[Bug c/91312] New: -Wconversion warning with += operator

[kosotiro at yahoo dot gr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91312

            Bug ID: 91312
           Summary: -Wconversion warning with += operator
           Product: gcc
           Version: 8.3.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c
          Assignee: unassigned at gcc dot gnu.org
          Reporter: kosotiro at yahoo dot gr
  Target Milestone: ---