[Bug c++/61167] New: ::std::map::operator[]() throws arithmetic exception

[hrehf...@uni-koblenz.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61167

            Bug ID: 61167
           Summary: ::std::map::operator[]() throws arithmetic exception
           Product: gcc
           Version: 4.9.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hrehf...@uni-koblenz.de

See the following bug-report:
https://github.com/Andersbakken/rtags/issues/174#issuecomment-42923032

This is the code:
https://github.com/Andersbakken/rtags/blob/master/src/Project.cpp#L503

Version: 4.9.0 20140507 (prerelease) (yesterday's archlinux gcc)

Sorry that this is not a minimal example or a better bug report. I have almost
zero knowlege about the code, but this seems like it should never happen. (I
thought it would be better  to report /something/, feel free to ignore. I will
tell the others to add to the report if possible. )