[Buildroot] [PATCH] gcc: Fix building on ppc64le GCC 8 host

[Peter Korsgaard <peter@korsgaard.com>]

>>>>> "Joel" == Joel Stanley <joel@jms.id.au> writes:

 > When building on a ppc64le host we see this error:
 >     build/genmatch --gimple ../../gcc/match.pd \
 >> tmp-gimple-match.c
 >     ../../gcc/match.pd:120:1 error: expected (, got NAME
 >        negative value by 0 gives -0, not +0.  */

 > This was reported upstream[1] and fixed on the GCC 6 [2] and GCC 7 [3]
 > branches:

 >     Backport from mainline
 >     2018-01-10  Kelvin Nilsen  <kelvin@gcc.gnu.org>

 >     * lex.c (search_line_fast): Remove illegal coercion of an
 >     unaligned pointer value to vector pointer type and replace with
 >     use of __builtin_vec_vsx_ld () built-in function, which operates
 >     on unaligned pointer values.

 > The patches included in Buildroot contain just the code changes, and not
 > the changelog, to make it easer to manage backporting.

 > Tested on Ubuntu Cosmic ppc64le.

 > [1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86162
 > [2] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=261621
 > [3] https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=262243

 > Signed-off-by: Joel Stanley <joel@jms.id.au>

Committed to 2018.02.x and 2018.05.x, thanks.

-- 
Bye, Peter Korsgaard