Your bug report

#15758: grep 2.15 calls abort() on larger searches with -P

which was filed against the grep package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 15758@debbugs.gnu.org.

-- 
15758: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=15758
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