Wrong implementation for match_prev_avail #41544
Description
| Bugzilla Link | 42199 |
| Resolution | FIXED |
| Resolved on | May 05, 2020 03:48 |
| Version | unspecified |
| OS | All |
| CC | @DougGregor,@mclow,@zygoloid,@youkaichao |
Extended Description
The following code:
#include <regex>
#include <iostream>
using namespace std;
int main()
{
regex re0("^cd");
string str = "cd";
cout << regex_search(str, re0, regex_constants::match_prev_avail) << endl;
cout << regex_search(str, re0) << endl;
}
gives the output:
1
1
But as specified in the c++ standard, the output should be:
0
1