bug#32592: heap-use-after-free in regex module

[Paul Eggert]

Assaf Gordon wrote:
> Speaking of coincidences,
> I just found this use-after-free bug was already reported (but not fixed)
> back in 2015:https://sourceware.org/bugzilla/show_bug.cgi?id=18040  .

Thanks, I had looked for a duplicate bug report before filing glibc bug 23609 
but did not find that one. I have added notes to glibc bugs 18040 and 23609 
suggesting that they be merged (which is apparently not something I can do via 
the web UI).