1// \0 is not a valid backref, it is undefined by the standard
2// we treat such cases as literal char
3#include <regex.h>
4#include "test.h"
5
6int main(void)
7{
8	char buf[200];
9	char pat[] = "a\\0";
10	regex_t r;
11	int n;
12
13	n = regcomp(&r, pat, 0);
14	if (n) {
15		regerror(n, &r, buf, sizeof buf);
16		t_error("regcomp(%s) returned %d (%s) wanted 0\n", pat, n, buf);
17	}
18	n = regexec(&r, "a0", 0, 0, 0);
19	if (n) {
20		regerror(n, &r, buf, sizeof buf);
21		t_error("regexec(/%s/ ~ \"a0\") returned %d (%s), wanted 0\n",
22			pat, n, buf);
23	}
24
25	return t_status;
26}
27