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Fixed many compilation problems ("set, but not used" warnings) for

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gcc 4.6 that may affect Ubuntu 11.10 users. [ISC-Bugs #27588]
This commit is contained in:
Tomek Mrugalski
2012-03-09 11:18:14 +00:00
parent 9a266235e6
commit dd9237c309
19 changed files with 257 additions and 157 deletions
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16
includes/cdefs.h
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@@ -4,7 +4,7 @@
/*
* Copyright (c) 1995 RadioMail Corporation. All rights reserved.
* Copyright (c) 2011 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 2011,2012 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 2004,2009 by Internet Systems Consortium, Inc. ("ISC")
* Copyright (c) 1996-2003 by Internet Software Consortium
*
@@ -46,15 +46,25 @@
* the warning by the use of void. In conjunction with the use of -Werror
* these warnings prohibit the compilation of the package. This macro
* allows us to assign the return value to a variable and then ignore it.
*
* __attribute__((unused)) is added for avoiding another warning about set,
* but unused variable. This is produced by unused-but-set-variable switch
* that is enabled by default in gcc 4.6.
*/
#if !defined(__GNUC__) || (__GNUC__ < 4)
#define IGNORE_RET(x) (void) x
#else
#define IGNORE_RET(x) \
do { \
int ignore_return; \
ignore_return = x; \
int __attribute__((unused)) ignore_return ;\
ignore_return = x; \
} while (0)
#endif
/* This macro is defined to avoid unused-but-set-variable warning
* that is enabled in gcc 4.6
*/
#define IGNORE_UNUSED(x) { x = x; }
#endif /* __ISC_DHCP_CDEFS_H__ */