Mark the invalid memory location as volatile, otherwise clang would

optimize the access to it with an illegal instruction.  But the
tests needs a SIGSEGV, it would fail with SIGILL.

1 files changed, 2 insertions, 2 deletions

diff --git a/src/regress/lib/libc/setjmp-signal/setjmp-signal.c b/src/regress/lib/libc/setjmp-signal/setjmp-signal.c
index 310e4052ef..b50f6b27c5 100644
--- a/src/regress/lib/libc/setjmp-signal/setjmp-signal.c
+++ b/src/regress/lib/libc/setjmp-signal/setjmp-signal.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: setjmp-signal.c,v 1.3 2003/01/03 20:46:05 miod Exp $  */
+/*      $OpenBSD: setjmp-signal.c,v 1.4 2017/07/27 12:31:09 bluhm Exp $ */
 /*
  *      Written by Artur Grabowski <art@openbsd.org> 2002 Public Domain.
  */
@@ -19,7 +19,7 @@ main()
 {
         signal(SIGSEGV, segv_handler);
         if (setjmp(jb) == 0) {
-                *((int *)0L) = 0;
+                *((volatile int *)0L) = 0;
                 return (1);
         }
         return (0);