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author | Pedro Alves <palves@redhat.com> | 2012-04-18 20:45:25 +0000 |
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committer | Pedro Alves <palves@redhat.com> | 2012-04-18 20:45:25 +0000 |
commit | 770d76d7b229ccefbe28a1d0c5ce26ae127639a6 (patch) | |
tree | f642f884d6f49605433c97d3d8e86f141ea31efe /gdb/gnulib/extra/warn-on-use.h | |
parent | 174e088e25e495c956b751a0d4100b94f5c885ec (diff) | |
download | gdb-770d76d7b229ccefbe28a1d0c5ce26ae127639a6.zip gdb-770d76d7b229ccefbe28a1d0c5ce26ae127639a6.tar.gz gdb-770d76d7b229ccefbe28a1d0c5ce26ae127639a6.tar.bz2 |
2012-04-18 Pedro Alves <palves@redhat.com>
Update gnulib from latest git.
(639ea5ae15e39fe48d43e04864b2997301e4b969)
* gnulib/Makefile.am: Update.
* gnulib/dummy.c: Update.
* gnulib/extra/arg-nonnull.h: Update.
* gnulib/extra/c++defs.h: Update.
* gnulib/extra/update-copyright: Update.
* gnulib/extra/warn-on-use.h: Update.
* gnulib/inttypes.in.h: Update.
* gnulib/m4/00gnulib.m4: Update.
* gnulib/m4/extensions.m4: Update.
* gnulib/m4/gnulib-cache.m4: Update.
* gnulib/m4/gnulib-common.m4: Update.
* gnulib/m4/gnulib-comp.m4: Update.
* gnulib/m4/gnulib-tool.m4: Update.
* gnulib/m4/include_next.m4: Update.
* gnulib/m4/inttypes-pri.m4: Update.
* gnulib/m4/inttypes.m4: Update.
* gnulib/m4/longlong.m4: Update.
* gnulib/m4/memchr.m4: Update.
* gnulib/m4/memmem.m4: Update.
* gnulib/m4/mmap-anon.m4: Update.
* gnulib/m4/multiarch.m4: Update.
* gnulib/m4/onceonly.m4: Update.
* gnulib/m4/stddef_h.m4: Update.
* gnulib/m4/stdint.m4: Update.
* gnulib/m4/string_h.m4: Update.
* gnulib/m4/warn-on-use.m4: Update.
* gnulib/m4/wchar_h.m4: Update.
* gnulib/m4/wchar_t.m4: Update.
* gnulib/m4/wint_t.m4: Update.
* gnulib/memchr.c: Update.
* gnulib/memmem.c: Update.
* gnulib/stddef.in.h: Update.
* gnulib/stdint.in.h: Update.
* gnulib/str-two-way.h: Update.
* gnulib/string.in.h: Update.
* gnulib/wchar.in.h: Update.
* gnulib/extra/arg-nonnull.h: Delete.
* gnulib/extra/c++defs.h: Delete.
* gnulib/extra/warn-on-use.h: Delete.
* gnulib/m4/wchar_h.m4: Delete.
* gnulib/m4/wint_t.m4: Delete.
* gnulib/wchar.in.h: Delete.
* gnulib/extra/snippets/arg-nonnull.h: New.
* gnulib/extra/snippets/c++defs.h: New.
* gnulib/extra/snippets/warn-on-use.h: New.
* aclocal.m4: Regenerate.
* config.in: Regenerate.
* configure: Regenerate.
* gnulib/Makefile.in: Regenerate.
* gdbserver/aclocal.m4: Regenerate.
* gdbserver/config.in: Regenerate.
* gdbserver/configure: Regenerate.
