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Re: [Linphone-developers] Runtime Errors

From: Raghav Gururajan
Subject: Re: [Linphone-developers] Runtime Errors
Date: Fri, 03 Apr 2020 15:11:12 +0000

Hello Greg!

> Probably you know this, but the pthreads/mutex specs are pretty
> unforgiving. Many things, including destroying a locked mutex, are
> undefined behavior. Some systems seem to be set up to basically ignore
> those things, and somesystems seem to be set up to basically assert on
> undefined behavior. NetBSD used to assert, and then ran into too many
> problems with incorrect code that worked on Linux (and therefore did not
> get fixed), and I think we changed those to ignore.
> 1) you may have a runtime switch (env var) to control asserting vs
> reporting vs ignoring on undefined behavior. An example, perhaps useful
> only as a hint of what to look for:
> 2) it may be possible to add a breakpoint for that error case and figure
> out why the mutex wasn't unlocked before being destroyed.

Thanks so much for the detailed info. I will look into this. :-)

> (I don't know if this is fixed post 4.1.1.)

I think this commit 
 is the fix, but not sure.

Raghav Gururajan.

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