[Tcl-bugs] [ tcl-Bugs-840258 ] "can't happen" -- you found a bug

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Bugs item #840258, was opened at 2003-11-12 02:53
Message generated for change (Comment added) made by pvgoran
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=110894&aid=840258&group_id=10894

Category: 42. Regexp
Group: current: 8.4.4
>Status: Closed
>Resolution: Duplicate
Priority: 5
Submitted By: Jonathan Jones (jej1997)
Assigned to: Pavel Goran (pvgoran)
Summary: "can't happen" -- you found a bug

Initial Comment:
Tcl Version: 8.4.4
OS: Win 2k Pro
Problem behavior:

The command

   regsub {(^|\n)+\.*b} \n.b "" tmp

generates the above error message.

Here's another case that may or may not be due to the 
same bug.  I don't have time to distill it down to the 
minimum-sized test:

set eventRegexp {(^|[\n\r]+)\.*\?<.*?(\n|\r)+}
set _results_queue "TQ\r\n.?<5000267>Test already 
stopped\r\n"
regsub $eventRegexp $_results_queue {} _results_queue

Your efforts are appreciated.

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>Comment By: Pavel Goran (pvgoran)
Date: 2003-11-16 00:06

Message:
Logged In: YES 
user_id=383758

The cause of (and the resolution for) this bug is the same as 
for bug 505048.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=110894&aid=840258&group_id=10894