lib/regcomp.c will not compile with C99 strict compiler because of
the usage of the non-standard "__restrict".
I question the use here of the "restrict" for the purpose of
optimization so I compiled and tested 2.25 both with and without
the "restrict" and there was no measurable difference. The testsuite
passes fully regardless.
We may simply change "__restrict" to the C99 spec clean "restrict" or
remove it entirely with no worries.
--- ./lib/regcomp.c_backup Sun Apr 10 16:50:01 2016
+++ ./lib/regcomp.c Sun Aug 28 02:35:43 2016
@@ -464,7 +464,7 @@
the return codes and their meanings.) */
int
-regcomp (regex_t *__restrict preg, const char *__restrict pattern, int
cflags)
+regcomp (regex_t *restrict preg, const char *restrict pattern, int cflags)
{
reg_errcode_t ret;
reg_syntax_t syntax = ((cflags & REG_EXTENDED) ?
RE_SYNTAX_POSIX_EXTENDED
@@ -523,7 +523,7 @@
from either regcomp or regexec. We don't use PREG here. */
size_t
-regerror (int errcode, const regex_t *__restrict preg, char *__restrict
errbuf,
+regerror (int errcode, const regex_t *restrict preg, char *restrict errbuf,
size_t errbuf_size)
{
const char *msg;
The compiler here was c99 in Oracle Studio 12.5 on Solaris 10 sparc
with strict C99 compliance mode enforced.
Dennis Clarke
