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authorColin Snover2017-04-09 11:57:48 -0500
committerColin Snover2017-04-23 13:07:25 -0500
commit88f020c7d47b4e35a09e9cc1f2a5209acecb3a7e (patch)
tree59269116f05bb50a9b0d661bf2335c133a0d8b54 /devtools/tasmrecover
parent4d9b019b18e66f58a7cd88348dfbcd6bf6d93c79 (diff)
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SCI32: Fix out-of-bounds reads of truncated uncompressed cels
This happens e.g. on the About page in LSL7 because of an interpreter problem where bitmap handles are destroyed and then reused without a kFrameOut call to remove old screen items from the visible plane list before a kIsOnMe call that causes the engine to try to read from reused bitmap handles with different contents and dimensions. This replaces bad memory reads on the About page in LSL7 with an assertion failure, until the problem with the About page can be properly addressed.
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