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 987599e..b3bb86d 100644 (file)
--- a/tools/setjmp_t.c
+++ b/tools/setjmp_t.c
@@ -82,7 +82,7 @@ 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);