[Bug libstdc++/61329] #include and _GLIBCXX_DEBUG causes multiple symbol definition.

[pluto at agmk dot net]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61329

--- Comment #1 from Pawel Sikora <pluto at agmk dot net> ---
Created attachment 32861
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=32861&action=edit
testcase