[Bug libstdc++/87642] New: Cannot handle fr_FR.UTF8 thousands separator

[rguenth at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87642

            Bug ID: 87642
           Summary: Cannot handle fr_FR.UTF8 thousands separator
           Product: gcc
           Version: 9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: rguenth at gcc dot gnu.org
  Target Milestone: ---

#include <iostream>
#include <locale>

using namespace std;

int
main()
{
  locale::global(locale(""));
  cout.imbue(locale());
  cout << 1000 << endl;
}

> LANG=fr_FR.UTF8 ./a.out 
1�000
> LANG=fr_FR.UTF8 ./a.out | hexdump -c
0000000   1 342   0   0   0  \n                                        
0000006