Move __STDC_* predefined macros from features.h to stdc-predef.h.
This commit is contained in:
Joseph Myers
parent
ef0aab352c
commit
ff3b3d8278
13
CONFORMANCE
13
CONFORMANCE
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@ -134,13 +134,12 @@ Compiler limitations
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====================
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The macros __STDC_IEC_559__, __STDC_IEC_559_COMPLEX__ and
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__STDC_ISO_10646__ are properly supposed to be defined by the
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compiler, and to be constant throughout the translation unit (before
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and after any library headers are included). However, they mainly
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relate to library features, and the necessary magic has yet to be
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implemented for GCC to predefine them to the correct values for the
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library in use, so glibc defines them in <features.h>. Programs that
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test them before including any standard headers may misbehave.
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__STDC_ISO_10646__ are properly supposed to be constant throughout the
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translation unit (before and after any library headers are included).
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However, they mainly relate to library features, and GCC only knows to
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preinclude <stdc-predef.h> to get their definitions in version 4.8 and
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later. Programs that test them before including any standard headers
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may misbehave with older compilers.
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GCC doesn't support the optional imaginary types. Nor does it
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understand the keyword _Complex before GCC 3.0. This has the
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@ -1,3 +1,11 @@
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2012-02-22 Joseph Myers <joseph@codesourcery.com>
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[BZ #10110]
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* include/stdc-predef.h: New file. Extracted from features.h.
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* include/features.h: Include stdc-predef.h.
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* Makefile (headers): Add stdc-predef.h.
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* CONFORMANCE (Compiler limitations): Update.
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2012-02-22 Joseph Myers <joseph@codesourcery.com>
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* manual/libc.texinfo (VERSION, UPDATED): Revert.
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2
Makefile
2
Makefile
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@ -60,7 +60,7 @@ endif # $(AUTOCONF) = no
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$(addprefix install-, no-libc.a bin lib data headers others)
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headers := limits.h values.h features.h gnu-versions.h bits/libc-lock.h \
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bits/xopen_lim.h gnu/libc-version.h
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bits/xopen_lim.h gnu/libc-version.h stdc-predef.h
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echo-headers: subdir_echo-headers
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6
NEWS
6
NEWS
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@ -10,9 +10,9 @@ Version 2.16
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* The following bugs are resolved with this release:
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174, 350, 411, 3335, 4026, 4596, 4822, 5077, 5805, 5993, 6884, 6907, 9739,
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9902, 10140, 10210, 11174, 11322, 11494, 12047, 13058, 13525, 13526,
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13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551, 13552,
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13553, 13555, 13559, 13583, 13618, 13695, 13704
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9902, 10110, 10140, 10210, 11174, 11322, 11494, 12047, 13058, 13525,
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13526, 13527, 13528, 13529, 13530, 13531, 13532, 13533, 13547, 13551,
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13552, 13553, 13555, 13559, 13583, 13618, 13695, 13704
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* ISO C11 support:
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@ -1,5 +1,4 @@
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/* Copyright (C) 1991-1993,1995-2007,2009,2010,2011
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Free Software Foundation, Inc.
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/* Copyright (C) 1991-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -337,12 +336,9 @@
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# define __USE_FORTIFY_LEVEL 0
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#endif
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/* We do support the IEC 559 math functionality, real and complex. */
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#define __STDC_IEC_559__ 1
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#define __STDC_IEC_559_COMPLEX__ 1
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/* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.1. */
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#define __STDC_ISO_10646__ 200009L
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/* Get definitions of __STDC_* predefined macros, if the compiler has
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not preincluded this header automatically. */
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#include <stdc-predef.h>
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/* This macro indicates that the installed library is the GNU C Library.
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For historic reasons the value now is 6 and this will stay from now
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@ -0,0 +1,36 @@
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/* Copyright (C) 1991-2012 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _STDC_PREDEF_H
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#define _STDC_PREDEF_H 1
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/* This header is separate from features.h so that the compiler can
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include it implicitly at the start of every compilation. It must
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not itself include <features.h> or any other header that includes
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<features.h> because the implicit include comes before any feature
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test macros that may be defined in a source file before it first
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explicitly includes a system header. GCC knows the name of this
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header in order to preinclude it. */
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/* We do support the IEC 559 math functionality, real and complex. */
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#define __STDC_IEC_559__ 1
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#define __STDC_IEC_559_COMPLEX__ 1
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/* wchar_t uses ISO 10646-1 (2nd ed., published 2000-09-15) / Unicode 3.1. */
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#define __STDC_ISO_10646__ 200009L
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#endif
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