Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/Wstrict-overflow-18.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children |
line wrap: on
line source
/* { dg-do compile } */ /* { dg-options "-fstrict-overflow -O2 -Wstrict-overflow" } */ /* Warn about an overflow when folding i > 0, p->a - p->b can be larger than INT_MAX and thus i can wrap. */ 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) { /* See PR80511 for the XFAIL. */ if (i > 0) /* { dg-warning "signed overflow" "" { xfail *-*-* } } */ sum += 2; bar (p); } return sum; }