Current git fails two sets of tests on cygwin due apparently to problems
in the regex library. One set of tests does language based
word-matching, and has a common failure during regex compilation. The
suffix clause ("|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+") is common to all
of these, removing that clause eliminates the regcomp failure.
A test case extracted from the git sources is below - this works
correctly on Fedora 18, fails on Cygwin:
$ gcc test-regex.c
$ ./a.out
failed regcomp() for pattern '[^<>= ]+|[^[:space:]]|[▒-▒][▒-▒]+'
The failure disappears when the suffix clause is removed from pat_html.
This is happening on a current installation:
$ uname -a
CYGWIN_NT-5.1 virt-winxp 1.7.21(0.267/5/3) 2013-07-15 12:17 i686 Cygwin
$ cygcheck -c gcc-core gcc-g++
Cygwin Package Information
Package Version Status
gcc-core 4.7.3-1 OK
gcc-g++ 4.7.3-1 OK
------------
#include <regex.h>
#include <stdio.h>
int main(int argc, char **argv)
{
char *pat_html = "[^<>= \t]+"
"|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+";
char *str = "={}\nfred";
regex_t r;
regmatch_t m[1];
if (regcomp(&r, pat_html, REG_EXTENDED | REG_NEWLINE)) {
printf("failed regcomp() for pattern '%s'\n", pat_html);
return 1;
}
if (regexec(&r, str, 1, m, 0)) {
printf("no match of pattern '%s' to string '%s'\n",
pat_html, str);
return 1;
}
return 0;
}
Mark
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