02126: corrupt CHDs are reported as missing

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
02126	Core	Feature	Always	Aug 17, 2008, 21:40	Aug 22, 2008, 02:40

Tester	Firewave	View Status	Public	Platform	MAME (Self-compiled)
Assigned To	aaron	Resolution	Fixed	OS	Windows XP/Vista 64-bit
Status [?]	Resolved			Driver
Version	0.126u5	Fixed in Version	0.127u1	Build	Debug
		Fixed in Git Commit		Github Pull Request #

Summary	02126: corrupt CHDs are reported as missing
Description	I have a corrupt hellngt CHD, that is reported as missing. The "corruption" is, that it's just 360 MB short of the real one. A simple clrmamepro scan will report it as correct (as it just checks the headers and not the complete file). It is quite misleading as you don't know what's wrong with the file. It should indicate, that there was a problem reading it.
Steps To Reproduce
Additional Information
Github Commit

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No.02109 RansAckeR Tester Aug 18, 2008, 09:21	I remember I once had a corrupt zip (roms) file, which allowed me to start and run the game. Offcourse there were problems with the game, but I had no clue what the cause was. I would've expect mame to report such problem. Perhaps this should be extended to the zips/roms if possible?
No.02110 Firewave Senior Tester Aug 18, 2008, 11:47	I also thought about roms when making the report, but I wanted to stick with the issue I got and maybe look into it later. I think any kind of decompression errors should be reported to the user (IIRC zlib reports CRC issues and other stuff, but you still have an extracted file to work with).