, _brk_end;
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void * extend_brk(size_t size, size_t align)
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{
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size_t mask = align - 1;
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void *ret = 0;
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do {
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if (__builtin_expect(!!(_brk_start == 0), 0))
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do {
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printf("wrong1\n");
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} while (0);
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} while (0);
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_brk_end = (_brk_end + mask) & ~mask;
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ret = (void *)_brk_end;
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_brk_end += size;
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return ret;
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}
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static void get_args (int a, int b)
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{
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if (a != 1)
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printf("wrong2\n");
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else
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printf("okay\n");
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}
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void bla(void)
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{
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int __ret = 42;
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({
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if (__builtin_expect(!!(0), 0)) {
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if (__builtin_expect(!!__ret, 0))
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printf("wrong3\n");
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int x = !!(__ret);
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}
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__ret;
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});
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get_args(!!__ret, sizeof(__ret));
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}
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_Bool chk(unsigned long addr, unsigned long limit, unsigned long size)
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{
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_Bool ret;
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/* This just needs to compile, no runtime test. (And it doesn't compile
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only with certain internal checking added that's not committed). */
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if (0)
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ret = 0 != (!!(addr > limit - size));
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return 0;
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}
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int main()
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{
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void *r;
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_brk_start = 1024;
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_brk_end = 1024;
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r = extend_brk (4096, 16);
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if (!r)
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printf("wrong4\n");
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else
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printf("okay\n");
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bla();
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return 0;
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}
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