https://gcc.gnu.org/bugzilla/show_bug.cgi?id=112838
--- Comment #6 from Ahmad Nour <eng.ahmad.nour at gmail dot com> --- (In reply to Jonathan Wakely from comment #5) > (In reply to Ahmad Nour from comment #2) > > I tried with clang-12 -Wall -Wextra main.cpp, but I didn't get that > > hint/note. Am I missing something? > > You should get that note with clang-12 (and newer versions) > https://godbolt.org/z/KM65MKrPa Thanks, but I also don't see it in godbolt output. Note: I'm referring to this exact note: > <source>:14:18: note: in implicit copy constructor for 'NonCopyable' first > required here > 14 | NonCopyable b(a); I can't find anything related to line #13: NonCopyable b(a); which is the root cause of the issue
