From: Ivan Maidanski <ivmai@mail.ru>
Date: Thu, 23 Mar 2017 00:16:12 +0000 (+0300)
Subject: Fix tools/setjmp_t hang (OS X)
X-Git-Tag: v7.4.6~142
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=5eb7a201598978de232650bb3e6ddd6ded4c687e;p=gc

Fix tools/setjmp_t hang (OS X)

* tools/setjmp_t.c (main): Declare "y" static variable as volatile (to
prevent reordering/optimization of y++).
---

diff --git a/tools/setjmp_t.c b/tools/setjmp_t.c
index 05798c26..0ed433d6 100644
--- a/tools/setjmp_t.c
+++ b/tools/setjmp_t.c
@@ -78,7 +78,7 @@ int main(void)
     unsigned ps = GETPAGESIZE();
     jmp_buf b;
     register int x = (int)strlen("a");  /* 1, slightly disguised */
-    static int y = 0;
+    static volatile int y = 0;
 
     sp = (word)(&sp);
     printf("This appears to be a %s running %s\n", MACH_TYPE, OS_TYPE);