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authorAndreas Jaeger <aj@suse.de>2012-03-28 16:39:25 +0200
committerAndreas Jaeger <aj@suse.de>2012-04-03 09:13:59 +0200
commitb1aa60f32d34030b28bca04aeee084cd3bedecfa (patch)
tree430b4c30f7a613b4b219528ec861de1b2c5b1172 /string/byteswap.h
parent39c59c35723120c32dc42dde4115bba92305179f (diff)
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Add __bswap_64 definition for non GCC compilers.
[BZ#13926]
Currently __bswap_64 is not defined at all for non-GCC compilers.
Define it but guard it with __GLIBC_HAVE_LONG_LONG.

endian.h uses __bswap_64, make the functions only available
if __GLIBC_HAVE_LONG_LONG is defined.
Diffstat (limited to 'string/byteswap.h')
-rw-r--r--string/byteswap.h6
1 files changed, 4 insertions, 2 deletions
diff --git a/string/byteswap.h b/string/byteswap.h
index 18ca95d373..7d769573ad 100644
--- a/string/byteswap.h
+++ b/string/byteswap.h
@@ -1,4 +1,4 @@
-/* Copyright (C) 1997 Free Software Foundation, Inc.
+/* Copyright (C) 1997, 2012 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -18,6 +18,8 @@
 #ifndef _BYTESWAP_H
 #define _BYTESWAP_H	1
 
+#include <features.h>
+
 /* Get the machine specific, optimized definitions.  */
 #include <bits/byteswap.h>
 
@@ -31,7 +33,7 @@
 /* Return a value with all bytes in the 32 bit argument swapped.  */
 #define bswap_32(x) __bswap_32 (x)
 
-#if defined __GNUC__ && __GNUC__ >= 2
+#if __GLIBC_HAVE_LONG_LONG
 /* Return a value with all bytes in the 64 bit argument swapped.  */
 # define bswap_64(x) __bswap_64 (x)
 #endif