06638: Exception when using -debug

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
06638	Crash/Freeze	Critical (emulator)	Always	Jul 31, 2017, 13:05	Aug 9, 2017, 13:36

Tester	Tafoid	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Fixed	OS	Windows Vista/7/8 (64-bit)
Status [?]	Resolved			Driver
Version	0.188	Fixed in Version	0.193	Build
		Fixed in Git Commit		Github Pull Request #

Summary	06638: Exception when using -debug
Description	The following sets/drivers exception when using -debug either before the debug window starts or as soon as you begin execution: Sets using HD44801 in champbas.cpp (exctsccr, talbot, champbasj, etc) Exception at EIP=00000000035942b0 (crc32_little+0x0080): ACCESS VIOLATION -- Sets using HD44801 in equites.cpp (equites, gekisou, hvoltage, etc) Exception at EIP=00000000035942b0 (crc32_little+0x0080): ACCESS VIOLATION -- gamt16b - gamtor.cpp Exception at EIP=00000000033aef37 (d68000_ori_8()+0x0027): ACCESS VIOLATION -- All sets in hh_hmcs40.cpp Exception at EIP=0000000003594376 (crc32_little+0x0146): ACCESS VIOLATION -- speeddrv - igspc.cpp Exception at EIP=000000000338ebb4 (i386_dasm_one(std::ostream&, unsigned int, unsigned char const*, int)+0x00c4): ACCESS VIOLATION -- instruct - instruct.cpp Exception at EIP=00000000033f6fd3 (ADR(int)+0x0033): ACCESS VIOLATION -- All sets in shougi.cpp Exception at EIP=00000000035942b0 (crc32_little+0x0080): ACCESS VIOLATION
Steps To Reproduce
Additional Information	Likely regression commit: https://github.com/mamedev/mame/commit/8d2a1d4268e86fc20d9807df9dfe00ea1fb66b37
Github Commit

Flags
Regression Version	0.188
Affected Sets / Systems

Attached Files

No.14075 Robbbert Senior Tester Aug 6, 2017, 03:32 edited on: Aug 6, 2017, 03:33	Tested, they all work for me except: gamt16b: crash as per the report speeddrv: i don't have the chd shougi2.cpp doesn't exist.
No.14081 Tafoid Administrator Aug 6, 2017, 19:57	instruct as well still crashes when using -debug
No.14087 Osso Moderator Aug 7, 2017, 13:17	gamt16b: the cpu core doesn't seem to cope well with the first program ROM being a NO_DUMP. Changing ROMREGION_ERASEFF to ROMREGION_ERASE00 avoids the crash, but it isn't a real fix.
No.14088 Robbbert Senior Tester Aug 9, 2017, 13:36	Instruct works fine here with -debug. (32-bit build)