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| author | Paul Eggert <eggert@cs.ucla.edu> | 2018-06-28 12:23:31 -0700 |
|---|---|---|
| committer | Paul Eggert <eggert@cs.ucla.edu> | 2018-06-28 12:24:21 -0700 |
| commit | f59be4169e656da3be4510ebe68db83d8200074c (patch) | |
| tree | 9e9ed5e3e09ed06b2d4e2d26d79375097fafff8b /lib/regex.h | |
| parent | 16aa5a2efe82e01a147b4022258fa9a272f67625 (diff) | |
| download | gnulib-f59be4169e656da3be4510ebe68db83d8200074c.tar.gz | |
regex: port to recently proposed glibc regex merge
This patch is inspired by Adhemerval Zanella's recent proposal
https://www.sourceware.org/ml/libc-alpha/2018-06/msg00905.html
to merge glibc and Gnulib regex. It aims to simplify the merge on
the glibc side, without keeping Gnulib portable.
* lib/regex.h: Fix a problem with glibc installed-header checking,
as follows:
(_Restrict_): Prefer __restrict if defined or if GCC 2.95 or later.
(_Restrict_arr_): Prefer __restrict_arr if defined,
otherwise prefer _Restrict_ if C99 or GCC 3.1 or later (but not C++).
* lib/regex_internal.c (re_string_realloc_buffers, build_wcs_buffer)
(build_wcs_upper_buffer, build_upper_buffer)
(re_string_translate_buffer, re_string_context_at):
Move decls here from lib/regex_internal.h, for glibc internal tests.
(build_wcs_upper_buffer): Use __wcrtomb, not wcrtomb, fixing
glibc BZ #18496.
* lib/regex_internal.h (lock_fini) [_LIBC]: Cast to 0 to pacify
-Wunused-value.
(bitset_set, bitset_clear, bitset_contain, bitset_empty)
(bitset_set_all, bitset_copy, bitset_not, bitset_merge)
(bitset_mask): Now static inline, and without any __attribute__
((unused)) decoration, for glibc internal tests.
Diffstat (limited to 'lib/regex.h')
| -rw-r--r-- | lib/regex.h | 25 |
1 files changed, 12 insertions, 13 deletions
diff --git a/lib/regex.h b/lib/regex.h index 9ed74c3dfd..32933bc6d5 100644 --- a/lib/regex.h +++ b/lib/regex.h @@ -1,7 +1,6 @@ /* Definitions for data structures and routines for the regular expression library. - Copyright (C) 1985, 1989-1993, 1995-1998, 2000-2003, 2005-2018 Free Software - Foundation, Inc. + Copyright (C) 1985, 1989-2018 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 @@ -608,28 +607,28 @@ extern int re_exec (const char *); # endif #endif -/* GCC 2.95 and later have "__restrict"; C99 compilers have +/* For plain 'restrict', use glibc's __restrict if defined. + Otherwise, GCC 2.95 and later have "__restrict"; C99 compilers have "restrict", and "configure" may have defined "restrict". Other compilers use __restrict, __restrict__, and _Restrict, and 'configure' might #define 'restrict' to those words, so pick a different name. */ #ifndef _Restrict_ -# if 199901L <= __STDC_VERSION__ -# define _Restrict_ restrict -# elif 2 < __GNUC__ || (2 == __GNUC__ && 95 <= __GNUC_MINOR__) +# if defined __restrict || 2 < __GNUC__ + (95 <= __GNUC_MINOR__) # define _Restrict_ __restrict +# elif 199901L <= __STDC_VERSION__ || defined restrict +# define _Restrict_ restrict # else # define _Restrict_ # endif #endif -/* gcc 3.1 and up support the [restrict] syntax. Don't trust - sys/cdefs.h's definition of __restrict_arr, though, as it - mishandles gcc -ansi -pedantic. */ +/* For [restrict], use glibc's __restrict_arr if available. + Otherwise, GCC 3.1 (not in C++ mode) and C99 support [restrict]. */ #ifndef _Restrict_arr_ -# if ((199901L <= __STDC_VERSION__ \ - || ((3 < __GNUC__ || (3 == __GNUC__ && 1 <= __GNUC_MINOR__)) \ - && !defined __STRICT_ANSI__)) \ - && !defined __GNUG__) +# ifdef __restrict_arr +# define _Restrict_arr_ __restrict_arr +# elif ((199901L <= __STDC_VERSION__ || 3 < __GNUC__ + (1 <= __GNUC_MINOR__)) \ + && !defined __GNUG__) # define _Restrict_arr_ _Restrict_ # else # define _Restrict_arr_ |