Help investigate QB64 crashing under specific conditions for one certain user

[FellippeHeitor]

A user on GitHub opened an issue in the repository stating that QB64 crashes in Windows 7 SP1 x64 on Intel i7-3610QM cpu, under these exact conditions/steps:

Downloaded qb64 1.2 (as already stated)
2a. Started qb64 from command prompt as administrator
or
2b. Started qb64 directly with double-clicking on the executable

Ran this code (as already stated):

Code: QB64: [Select]

1. 10 ON ERROR GOTO 60
2. 20 PRINT 2/3
3. 30 PRINT 3/5
4. 40 PRINT 4/0
5. 50 END
6. 60 IF ERR=11 THEN PRINT "Division by zero in line"ERL:RESUME 50

DEP is completely disabled, also no antivirus/antimalware software installed
Above steps were performed also and on a Win XP SP2 x64/Win 10 Pro x64 virtual machines with the same result

Full discussion going on here: https://github.com/Galleondragon/qb64/issues/64

DEP stands for Data Execution Prevention, as per this: https://answers.microsoft.com/en-us/windows/forum/windows_other-windows_programs/problem-event-name-bex-error-message/cf5baf73-0877-4070-abfb-a2c3a17a9e10

Can you guys please confirm this happens too or has happened before under the same conditions? I can't reproduce it on any of my machines.

[SMcNeill]

I've tested both 32-bit and 64-bit versions of QB64, and I can't reproduce the issue, but I'm running Win 10 instead of Win 7, so I dunno if that's part of the problem or not.

[FellippeHeitor]

Well, he said he'd tested it on Windows 10, x64, with the crashing happening too. Are you on a 64bit system?

[SMcNeill]

Well, he said he'd tested it on Windows 10, x64, with the crashing happening too. Are you on a 64bit system?

Aye.  Win 10, 64-bit, and no issues for me.

[SMcNeill]

Oddly enough, I can't even generate an error with the program.  I'm not getting a "Division by 0" error; QB64 is reporting 4 / 0 as being 1.#INF for me...

Further testing going on...

[FellippeHeitor]

It is by design not to get some division by zero errors. I remember Luke adding something related to SIGFPE in order to avoid such crashes.

I'm putting my money on a faulty graphics adapter or something of that kind, since we have seen it happen recently for another guy who realized it was that on his machine.

I'm now waiting for him to confirm that it also happens with the stable build to rule out anything that has been added recently to the development build.

[SMcNeill]

10 ON ERROR GOTO 60
20 PRINT 2 / 3
30 PRINT 3 / 5
40 PRINT 4 / 0
45 ERROR 11
46 PRINT "bob"
50 END
60 PRINT ERR, ERL, _ERRORLINE: IF ERR = 11 THEN PRINT "Division by zero in line"; ERL: RESUME NEXT


Here's another bit of oddity:  I cant even FORCE QB64 to toss an Error 11.  Trying results in Windows popping up the "Critical Error Divison by 0" message box, and closing it insta-crashes the program.  ON ERROR isnt catching Divison by 0, even when I try and force it to, though other error codes work just fine for us.

I have no clue how the guy is getting system errors, since it seems like the program is basically just a few PRINT commands, with the other stuff doing nothing in this case.

[bplus]

OK Windows 10 64 same as Steve.

[Cobalt]

doesn't crash for me on Win 7 SP1, 64bit, with an Intel I3 dual core with hyperthreading.
with the x32 build of QB64.

does pop an error if I flip the '/' to a '\' in line 40 but doesn't crash.

[Pete]

I run Win 7 64-bit and it works fine for me. I get what Steve gets on his Win 10.

Using computers today is a genuine pain in the ASCII. Too many different setups and things that for some damn reason or another tend to interfere with other things. I just got through installing a program that was supposed to work with Win 7, but I'm smart enough to realize the driver it states is missing is a Windows 10 specific driver, with 7 having an earlier version. Although I could install it on my Win-10, I hate Win 10 because it always gets MS updates. Anyway, I'm sure we all have our similar stories of crosses to bear, and I'm afraid the OP in this thread will have to work around this problem.

Pete

If I could save time in a bottle, then where in the hell would I keep my liquor?

[TerryRitchie]

Code runs fine on my system. I have almost the same specs:

Win7 SP1 Pro x64 - Intel Core i7 3770 @ 3.40GHz

[Pete]

Besides, It's stupid code NOBODY should be using anyway!!!

Sorry, watching a YouTube video on self-hypnosis and apparently channeling Clippy.

Pete :D

[TerryRitchie]

Now there's a name I have not heard in a while. What the heck is he up to these days?

[Pete]

He made a post at the Tapatalk (former N54 ) forum a couple of weeks ago but ever since Trump got elected he's been kind of quite. Me, on the other hand, I've been throwing parties, handing out cigars, and turning cartwheels.

Pete

[TerryRitchie]

LOL