On Mon, Apr 29, 2024, at 19:08, Timur Tabi wrote: > On Mon, 2024-04-29 at 17:30 +0200, Linux regression tracking (Thorsten > Leemhuis) wrote: >> TWIMC, there is another report about this in this thread (sadly some of >> its post did not make it to lore): >> >> https://lore.kernel.org/all/162ef3c0-1d7b-4220-a21f-b0008657f8a5@xxxxxxxxxx/ >> >> Ciao, Thorsten > > This doesn't fail on x86-64 when I build it. I also did a cross-compile to > arm64 with the arm64 defconfig, and it doesn't fail there either. > > I'm guessing this is a compiler version thing. I'm using gcc 11.4. Is that > just too old? It's too new: this is valid syntax in c23 and accepted by newer compilers as an extension to gnu11, but older versions don't like it. gcc-11 and clang-16 are fine, while gcc-10 and clang-15 as well as earlier versions produce this warning. Arnd