[Tcl-bugs] [ tcl-Bugs-3475667 ] [solved] access violation using -start greater as text len

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Bugs item #3475667, was opened at 2012-01-18 17:37
Message generated for change (Tracker Item Submitted) made by sebres
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Category: 43. Regexp
Group: current: 8.5.11
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: sebres (sebres)
Assigned to: Pavel Goran (pvgoran)
Summary: [solved] access violation using -start greater as text len

Initial Comment:
Problem Behavior: 
command "regexp" exception bug (Access Violation) executing folowing code:
<code>
   set s 590000
   regexp -start $s -indices {\s\m\S} [string repeat " " 580000] wortpos
<code>

Tcl Version: ALL KNOWN (solved in 8.5.11)
OS Platform: ANY

Comment: If could be not reproduced on some platforms, still more enlarge value of "s". On win32 could not be reproduced in debugger of visual studio, but in borland. 
On debian applies to both - release and debug.

Solution: see attached patch.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=110894&aid=3475667&group_id=10894