Re: [PATCH] selftests/bpf: add -std=gnu11 to BPF_CFLAGS and CFLAGS

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On Fri, Jan 10, 2025 at 3:44 PM Ihor Solodrai <ihor.solodrai@xxxxx> wrote:
>
> On Friday, January 10th, 2025 at 3:34 PM, Andrii Nakryiko <andrii.nakryiko@xxxxxxxxx> wrote:
>
> >
> >
> > On Tue, Jan 7, 2025 at 3:58 PM Ihor Solodrai ihor.solodrai@xxxxx wrote:
> >
> > > Latest versions of GCC BPF use C23 standard by default. This causes
> > > compilation errors in vmlinux.h due to bool types declarations.
> >
> >
> > Do you have an example of an error? Why can't we fix that to work with C23?
>
> See a thread here: https://lore.kernel.org/bpf/ZryncitpWOFICUSCu4HLsMIZ7zOuiH5f4jrgjAh0uiOgKvZzQES09eerwIXNonKEq0U6hdI9pHSCPahUKihTeS8NKlVfkcuiRLotteNbQ9I=@pm.me/
>

Yeah, thanks, still catching up, just got to that thread and saw the
discussion. What a mess, I'll pretend I don't know about this. :)

> The one I ran into is about:
>
>     enum {
>         false = 0,
>         true = 1,
>     };
>
> Which is illegal in C23, because true and false are reserved words.
>
> >
> > [...]





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