I was of the impression that these bugs had been forwarded, but I seem
to have been wrong.
echo abc | egrep '(.*)(.*)(.*)\3\2\1'
grep: regexec.c:1363: pop_fail_stack: Assertion `num >= 0' failed.
Aborted
See also the following reports:
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=186568
Package: grep
Version: 2.5.1.ds1-4
Severity: normal
I was under the impression that I had reported this bug long ago, and
that it had been fixed after some time, but I haven't been able to find
it in the BTS, so I guess I was wrong.
Using back references as in the expression:
'^(.?)(.?)(.?)(.?).\
2 matches
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