Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/no-strict-overflow-8.c @ 111:04ced10e8804
gcc 7
author | kono |
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date | Fri, 27 Oct 2017 22:46:09 +0900 |
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/* { dg-do compile } */ /* { dg-options "-fno-strict-overflow -O2 -fdump-tree-optimized" } */ /* We cannot fold i > 0 because p->a - p->b can be larger than INT_MAX and thus i can wrap. Dual of Wstrict-overflow-18.c */ struct c { unsigned int a; unsigned int b; }; extern void bar (struct c *); int foo (struct c *p) { int i; int sum = 0; for (i = 0; i < p->a - p->b; ++i) { if (i > 0) sum += 2; bar (p); } return sum; } /* { dg-final { scan-tree-dump "i_.* > 0" "optimized" } } */