[ scummvm-Bugs-1033857 ] SCUMM: Invalid write when drawing charset to background

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Bugs item #1033857, was opened at 2004-09-24 17:53
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Category: Unknown Crash/Other
Group: Unknown
Status: Open
Resolution: None
Priority: 5
Submitted By: Travis Howell (kirben)
Assigned to: Max Horn (fingolfin)
Summary: SCUMM: Invalid write when drawing charset to background

Initial Comment:
Latest ScummVM cvs version.
Compiled under mingw with GCC 3.4.1 and running under 
Windows XP.

I noticed ScummVM crashes during the scrolling credits, 
at the end of HE72+ games. I tried running ScummVM 
under valgrind and it reports several invalid writes in 
charset code. Around the point of scumm/charset.cpp 
where comments mention code might be broken.
Adding bug report since it looks like general issue in 
ScummVM and not a bug specific to the currently 
unsupported HE 72+ games.

Attached gdb backtrace and valgrind log. Also a 
screenshot of scrolling credits in a HE game in case it 
helps too.

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