[Bug other/82696] "File not found"-Message if source exists, but doesnt have .c extension

[slohmann@uni-wuppertal.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=82696

--- Comment #4 from slohmann@uni-wuppertal.de ---
Ok, have confirmed that it works fine with GCC 5/6/7, so it has obviously been
fixed. Didn't find a bugreport so i assumed it would be still there in newer
versions too...by bad.

Keep up the good work!