[Bug regression/81331] New: [8 Regression] FAIL: 21_strings/basic_string/modifiers/insert/char/1.cc execution test

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81331

            Bug ID: 81331
           Summary: [8 Regression] FAIL:
                    21_strings/basic_string/modifiers/insert/char/1.cc
                    execution test
           Product: gcc
           Version: 8.0
            Status: UNCONFIRMED
          Keywords: wrong-code
          Severity: normal
          Priority: P3
         Component: regression
          Assignee: unassigned at gcc dot gnu.org
          Reporter: redi at gcc dot gnu.org
                CC: hubicka at gcc dot gnu.org
  Target Milestone: ---

This appeared at r249966 although some testresults show it at earlier revisions
e.g.  https://gcc.gnu.org/ml/gcc-testresults/2017-07/msg00396.html has the
failure at 249963