Date: Thu, 31 Jan 2019 09:32:11 -0700 From: Warner Losh <imp@bsdimp.com> To: Steve Kargl <sgk@troutmask.apl.washington.edu> Cc: FreeBSD Standards <freebsd-standards@freebsd.org>, "freebsd-toolchain@FreeBSD.org" <freebsd-toolchain@freebsd.org> Subject: Re: Is libc C99 compliant? Message-ID: <CANCZdfppuxhuStH%2BMQ%2Be3EBPk1VahK7HGze-_i%2Bpj7gFTm_UNg@mail.gmail.com> In-Reply-To: <20190130212904.GA66299@troutmask.apl.washington.edu> References: <20190130212904.GA66299@troutmask.apl.washington.edu>
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On Wed, Jan 30, 2019 at 11:33 PM Steve Kargl <
sgk@troutmask.apl.washington.edu> wrote:
> When building gcc file gcc/config/freebsd.c contains
>
> #define TARGET_LIBC_HAS_FUNCTION no_c99_libc_has_function
>
> In targhook.c, one finds
>
> /* By default we assume that c99 functions are present at the runtime,
> but sincos is not. */
> bool
> default_libc_has_function (enum function_class fn_class)
> {
> if (fn_class == function_c94
> || fn_class == function_c99_misc
> || fn_class == function_c99_math_complex)
> return true;
>
> return false;
> }
>
> bool
> no_c99_libc_has_function (enum function_class fn_class ATTRIBUTE_UNUSED)
> {
> return false;
> }
>
> Shouldi/can TARGET_LIBC_HAS_FUNCTION be updated to at least
> default_libc_has_function? More importantly now that libm
> contains sincos[fl], should FreeBSD gcc config file be updated
> to use
>
> bool
> bsd_libc_has_function (enum function_class fn_class)
> {
> if (fn_class == function_c94
> || fn_class == function_c99_misc
> || fn_class == function_c99_math_complex
> || fn_class == function_sincos)
> return true;
>
> return false;
> }
On its surface, this seems sane to me. what does this control? And is this
for our ancient 4.2 or current gcc...
Warner
>
> --
> Steve
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