From f1743f00e6058d2dee44510f3ef165c549a6291e Mon Sep 17 00:00:00 2001
From: "Frank Ch. Eigler" <fche@elastic.org>
Date: Sat, 12 Jul 2008 19:10:22 -0400
Subject: PR6738: restore support for rhel4-era (2.6.9) kernels

---
 runtime/unwind/unwind.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'runtime/unwind/unwind.h')

diff --git a/runtime/unwind/unwind.h b/runtime/unwind/unwind.h
index ae5e75d3..78a4bfef 100644
--- a/runtime/unwind/unwind.h
+++ b/runtime/unwind/unwind.h
@@ -25,6 +25,11 @@
 
 #define MAX_STACK_DEPTH 8
 
+#ifndef BUILD_BUG_ON_ZERO
+#define BUILD_BUG_ON_ZERO(e) (sizeof(char[1 - 2 * !!(e)]) - 1)
+#endif
+
+
 #define EXTRA_INFO(f) { \
 		BUILD_BUG_ON_ZERO(offsetof(struct unwind_frame_info, f) \
 		                  % FIELD_SIZEOF(struct unwind_frame_info, f)) \
-- 
cgit