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regex.3: SYNOPSIS: Use 'restrict' in prototypes 

Both POSIX and glibc use 'restrict' in regcomp(), regexec(),
regerror().
Let's use it here too.

.../glibc$ grep_glibc_prototype regcomp
posix/regex.h:644:
extern int regcomp (regex_t *_Restrict_ __preg,
		    const char *_Restrict_ __pattern,
		    int __cflags);
.../glibc$ grep_glibc_prototype regexec
posix/regex.h:648:
extern int regexec (const regex_t *_Restrict_ __preg,
		    const char *_Restrict_ __String, size_t __nmatch,
		    regmatch_t __pmatch[_Restrict_arr_],
		    int __eflags);
.../glibc$ grep_glibc_prototype regerror
posix/regex.h:653:
extern size_t regerror (int __errcode, const regex_t *_Restrict_ __preg,
			char *_Restrict_ __errbuf, size_t __errbuf_size);
.../glibc$

Signed-off-by: Alejandro Colomar <alx.manpages@gmail.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Alejandro Colomar 2021-03-08 19:53:29 +01:00 committed by Michael Kerrisk
parent 0f8d366c7e
commit 716df87cf9
1 changed files with 8 additions and 6 deletions
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14
man3/regex.3
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@ -34,13 +34,15 @@ regcomp, regexec, regerror, regfree \- POSIX regex functions
.nf
.B #include <regex.h>
.PP
.BI "int regcomp(regex_t *" preg ", const char *" regex ", int " cflags );
.BI "int regexec(const regex_t *" preg ", const char *" string \
", size_t " nmatch ,
.BI " regmatch_t " pmatch[] ", int " eflags );
.BI "int regcomp(regex_t *restrict " preg ", const char *restrict " regex ,
.BI " int " cflags );
.BI "int regexec(const regex_t *restrict " preg \
", const char *restrict " string ,
.BI " size_t " nmatch ", regmatch_t " pmatch "[restrict]\
, int " eflags );
.PP
.BI "size_t regerror(int " errcode ", const regex_t *" preg ", char *" errbuf ,
.BI " size_t " errbuf_size );
.BI "size_t regerror(int " errcode ", const regex_t *restrict " preg ,
.BI " char *restrict " errbuf ", size_t " errbuf_size );
.BI "void regfree(regex_t *" preg );
.fi
.SH DESCRIPTION