[Bug c++/123261] ICE in diagnostics when using implicit constexpr

[addr2line at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123261

--- Comment #2 from Yuao Ma <addr2line at gmail dot com> ---
https://inbox.sourceware.org/gcc-patches/ca+m0ir_0o4sivhugd2lcxmbxznyfgd+h-4bgqztyd3hssac...@mail.gmail.com/T/#t