From ddf0243e01951f0f08adcfdabc00cc2027560eeb Mon Sep 17 00:00:00 2001
From: "John F. Carr" <jfc@mit.edu>
Date: Tue, 27 Aug 1991 12:50:32 +0000
Subject: Work around xlc optimizer bug.

---
 zwgc/xmark.c | 6 ++++++
 1 file changed, 6 insertions(+)

(limited to 'zwgc/xmark.c')

diff --git a/zwgc/xmark.c b/zwgc/xmark.c
index 16142c5..7b32a80 100644
--- a/zwgc/xmark.c
+++ b/zwgc/xmark.c
@@ -173,6 +173,12 @@ void xmarkExpose(dpy,w,gram,b1,p1,b2,p2)
       swap(p1,p2);
    }
 
+#if defined(_IBMR2) && !defined(__GNUC__) && defined(RS6000_OPT_BUG)
+   /* A version of the AIX 3.1 RS/6000 C compiler needs this to prevent
+      a core dump in the loop below. */
+   &b1;
+#endif
+
    expose.type=Expose;
    expose.display=dpy;
    expose.window=w;
-- 
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