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authorAndy Wingo <wingo@pobox.com>2011-10-27 13:45:04 +0200
committerAndy Wingo <wingo@pobox.com>2011-10-27 13:45:04 +0200
commit4938d3cb742de2a356586c55e5af32e193c5990b (patch)
treeb4bfe0fd26e102c5fa38ca9965bc4ebdbae8e3b4 /build-aux/snippet/unused-parameter.h
parent9d013330154852bc2309947adaa30b32418642c0 (diff)
parent2be3feb17e5456bba71749e0e97adf45c32c4e0e (diff)
downloadguile-4938d3cb742de2a356586c55e5af32e193c5990b.tar.gz
Merge remote-tracking branch 'origin/stable-2.0'
Conflicts: GUILE-VERSION libguile/deprecated.c libguile/gc-malloc.c module/language/tree-il/peval.scm
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+/* A C macro for declaring that specific function parameters are not used.
+ Copyright (C) 2008-2011 Free Software Foundation, Inc.
+
+ This program is free software: you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
+
+/* _GL_UNUSED_PARAMETER is a marker that can be appended to function parameter
+ declarations for parameters that are not used. This helps to reduce
+ warnings, such as from GCC -Wunused-parameter. The syntax is as follows:
+ type param _GL_UNUSED_PARAMETER
+ or more generally
+ param_decl _GL_UNUSED_PARAMETER
+ For example:
+ int param _GL_UNUSED_PARAMETER
+ int *(*param)(void) _GL_UNUSED_PARAMETER
+ Other possible, but obscure and discouraged syntaxes:
+ int _GL_UNUSED_PARAMETER *(*param)(void)
+ _GL_UNUSED_PARAMETER int *(*param)(void)
+ */
+#ifndef _GL_UNUSED_PARAMETER
+# if __GNUC__ >= 3 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+# define _GL_UNUSED_PARAMETER __attribute__ ((__unused__))
+# else
+# define _GL_UNUSED_PARAMETER
+# endif
+#endif