Mercurial > hg > CbC > CbC_gcc
view gcc/testsuite/gcc.dg/20041106-1.c @ 111:04ced10e8804
gcc 7
author | kono |
---|---|
date | Fri, 27 Oct 2017 22:46:09 +0900 |
parents | |
children | 1830386684a0 |
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/* { dg-do run { target *-*-linux* *-*-gnu* *-*-solaris* } } */ /* { dg-options -O2 } */ #include <sys/types.h> #include <sys/mman.h> #include <unistd.h> #include <stdlib.h> struct S { long x __attribute__((packed)); }; /* { dg-warning "attribute ignored" "" { target default_packed } } */ volatile long sink; void foo (struct S *s) { sink = s->x; } int main () { size_t ps = getpagesize (); char *ptr, *page; struct S *s; ptr = malloc (3*ps); page = (char *)(((__UINTPTR_TYPE__)ptr + (ps - 1)) & -ps); munmap (page + ps, ps); s = (struct S *)(page + ps - sizeof(struct S)); foo(s); return 0; }