Diffstat (limited to 'gdb/gnulib/extra/warn-on-use.h')
-rw-r--r-- | gdb/gnulib/extra/warn-on-use.h | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/gdb/gnulib/extra/warn-on-use.h b/gdb/gnulib/extra/warn-on-use.h deleted file mode 100644 index 171e599..0000000 --- a/gdb/gnulib/extra/warn-on-use.h +++ /dev/null @@ -1,109 +0,0 @@ -/* A C macro for emitting warnings if a function is used. - Copyright (C) 2010 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 - Lesser 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_WARN_ON_USE (function, "literal string") issues a declaration - for FUNCTION which will then trigger a compiler warning containing - the text of "literal string" anywhere that function is called, if - supported by the compiler. If the compiler does not support this - feature, the macro expands to an unused extern declaration. - - This macro is useful for marking a function as a potential - portability trap, with the intent that "literal string" include - instructions on the replacement function that should be used - instead. However, one of the reasons that a function is a - portability trap is if it has the wrong signature. Declaring - FUNCTION with a different signature in C is a compilation error, so - this macro must use the same type as any existing declaration so - that programs that avoid the problematic FUNCTION do not fail to - compile merely because they included a header that poisoned the - function. But this implies that _GL_WARN_ON_USE is only safe to - use if FUNCTION is known to already have a declaration. Use of - this macro implies that there must not be any other macro hiding - the declaration of FUNCTION; but undefining FUNCTION first is part - of the poisoning process anyway (although for symbols that are - provided only via a macro, the result is a compilation error rather - than a warning containing "literal string"). Also note that in - C++, it is only safe to use if FUNCTION has no overloads. - - For an example, it is possible to poison 'getline' by: - - adding a call to gl_WARN_ON_USE_PREPARE([[#include <stdio.h>]], - [getline]) in configure.ac, which potentially defines - HAVE_RAW_DECL_GETLINE - - adding this code to a header that wraps the system <stdio.h>: - #undef getline - #if HAVE_RAW_DECL_GETLINE - _GL_WARN_ON_USE (getline, "getline is required by POSIX 2008, but" - "not universally present; use the gnulib module getline"); - #endif - - It is not possible to directly poison global variables. But it is - possible to write a wrapper accessor function, and poison that - (less common usage, like &environ, will cause a compilation error - rather than issue the nice warning, but the end result of informing - the developer about their portability problem is still achieved): - #if HAVE_RAW_DECL_ENVIRON - static inline char ***rpl_environ (void) { return &environ; } - _GL_WARN_ON_USE (rpl_environ, "environ is not always properly declared"); - # undef environ - # define environ (*rpl_environ ()) - #endif - */ -#ifndef _GL_WARN_ON_USE - -# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) -/* A compiler attribute is available in gcc versions 4.3.0 and later. */ -# define _GL_WARN_ON_USE(function, message) \ -extern __typeof__ (function) function __attribute__ ((__warning__ (message))) -# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING -/* Verify the existence of the function. */ -# define _GL_WARN_ON_USE(function, message) \ -extern __typeof__ (function) function -# else /* Unsupported. */ -# define _GL_WARN_ON_USE(function, message) \ -_GL_WARN_EXTERN_C int _gl_warn_on_use -# endif -#endif - -/* _GL_WARN_ON_USE_CXX (function, rettype, parameters_and_attributes, "string") - is like _GL_WARN_ON_USE (function, "string"), except that the function is - declared with the given prototype, consisting of return type, parameters, - and attributes. - This variant is useful for overloaded functions in C++. _GL_WARN_ON_USE does - not work in this case. */ -#ifndef _GL_WARN_ON_USE_CXX -# if 4 < __GNUC__ || (__GNUC__ == 4 && 3 <= __GNUC_MINOR__) -# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ -extern rettype function parameters_and_attributes \ - __attribute__ ((__warning__ (msg))) -# elif __GNUC__ >= 3 && GNULIB_STRICT_CHECKING -/* Verify the existence of the function. */ -# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ -extern rettype function parameters_and_attributes -# else /* Unsupported. */ -# define _GL_WARN_ON_USE_CXX(function,rettype,parameters_and_attributes,msg) \ -_GL_WARN_EXTERN_C int _gl_warn_on_use -# endif -#endif - -/* _GL_WARN_EXTERN_C declaration; - performs the declaration with C linkage. */ -#ifndef _GL_WARN_EXTERN_C -# if defined __cplusplus -# define _GL_WARN_EXTERN_C extern "C" -# else -# define _GL_WARN_EXTERN_C extern -# endif -#endif |