[PATCH, libgfortran]: Fix PR59313, gfortran.dg/erf_3.F90 FAILs

[Tobias Burnus]

Rainer Orth wrote:
> Unfortunately, this breaks Solaris/SPARC bootstrap:
>
> /vol/gcc/src/hg/trunk/local/libgfortran/intrinsics/erfc_scaled.c:64:22: error: 'M_2_SQRTPIl' undeclared (first use in this function)
>   # define _M_2_SQRTPI M_2_SQRTPIl
>
> It seems M_2_SQRTPI[lq] are GNU extensions, thus missing in Solaris
> <math.h>.  The following patch at least allows Solaris bootstrap to
> continue:

The patch is looks good to me.

> diff --git a/libgfortran/intrinsics/erfc_scaled.c b/libgfortran/intrinsics/erfc_scaled.c
> +# ifndef M_2_SQRTPIl
> +#  define M_2_SQRTPIl 1.128379167095512573896158903121545172L
> +# endif
>
> I suppose the same should be done for M_2_SQRTPIq?

I don't think so. That's defined in libquadmath's quadmath.h, which is 
part of GCC.

Tobias