glibc/include/regex.h
Paul Eggert 0b5ca7c3e5 regex: copy back from Gnulib
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.
2021-09-21 08:00:44 -07:00

51 lines
1.6 KiB
C

#ifndef _REGEX_H
#include <posix/regex.h>
#ifndef _ISOMAC
/* Document internal interfaces. */
extern reg_syntax_t __re_set_syntax (reg_syntax_t syntax);
extern const char *__re_compile_pattern (const char *pattern, size_t length,
struct re_pattern_buffer *buffer);
extern int __re_compile_fastmap (struct re_pattern_buffer *buffer)
attribute_hidden;
extern int __re_search (struct re_pattern_buffer *buffer, const char *string,
int length, int start, int range,
struct re_registers *regs);
extern int __re_search_2
(struct re_pattern_buffer *buffer, const char *string1,
int length1, const char *string2, int length2,
int start, int range, struct re_registers *regs, int stop);
extern int __re_match
(struct re_pattern_buffer *buffer, const char *string,
int length, int start, struct re_registers *regs);
extern int __re_match_2
(struct re_pattern_buffer *buffer, const char *string1,
int length1, const char *string2, int length2,
int start, struct re_registers *regs, int stop);
extern void __re_set_registers
(struct re_pattern_buffer *buffer, struct re_registers *regs,
unsigned num_regs, regoff_t *starts, regoff_t *ends);
extern int __regcomp (regex_t *__preg, const char *__pattern, int __cflags);
libc_hidden_proto (__regcomp)
extern int __regexec (const regex_t *__preg, const char *__string,
size_t __nmatch, regmatch_t __pmatch[__nmatch],
int __eflags);
libc_hidden_proto (__regexec)
extern size_t __regerror (int __errcode, const regex_t *__preg,
char *__errbuf, size_t __errbuf_size);
extern void __regfree (regex_t *__preg);
libc_hidden_proto (__regfree)
#endif
#endif