> Which version of what compiler did you use to build Emacs, and what
> were the compilation switches?

This was from emacs-wayland Arch package for x86_64.

It is compiled with GCC 14.1.1, according to the .comment section.

Here is what emacs has recorded in `system-configuration-options`:

"--with-pgtk --with-native-compilation=aot --sysconfdir=/etc --prefix=/usr --libexecdir=/usr/lib --with-tree-sitter --localstatedir=/var --with-cairo --disable-build-details --with-harfbuzz --with-libsystemd --with-modules 'CFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection         -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -g -ffile-prefix-map=/build/emacs/src=/usr/src/debug/emacs -flto=auto' 'LDFLAGS=-Wl,-O1 -Wl,--sort-common -Wl,--as-needed -Wl,-z,relro -Wl,-z,now          -Wl,-z,pack-relative-relocs -flto=auto' 'CXXFLAGS=-march=x86-64 -mtune=generic -O2 -pipe -fno-plt -fexceptions         -Wp,-D_FORTIFY_SOURCE=3 -Wformat -Werror=format-security         -fstack-clash-protection -fcf-protection         -fno-omit-frame-pointer -mno-omit-leaf-frame-pointer -Wp,-D_GLIBCXX_ASSERTIONS -g -ffile-prefix-map=/build/emacs/src=/usr/src/debug/emacs -flto=auto'"

I am currently building a debug version without optimizations as well, I will get back to your other question when that is complete.