From 05e39401915a79e6099f50b480d770dc46262779 Mon Sep 17 00:00:00 2001
From: David Lawrence <source@isc.org>
Date: Thu, 25 May 2000 16:44:25 +0000
Subject: [PATCH] made operand to left shift in ISC_OFFSET_MAXIMUM unsigned to
 avoid integer overflow.

---
 lib/isc/unix/include/isc/offset.h | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/lib/isc/unix/include/isc/offset.h b/lib/isc/unix/include/isc/offset.h
index 19d1f18164..7e3d3395e2 100644
--- a/lib/isc/unix/include/isc/offset.h
+++ b/lib/isc/unix/include/isc/offset.h
@@ -15,7 +15,7 @@
  * SOFTWARE.
  */
 
-/* $Id: offset.h,v 1.4 2000/05/25 03:34:34 tale Exp $ */
+/* $Id: offset.h,v 1.5 2000/05/25 16:44:25 tale Exp $ */
 
 #ifndef ISC_OFFSET_H
 #define ISC_OFFSET_H 1
@@ -31,7 +31,9 @@ typedef off_t isc_offset_t;
 /*
  * POSIX says "Additionally, blkcnt_t and off_t are extended signed integral
  * types", so the maximum value is all 1s except for the high bit.
+ * 1 is sized as an unsigned long long to keep the Solaris 5.6 compiler
+ * from complaining about integer overflow from the left shift.
  */
-#define ISC_OFFSET_MAXIMUM (~((off_t)1 << (sizeof(off_t) * CHAR_BIT - 1)))
+#define ISC_OFFSET_MAXIMUM ((off_t)~(1ULL << (sizeof(off_t) * CHAR_BIT - 1)))
 
 #endif /* ISC_OFFSET_H */