[Bug libstdc++/57273] New: stringstream str initialization fails

[ycollette.nospam at free dot fr]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=57273

            Bug ID: 57273
           Summary: stringstream str initialization fails
           Product: gcc
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: ycollette.nospam at free dot fr

It tried to initialize the content of a stringstream using the following code:

std::stringstream tmpLabel;

tmpLabel.str("test ");
tmpLabel << 1;

And the result fails. I've got on screen: '1est' instead of 'test 1'.

The workaround:

std::stringstream tmpLabel;

tmpLabel.str("");
tmpLabel << "test " << 1;

Here is a test file:

#include <iostream>
#include <sstream>

int main()
{
        std::stringstream tmp;

        tmp.str("test\0");

        tmp << 1;

        std::cout << "result = |" << tmp.str() << "|" << std::endl;

        tmp.str("");

        tmp << "test " << 1;

        std::cout << "result = |" << tmp.str() << "|" << std::endl;

        return 0;
}