Hello,

> On Wed, Sep 5, 2018 at 12:32 AM Assaf Gordon <assafgordon@gmail.com> wrote: >>>> On 04/09/18 07:02 PM, Saito Takaaki wrote:>>> 
https://ideone.com/Sq5xJX>>>>>> I hope this helps even a bit.>>>> The 
linked snippet you provided exposed a heap-use-after-free bug
>> in gnulib's regex module (possibly in glibc as well).

Please find the attached patch as a suggested fix.

Comments and review very welcomed,
  - assaf