libstdc++/3358: wrong return value of find_first_not_of

[arvin@suse.de]

>Number:         3358
>Category:       libstdc++
>Synopsis:       wrong return value of find_first_not_of
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Jun 22 04:06:01 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     arvin@suse.de
>Release:        gcc 3.0
>Organization:
>Environment:

>Description:
the string function find_first_not_of return
a wrong value if the second argument is the
empty string.
>How-To-Repeat:
#include <iostream.h>
#include <string>

int
main ()
{
    std::string a = "abcdef";

    cout << a.find_first_not_of ("abcdef") << '\n';
    cout << a.find_first_not_of ("abef") << '\n';
    cout << a.find_first_not_of ("0123") << '\n';
    cout << a.find_first_not_of ("") << '\n';
}

gcc 2.95:

4294967295
2
0
0

gcc 3.0:

4294967295
2
0
4294967295
>Fix:

>Release-Note:
>Audit-Trail:
>Unformatted: