02771: all ddragon3.c, shadfrce.c and wwfsstar.c sets: [debug] Assertion

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
02771	Crash/Freeze	Critical (emulator)	Always	Dec 25, 2008, 13:53	Dec 26, 2008, 06:56

Tester	Firewave	View Status	Public	Platform	MAME (Self-compiled)
Assigned To	Mamesick	Resolution	Fixed	OS	Windows XP/Vista 64-bit
Status [?]	Resolved			Driver
Version	0.128u7	Fixed in Version	0.129	Build	Debug
		Fixed in Git Commit		Github Pull Request #

Summary	02771: all ddragon3.c, shadfrce.c and wwfsstar.c sets: [debug] Assertion
Description	assert: src/emu/video.c:801: scanline >= 0
Steps To Reproduce
Additional Information
Github Commit

Flags	Debug build specific
Regression Version	> 0.128u3
Affected Sets / Systems	all ddragon3.c, shadfrce.c and wwfsstar.c sets

Attached Files

No.03395 Atari Ace Senior Tester Dec 25, 2008, 15:42	You can 'fix' this by changing wwfsstar_scanline to return for scanline == 0, but the same problem appears to be in ddragon3_scanline, shadfrce_scanline, wwfwfest_interrupt as well. FYI, the end of those routines adjusts for wraparound, but only on the local variable so they don't do anything and can be dropped.
No.03396 Firewave Senior Tester Dec 25, 2008, 16:27	Indeed. It also happens with all sets in ddragon3.c and shadfrce.c.
No.03397 Mamesick Senior Tester Dec 25, 2008, 19:09	Fix submitted for all drivers affected. It was an ingenuity in my code. I'm glad it surfaced so soon.