https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86226
Jonathan Wakely <redi at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to zhonghao from comment #0) > It seems that the bug is not fixed, right? Wrong. The old bug was fixed by making it a "pedwarn" i.e. diagnosing the extension when -pedantic is used. That was fixed. In C++2a the code is now valid, not a GNU extension, so you get no warning with -std=c++2a, as expected. This is not a bug.