[Bug c++/82346] New: String is not detected as a part of std

[krzysio.kurek at wp dot pl]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82346

            Bug ID: 82346
           Summary: String is not detected as a part of std
           Product: gcc
           Version: 5.4.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: krzysio.kurek at wp dot pl
  Target Milestone: ---

Most basic code fails to compile.

#include <iostream>
#include <string>

int main ()
{
  std::string perfect = std::to_string(1+2+4+7+14) + " is a perfect number";
  std::cout << perfect << '\n';
  return 0;
}