[Bug c++/83591] -Wduplicated-branches fires in system headers in template instantiation

[TonyELewis at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83591

--- Comment #1 from Tony E Lewis <TonyELewis at hotmail dot com> ---
Created attachment 42965
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=42965&action=edit
Intermediate file