diff options
Diffstat (limited to 'include/libc-internal.h')
| -rw-r--r-- | include/libc-internal.h | 71 |
1 files changed, 18 insertions, 53 deletions
diff --git a/include/libc-internal.h b/include/libc-internal.h index e4395dd..be6c021 100644 --- a/include/libc-internal.h +++ b/include/libc-internal.h @@ -1,5 +1,20 @@ -/* This file contains a number of internal prototype declarations that - don't fit anywhere else. */ +/* Internal prototype declarations that don't fit anywhere else. + Copyright (C) 2000-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 Lesser General Public + License along with the GNU C Library; if not, see + <http://www.gnu.org/licenses/>. */ #ifndef _LIBC_INTERNAL # define _LIBC_INTERNAL 1 @@ -74,56 +89,6 @@ extern __typeof (__profile_frequency) __profile_frequency attribute_hidden; #define PTR_ALIGN_UP(base, size) \ ((__typeof__ (base)) ALIGN_UP ((uintptr_t) (base), (size))) -/* Ignore the value of an expression when a cast to void does not - suffice (in particular, for a call to a function declared with - attribute warn_unused_result). */ -#define ignore_value(x) \ - ({ __typeof__ (x) __ignored_value = (x); (void) __ignored_value; }) - -/* The macros to control diagnostics are structured like this, rather - than a single macro that both pushes and pops diagnostic state and - takes the affected code as an argument, because the GCC pragmas - work by disabling the diagnostic for a range of source locations - and do not work when all the pragmas and the affected code are in a - single macro expansion. */ - -/* Push diagnostic state. */ -#define DIAG_PUSH_NEEDS_COMMENT _Pragma ("GCC diagnostic push") - -/* Pop diagnostic state. */ -#define DIAG_POP_NEEDS_COMMENT _Pragma ("GCC diagnostic pop") - -#define _DIAG_STR1(s) #s -#define _DIAG_STR(s) _DIAG_STR1(s) - -/* Ignore the diagnostic OPTION. VERSION is the most recent GCC - version for which the diagnostic has been confirmed to appear in - the absence of the pragma (in the form MAJOR.MINOR for GCC 4.x, - just MAJOR for GCC 5 and later). Uses of this pragma should be - reviewed when the GCC version given is no longer supported for - building glibc; the version number should always be on the same - source line as the macro name, so such uses can be found with grep. - Uses should come with a comment giving more details of the - diagnostic, and an architecture on which it is seen if possibly - optimization-related and not in architecture-specific code. This - macro should only be used if the diagnostic seems hard to fix (for - example, optimization-related false positives). */ -#define DIAG_IGNORE_NEEDS_COMMENT(version, option) \ - _Pragma (_DIAG_STR (GCC diagnostic ignored option)) - -/* Similar to DIAG_IGNORE_NEEDS_COMMENT the following macro ignores the - diagnostic OPTION but only if optimizations for size are enabled. - This is required because different warnings may be generated for - different optimization levels. For example a key piece of code may - only generate a warning when compiled at -Os, but at -O2 you could - still want the warning to be enabled to catch errors. In this case - you would use DIAG_IGNORE_Os_NEEDS_COMMENT to disable the warning - only for -Os. */ -#ifdef __OPTIMIZE_SIZE__ -# define DIAG_IGNORE_Os_NEEDS_COMMENT(version, option) \ - _Pragma (_DIAG_STR (GCC diagnostic ignored option)) -#else -# define DIAG_IGNORE_Os_NEEDS_COMMENT(version, option) -#endif +#include <libc-diag.h> #endif /* _LIBC_INTERNAL */ |