gcc/testsuite/gcc.dg/torture/pr57147-2.c

   1 /* { dg-do compile } */
   2 /* { dg-options "-fdump-tree-optimized" } */
   3 /* { dg-skip-if "" { *-*-* } { "-fno-fat-lto-objects" } { "" } } */
   4 /* { dg-skip-if "" { *-*-* } { "-O0" } { "" } } */
   5 /* { dg-require-effective-target indirect_jumps } */
   6
   7 struct __jmp_buf_tag {};
   8 typedef struct __jmp_buf_tag jmp_buf[1];
   9 extern int _setjmp (struct __jmp_buf_tag __env[1]);
  10
  11 jmp_buf g_return_jmp_buf;
  12
  13 static void SetNaClSwitchExpectations (void)
  14 {
  15   __builtin_longjmp (g_return_jmp_buf, 1);
  16 }
  17 void TestSyscall(void)
  18 {
  19   SetNaClSwitchExpectations();
  20
  21   _setjmp (g_return_jmp_buf);
  22 }
  23
  24 /* sizeof g_return_jmp_buf is zero size but it's being passed to
  25    a function declared to take an array of one element which might
  26    trigger a warning.  Prune it out:
  27    { dg-prune-output "-Wstringop-overflow" } */
  28
  29 /* { dg-final { scan-tree-dump-not "setjmp" "optimized" } } */