Bug#893676: hurd: internal compiler error building petsc

[Samuel Thibault <sthibault@debian.org>]

Drew Parsons, on mer. 21 mars 2018 12:44:03 +0800, wrote:
> The build of PETSc 3.8 triggers an internal compiler error on hurd:
> 
>             CC i386-gnu-complex/obj/src/vec/vec/interface/vector.o
>   ../../src/init2.c:52: MPFR assertion failed: p >= 2 && p <= ((mpfr_prec_t)((mpfr_uprec_t)(~(mpfr_uprec_t)0)>>1))
>   /<<BUILDDIR>>/petsc-3.8.3+dfsg1/src/vec/vec/interface/vector.c: In function 'VecSetInf':
>   /<<BUILDDIR>>/petsc-3.8.3+dfsg1/src/vec/vec/interface/vector.c:1860:1: internal compiler error: Aborted
>    }

Well, perhaps it's just because the current version of gcc-7 isn't
built.

Samuel