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0b5ca7c3e5
Copy regex-related files back from Gnulib, to fix a problem with static checking of regex calls noted by Martin Sebor. This merges the following changes: * New macro __attribute_nonnull__ in misc/sys/cdefs.h, for use later when copying other files back from Gnulib. * Use __GNULIB_CDEFS instead of __GLIBC__ when deciding whether to include bits/wordsize.h etc. * Avoid duplicate entries in epsilon closure table. * New regex.h macro _REGEX_NELTS to let regexec say that its pmatch arg should contain nmatch elts. Use that for regexec, instead of __attr_access (which is incorrect). * New regex.h macro _Attr_access_ which is like __attr_access except portable to non-glibc platforms. * Add some DEBUG_ASSERTs to pacify gcc -fanalyzer and to catch recently-fixed performance bugs if they recur. * Add Gnulib-specific stuff to port the dynarray- and lock-using parts of regex code to non-glibc platforms. * Fix glibc bug 11053. * Avoid some undefined behavior when popping an empty fail stack.
85 lines
3.1 KiB
C
85 lines
3.1 KiB
C
/* Extended regular expression matching and search library.
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Copyright (C) 2002-2021 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Isamu Hasegawa <isamu@yamato.ibm.com>.
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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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<https://www.gnu.org/licenses/>. */
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#define __STDC_WANT_IEC_60559_BFP_EXT__
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#ifndef _LIBC
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# include <libc-config.h>
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# if __GNUC_PREREQ (4, 6)
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# pragma GCC diagnostic ignored "-Wsuggest-attribute=pure"
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# pragma GCC diagnostic ignored "-Wvla"
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# endif
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# if __GNUC_PREREQ (4, 3)
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# pragma GCC diagnostic ignored "-Wold-style-definition"
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# pragma GCC diagnostic ignored "-Wtype-limits"
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# endif
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#endif
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/* Make sure no one compiles this code with a C++ compiler. */
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#if defined __cplusplus && defined _LIBC
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# error "This is C code, use a C compiler"
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#endif
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#ifdef _LIBC
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/* We have to keep the namespace clean. */
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# define regfree(preg) __regfree (preg)
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# define regexec(pr, st, nm, pm, ef) __regexec (pr, st, nm, pm, ef)
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# define regcomp(preg, pattern, cflags) __regcomp (preg, pattern, cflags)
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# define regerror(errcode, preg, errbuf, errbuf_size) \
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__regerror(errcode, preg, errbuf, errbuf_size)
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# define re_set_registers(bu, re, nu, st, en) \
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__re_set_registers (bu, re, nu, st, en)
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# define re_match_2(bufp, string1, size1, string2, size2, pos, regs, stop) \
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__re_match_2 (bufp, string1, size1, string2, size2, pos, regs, stop)
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# define re_match(bufp, string, size, pos, regs) \
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__re_match (bufp, string, size, pos, regs)
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# define re_search(bufp, string, size, startpos, range, regs) \
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__re_search (bufp, string, size, startpos, range, regs)
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# define re_compile_pattern(pattern, length, bufp) \
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__re_compile_pattern (pattern, length, bufp)
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# define re_set_syntax(syntax) __re_set_syntax (syntax)
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# define re_search_2(bufp, st1, s1, st2, s2, startpos, range, regs, stop) \
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__re_search_2 (bufp, st1, s1, st2, s2, startpos, range, regs, stop)
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# define re_compile_fastmap(bufp) __re_compile_fastmap (bufp)
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# include "../locale/localeinfo.h"
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#endif
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/* On some systems, limits.h sets RE_DUP_MAX to a lower value than
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GNU regex allows. Include it before <regex.h>, which correctly
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#undefs RE_DUP_MAX and sets it to the right value. */
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#include <limits.h>
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#include <regex.h>
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#include "regex_internal.h"
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#include "regex_internal.c"
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#include "regcomp.c"
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#include "regexec.c"
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/* Binary backward compatibility. */
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#if _LIBC
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# include <shlib-compat.h>
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# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_3)
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link_warning (re_max_failures, "the 're_max_failures' variable is obsolete and will go away.")
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int re_max_failures = 2000;
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# endif
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#endif
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