Your bug report

#16499: GNU grep-2.16-1.mga4 , grep-2.16 from sources and grep from git master HEAD get stuck during an LC_ALL=en_US.UTF-8 search inside a short binary file

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 16499@debbugs.gnu.org.

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16499: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=16499
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