[Buildroot] [PATCH] flex: fix segfaults on glibc-2.26

[Arnout Vandecappelle]

On 26-09-17 14:39, Alex Suykov wrote:
> Version 2.26 of glibc no longer exports prototype for reallocarray
> unless _GNU_SOURCE is defined. With no prototype, gcc assumes int
> return type and truncates the pointer to 32bit on 64bit systems.
> 
> This shows up as segfault in stage1flex while building host-flex
> on glibc-2.26 based 64-bit host systems.
> 
> The patch is taken as is from LEDE-project:
> https://github.com/lede-project/source/commit/0fb14a2b1ab2f82ce63f4437b062229d73d90516
> 
> Signed-off-by: Alex Suykov <alex.suykov at gmail.com>

 This is essentially http://patchwork.ozlabs.org/patch/813474/ but with the
reference to LEDE and without the fix of the documentation patch. Could you
merge the two versions?

 Regards,
 Arnout

[snip]
-- 
Arnout Vandecappelle                          arnout at mind be
Senior Embedded Software Architect            +32-16-286500
Essensium/Mind                                http://www.mind.be
G.Geenslaan 9, 3001 Leuven, Belgium           BE 872 984 063 RPR Leuven
LinkedIn profile: http://www.linkedin.com/in/arnoutvandecappelle
GPG fingerprint:  7493 020B C7E3 8618 8DEC 222C 82EB F404 F9AC 0DDF