[Bug regex/11053] Wrong results with backreferences

["bonzini at gnu dot org" <sourceware-bugzilla at sourceware dot org>]

------- Additional Comments From bonzini at gnu dot org  2010-04-09 17:46 -------
Minimized testcases (same regex):

$ echo 8 | grep -E -e "$regex"
8          # >>> okay
$ echo 87 | grep -E -e "$regex"
Segmentation fault

$ echo 88 | grep -E -e "$regex"
88         # >>> okay
$ echo 887 | grep -E -e "$regex"
Segmentation fault

Also, everything I tried to feed that is of length 9 or higher and should not
match, gives either a false positive or a segfault:

$ echo 987654321 | grep -E -e "$regex"
887654321
$ echo 484635532 | grep -E -e "$regex"
484635532
$ echo 0123454321 | grep -E -e "$regex"
Segmentation fault
$ echo 0000123454321 | grep -E -e "$regex"
Segmentation fault


-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Segfault on invalid         |Wrong results with
                   |backreference               |backreferences


http://sourceware.org/bugzilla/show_bug.cgi?id=11053

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