gcc/testsuite/gcc.target/i386/naked-3.c

   1 /* { dg-do run { target *-*-linux* *-*-gnu* } } */
   2 /* { dg-options "-O0" } */
   3
   4 #include <unistd.h>
   5 #include <signal.h>
   6 #include <stdlib.h>
   7
   8 /* Verify that naked function traps at the end.  */
   9
  10 void
  11 __attribute__((naked, noinline, noclone))
  12 #ifdef __i386__
  13 __attribute__((regparm(1)))
  14 #endif
  15 naked (int data)
  16 {
  17   if (data == 0x12345678)
  18     return;
  19   asm ("ret");
  20 }
  21
  22 void handler (int i)
  23 {
  24   exit (0);
  25 }
  26
  27 int main ()
  28 {
  29   struct sigaction s;
  30
  31   sigemptyset (&s.sa_mask);
  32   s.sa_handler = handler;
  33   s.sa_flags = 0;
  34   sigaction (SIGILL, &s, NULL);
  35
  36   naked (0x12345678);
  37
  38   abort ();
  39 }