https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94013
--- Comment #5 from fdlbxtqi <euloanty at live dot com> --- (In reply to fdlbxtqi from comment #4) > I noticed LLVM's libc++ has the same issue when I did the test to libstdc++. > However, their bug reporting port has closed. How can I report that? > > It is amazing that two mainstream C++ standard library implementations > create the same bug here. It looks like libstdc++ introduced this bug from GCC 10 while libc++ always has this issue.