#5781 closed defect (fixed)
DREAMWEB: Crash when inserting key
| Reported by: | tsoliman | Owned by: | SF/megath |
|---|---|---|---|
| Priority: | normal | Component: | Engine: Dreamweb |
| Version: | Keywords: | ||
| Cc: | Game: | Dreamweb |
Description
scummvm: ../engines/dreamweb/runtime.h:469: void DreamGen::Context::_movsb(uint, bool): Assertion `src < dst || src >= dst + size' failed.
Linux self compiled git revision 4b51bef
To reproduce, load attached save and use key in plinth
Ticket imported from: #3339530. Ticket imported from: bugs/5781.
Attachments (1)
Change History (14)
by , 13 years ago
| Attachment: | DREAMWEB.D00 added |
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comment:1 by , 13 years ago
Also the same crash after robbery in louis flat and after taking sneakers. I removed workaround, because it corrupts the game state. Still investingating :)
comment:2 by , 13 years ago
| Owner: | set to |
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comment:4 by , 13 years ago
If it's caused by replacing a rep movsb by a memcpy, shouldn't we then just not be using memcpy for overlapping regions there? (But a simple loop instead?)
comment:5 by , 13 years ago
I guess it's a bug, removing assert or replacing with movsb() corrupts game state and sometime trashes inventory. I'm not 100% sure though.
comment:6 by , 13 years ago
hmmm, wjp, I guess you're right. I disabled memcpy for overlapping regions and louis and this key crash does not reproduce! Thank you. I'll commit the fix right away
comment:8 by , 13 years ago
| Resolution: | → fixed |
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comment:9 by , 13 years ago
Maybe I'm missing something obvious but if the problem is overlapping memory areas, couldn't we just change memcpy() to memmove()?
comment:10 by , 13 years ago
That would probably work in all actually used cases, but a rep movsb isn't always equivalent to a memmove. (Not when copying forward with overlap.)
comment:12 by , 13 years ago
| Status: | new → closed |
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comment:13 by , 12 years ago
| Component: | → Engine: Dreamweb |
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| Game: | → Dreamweb |
savegame: Use plinth and select key