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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [testsuite/] [gcc.dg/] [setjmp-2.c] - Blame information for rev 298

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Line No. Rev Author Line
1 298 jeremybenn
/* PR middle-end/17813 */
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/* Origin: Tom Hughes <tom@compton.nu> */
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/* { dg-do run { target i?86-*-linux* x86_64-*-linux* } } */
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/* { dg-options "-O -fomit-frame-pointer" } */
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/* { dg-options "-O -fomit-frame-pointer -march=i386" { target { { i?86-*-* x86_64-*-* } && ilp32 } } } */
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#include <setjmp.h>
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#include <signal.h>
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#include <stdlib.h>
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static jmp_buf segv_jmpbuf;
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static void segv_handler(int seg)
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{
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   __builtin_longjmp(segv_jmpbuf, 1);
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}
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static int is_addressable(void *p, size_t size)
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{
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   volatile char * volatile cp = (volatile char *)p;
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   volatile int ret;
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   struct sigaction sa, origsa;
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   sigset_t mask;
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   sa.sa_handler = segv_handler;
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   sa.sa_flags = 0;
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   sigfillset(&sa.sa_mask);
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   sigaction(SIGSEGV, &sa, &origsa);
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   sigprocmask(SIG_SETMASK, NULL, &mask);
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   if (__builtin_setjmp(segv_jmpbuf) == 0) {
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      while(size--)
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         *cp++;
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      ret = 1;
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    } else
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      ret = 0;
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   sigaction(SIGSEGV, &origsa, NULL);
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   sigprocmask(SIG_SETMASK, &mask, NULL);
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   return ret;
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}
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int main(int argc, char **argv)
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{
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   is_addressable(0x0, 1);
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   return 0;
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}

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