Access violation when trying to load any scenario

[kevinburke]

When I try to load a scenario, I get "Access violation" and a message that the game is attempting to read memory location 0x00000 or 0x000007 or some such.

Stack trace goes from line 303 of RCT2_CALLPROC_EBPSAFE to line 229 of scenario_load_and_play (0x00684AC3) to window_title_scenarioselect.c.

[kevinburke]

commit 13d6fa5 lets me load scenarios; more recent commits do not.

[atmaxinger]

Strange, it works for me. Is there any way to reproduce this bug?

[anyc]

Hm, starting a new game and loading another from within a game works for me, too.

[kevinburke]

I just checked out the latest commit from master, ran "Rebuild solution", then "Local Windows Debugger" and I run into an access violation in scenario_load_and_play line 229.

Here are the contents of memory when the exception is triggered http://monosnap.com/image/08BvdJwSwVFAfYcf3nfmVoNMG2mhrB

[kevinburke]

Using binary search, the first non-working commit is this one: IntelOrca@27a5761

[atmaxinger]

Does this happen with every scenario? Africa - Victoria Falls is part of an expansion pack (which I don't have)

[kevinburke]

No, actually, it doesn't. The RCT2 game info I imported included several levels which I had already beaten (all the levels before Crazy Castle).

It's possible that something in the "completed by" dialog is causing the failure.

[kevinburke]

I've added an exception dump here: https://gist.github.com/kevinburke/b0184a79e8c30fb49f00

[duncanspumpkin]

I was also getting this bug. It was crashing on every scenario apart from the 6 flags ones. When i did my initial search i thought it was caused by this 27a5761 commit. Just having a quick look at that commit object_list.c Line 53 onwards shouldn't those address not overlap? (252_4 + 128_4) not (252*4).