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commit 69da074d7adfab7b57004a0dea9403a928e310a5
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Author: Ulrich Drepper <drepper@gmail.com>
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Date: Wed Nov 10 02:38:35 2010 -0500
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Fix warnings in __bswap_16.
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diff --git a/sysdeps/i386/bits/byteswap.h b/sysdeps/i386/bits/byteswap.h
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index 1f3fc5e..c246ae8 100644
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--- a/sysdeps/i386/bits/byteswap.h
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+++ b/sysdeps/i386/bits/byteswap.h
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@@ -1,5 +1,5 @@
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/* Macros to swap the order of bytes in integer values.
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- Copyright (C) 1997, 1998, 2000, 2002, 2003, 2006, 2007, 2008
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+ Copyright (C) 1997, 1998, 2000, 2002, 2003, 2006, 2007, 2008, 2010
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@@ -27,26 +27,27 @@
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/* Swap bytes in 16 bit value. */
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#define __bswap_constant_16(x) \
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- ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
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+ ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
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#ifdef __GNUC__
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# if __GNUC__ >= 2
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# define __bswap_16(x) \
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(__extension__ \
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- ({ register unsigned short int __v, __x = (x); \
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+ ({ register unsigned short int __v, __x = (unsigned short int) (x); \
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if (__builtin_constant_p (__x)) \
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__v = __bswap_constant_16 (__x); \
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else \
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__asm__ ("rorw $8, %w0" \
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: "=r" (__v) \
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- : "0" (__x) \
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- : "cc"); \
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+ : "0" (__x) \
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+ : "cc"); \
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__v; }))
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# else
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/* This is better than nothing. */
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# define __bswap_16(x) \
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(__extension__ \
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- ({ register unsigned short int __x = (x); __bswap_constant_16 (__x); }))
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+ ({ register unsigned short int __x = (unsigned short int) (x); \
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+ __bswap_constant_16 (__x); }))
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# endif
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#else
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static __inline unsigned short int
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@@ -122,7 +123,7 @@ __bswap_32 (unsigned int __bsx)
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(__extension__ \
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({ union { __extension__ unsigned long long int __ll; \
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unsigned long int __l[2]; } __w, __r; \
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- if (__builtin_constant_p (x)) \
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+ if (__builtin_constant_p (x)) \
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__r.__ll = __bswap_constant_64 (x); \
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else \
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{ \
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diff --git a/sysdeps/x86_64/bits/byteswap.h b/sysdeps/x86_64/bits/byteswap.h
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index 08b38e8..e350fb8 100644
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--- a/sysdeps/x86_64/bits/byteswap.h
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+++ b/sysdeps/x86_64/bits/byteswap.h
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@@ -1,5 +1,5 @@
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/* Macros to swap the order of bytes in integer values.
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- Copyright (C) 1997, 1998, 2000, 2002, 2003, 2007, 2008
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+ Copyright (C) 1997, 1998, 2000, 2002, 2003, 2007, 2008, 2010
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Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@@ -29,12 +29,12 @@
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/* Swap bytes in 16 bit value. */
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#define __bswap_constant_16(x) \
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- ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8))
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+ ((unsigned short int) ((((x) >> 8) & 0xff) | (((x) & 0xff) << 8)))
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#if defined __GNUC__ && __GNUC__ >= 2
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# define __bswap_16(x) \
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(__extension__ \
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- ({ register unsigned short int __v, __x = (x); \
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+ ({ register unsigned short int __v, __x = (unsigned short int) (x); \
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if (__builtin_constant_p (__x)) \
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__v = __bswap_constant_16 (__x); \
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else \
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@@ -47,7 +47,8 @@
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/* This is better than nothing. */
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# define __bswap_16(x) \
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(__extension__ \
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- ({ register unsigned short int __x = (x); __bswap_constant_16 (__x); }))
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+ ({ register unsigned short int __x = (unsigned short int) (x); \
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+ __bswap_constant_16 (__x); }))
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#endif
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@@ -120,16 +121,16 @@
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# define __bswap_64(x) \
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(__extension__ \
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({ union { __extension__ unsigned long long int __ll; \
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- unsigned int __l[2]; } __w, __r; \
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- if (__builtin_constant_p (x)) \
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- __r.__ll = __bswap_constant_64 (x); \
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- else \
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- { \
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- __w.__ll = (x); \
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- __r.__l[0] = __bswap_32 (__w.__l[1]); \
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- __r.__l[1] = __bswap_32 (__w.__l[0]); \
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- } \
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- __r.__ll; }))
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+ unsigned int __l[2]; } __w, __r; \
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+ if (__builtin_constant_p (x)) \
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+ __r.__ll = __bswap_constant_64 (x); \
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+ else \
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+ { \
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+ __w.__ll = (x); \
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+ __r.__l[0] = __bswap_32 (__w.__l[1]); \
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+ __r.__l[1] = __bswap_32 (__w.__l[0]); \
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+ } \
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+ __r.__ll; }))
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# endif
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#endif
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