https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95820
--- Comment #1 from Haoxin Tu <haoxintu at gmail dot com> --- (In reply to Haoxin Tu from comment #0) > $g++ -w -fpermissive small.cc Here is a mistake, and it should be $g++ -w -fpermissive bug.cc
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=95820
--- Comment #1 from Haoxin Tu <haoxintu at gmail dot com> --- (In reply to Haoxin Tu from comment #0) > $g++ -w -fpermissive small.cc Here is a mistake, and it should be $g++ -w -fpermissive bug.cc