https://bugs.exim.org/show_bug.cgi?id=2086
Bug ID: 2086
Summary: Bug in Regex match rule
Product: PCRE
Version: 8.40
Hardware: x86
OS: Linux
Status: NEW
Severity: bug
Priority: medium
Component: Code
Assignee: p...@hermes.cam.ac.uk
Reporter: yjaey...@gmail.com
CC: pcre-dev@exim.org
For the following regex: (02-)?[0-9]{3}-[0-9]{3}
It doesn't correctly match the string: 02-123-123
the longest match is "123-123"
Here is the code snippet that reproduces this bug:
#include <stdio.h>
#include <string.h>
#include "pcre.h"
int main(void)
{
char *regex = "(02-)?[0-9]{3}-[0-9]{3}";
const char *err;
int erro, rc;
size_t size;
pcre *re;
char *input = "02-123-123";
int ovec[3], ret;;
int workspace[512];
re = pcre_compile(regex, 0, &err, &erro, NULL);
if(!re) {
printf("ERROR\n");
}
rc = pcre_fullinfo(re, NULL, PCRE_INFO_SIZE, &size);
printf("SIZE: %d\n", (int)size);
ret = pcre_dfa_exec(re, NULL, input, strlen(input), 0,
PCRE_PARTIAL_SOFT, ovec, 3, workspace, 512);
memset(workspace, 0, sizeof(workspace));
fprintf(stderr, "JYD: ret = %d [%d, %d, %d]\n", ret, ovec[0], ovec[1],
ovec[2]);
fprintf(stderr, "REG: %s / INPUT: %s\n", regex, input);
return 0;
}
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