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SubjectRe: [PATCH 3/8] signal/sparc: Document a conflict with SI_USER with SIGFPE
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From: "Eric W. Biederman" <ebiederm@xmission.com>
Date: Fri, 30 Jun 2017 07:39:01 -0500

> diff --git a/arch/sparc/include/uapi/asm/siginfo.h b/arch/sparc/include/uapi/asm/siginfo.h
> index 2d9b79ccaa50..6bc5c677e92f 100644
> --- a/arch/sparc/include/uapi/asm/siginfo.h
> +++ b/arch/sparc/include/uapi/asm/siginfo.h
> @@ -17,6 +17,11 @@
> #define SI_NOINFO 32767 /* no information in siginfo_t */
>
> /*
> + * SIGFPE si_codes
> + */
> +#define FPE_FIXME (__SI_FAULT|0) /* Broken dup of SI_USER */
> +
> +/*
> * SIGEMT si_codes
> */
> #define EMT_TAGOVF (__SI_FAULT|1) /* tag overflow */

It's one thing to say FIXME in a comment in a kernel local header or
C file.

It's quite another to put this into the name of a macro which has
visibility in the global user compilation namespace.

I don't think you should really do that.

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