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qafQ+3SjpvOXCpbt97+FIQHFCUi2qMAP2n0ux/h7mwwWpMy5xJ4ncOrsGALUMgs/X3ILeTxGTVM 8CBOqr5Z+G7Wxbub9GHu77e77+k1WbWOOAX2pvpjXkW/noaVpC2zdLOGWCgoHva7pOW0m31J On Thu, Jul 31, 2025 at 08:13:55PM +0200, Vlastimil Babka wrote: > >> By the way, this coding style has been a GNU C extension until the ISO C23 > >> standard. So, until the kernel's C language standard is upgraded to C23 > >> (which seems unlikely to happen anytime soon, perhaps years down the line), > >> it actually makes sense to modify this style for a practical purpose... > > > > Kernel always uses the GNU C standard by convention, so we should be good, > > but indeed I think this is the case! > > I think it's not "by convention" but quite explicitly by: > > Makefile:KBUILD_CFLAGS += -std=gnu11 I meant the kernel convention is to set a flag like this, obviously...! > > I think this is not automatically used by tools/ build? Right. > > If you git grep gnu11, you'll find various Makefile's under tools/ adding > that to CFLAGS. Maybe we can simply do that also with > tools/testing/shared/shared.mk > that's included for the vma tests. > > I don't have this gcc version so can't try myself if it helps. WangYuli - could you check? If it's as simple as this, feel free to send a patch making this change. Thanks, Lorenzo