dm.exe silent crash on build

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ID:2338657

Jan 19 2018, 2:43 pm (Edited on Jan 19 2018, 3:50 pm)

Pseudonym

Resolved

Lack of sanity checking in some map handling routines caused the compiler to crash in some rare cases.

BYOND Version:	512.1403
Operating System:	Windows 10 Pro
Web Browser:	Chrome 63.0.3239.132
Applies to:	Dream Maker

Status:

Resolved (512.1405)

This issue has been resolved.

Descriptive Problem Summary:
dm.exe will silently crash on build and exit with error code 123 with no errors output to the console.
Numbered Steps to Reproduce Problem:
1. Download https://github.com/DamianX/vgstation13/archive/ fc5bd6fb41f995837cde7f07db8a3cf936cc1cca.zip
2. Use dm.exe to build the project.
3. A short time after "loading tgstation.dmm" it will silently crash.
Code Snippet (if applicable) to Reproduce Problem:

Expected Results:
Build.
Actual Results:
Silent crash on build.

This problem occurs on both Linux and Windows.
Linux build via Travis: https://travis-ci.org/vgstation-coders/vgstation13/builds/ 330997771#L742

We have been unable to find a workaround for this, as we cannot even diagnose the problem. It seems to work on at least one of our other maps (test_tiny.dmm).

Jan 19 2018, 3:42 pm
MrStonedOne	Could not reproduce on 512.1404 (or 512.1403) https://gist.github.com/MrStonedOne/ 6995943127dc9cadec117892ba13a6f6 How ever one thing I noticed it is not actually getting to the stage where it loads the map. loading tgstation.dmm never prints but i can confirm the loader for it is checked in the dme. Were these errors last minute additions from something getting unchecked?

Jan 19 2018, 3:49 pm
Pseudonym	Whoops, wrong zip. I'll update the OP as well. https://github.com/DamianX/vgstation13/archive/ fc5bd6fb41f995837cde7f07db8a3cf936cc1cca.zip

Jan 19 2018, 3:55 pm

MrStonedOne

Faulting application name: dm.exe, version: 5.0.512.1404, time stamp: 0x5a6257b2
Faulting module name: byondcore.dll, version: 5.0.512.1404, time stamp: 0x5a6257b2
Exception code: 0xc0000005
Fault offset: 0x0008a8bf
Faulting process id: 0x2e00
Faulting application start time: 0x01d391783a7badf0
Faulting application path: c:\Program Files (x86)\BYOND\bin\dm.exe
Faulting module path: c:\Program Files (x86)\BYOND\bin\byondcore.dll

Jan 23 2018, 2:29 am
DamianQ	Any update on this?

Jan 25 2018, 2:40 pm (Edited on Jan 25 2018, 2:50 pm)

Lummox JR

When running this through the debugger I found it ran out of memory but didn't throw an exception. I'm adding some sanity checking there but it's possible memory is the issue. The debugger tends to exacerbate such things, though, so I'll keep testing and also try a release mode test.

[edit]
On a subsequent run I got no memory errors, but did get a crash in the map handling. I believe that explains your crash and will have that fixed in the next release.

Jan 25 2018, 2:56 pm

Lummox JR

BTW, the error I get when this is fixed is this:

maps\tgstation.dmm:12900:error: undefined map symbol: "bBC"

Failed to load map file [path]\vgstation13-fc5bd6fb41f995837cde7f07db8a3cf936cc1cca\maps\tgstation.dmm.vgstation13.dmb - 1 error, 0 warnings (1/25/18 4:55 pm)

So there's a problem in your map file, and that's triggering a bug.

Jan 25 2018, 2:58 pm
Lummox JR	Lummox JR resolved issue with message: Lack of sanity checking in some map handling routines caused the compiler to crash in some rare cases.