[Bug libstdc++/81395] [5/6/7/8 Regression] basic_filebuf::overflow recurses and overflows stack

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81395

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |ASSIGNED
                 CC|                            |paolo.carlini at oracle dot com
      Known to work|                            |4.5.4
           Assignee|unassigned at gcc dot gnu.org      |redi at gcc dot gnu.org
   Target Milestone|---                         |5.5
            Summary|basic_filebuf::overflow     |[5/6/7/8 Regression]
                   |recurses and overflows      |basic_filebuf::overflow
                   |stack                       |recurses and overflows
                   |                            |stack
      Known to fail|                            |4.6.4, 4.7.4, 4.8.5, 4.9.4,
                   |                            |5.4.0, 6.3.0, 7.0

--- Comment #3 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This started in 4.6.0 with r87453

Paolo, does the change in comment 2 look right to you?