[mythtv-users] mac build

[James Linder]

> On 6 Feb 2021, at 11:03 am, James Linder <jam at tigger.ws> wrote:
> 
> 
> 
>> On 6 Feb 2021, at 10:19 am, James Linder <jam at tigger.ws> wrote:
>> 
>> 
>> 
>>> On 6 Feb 2021, at 1:37 am, John Hoyt <john.hoyt at gmail.com> wrote:
>>> 
>>> On Fri, Feb 5, 2021 at 12:23 PM Mark Kendall <mark.kendall at gmail.com> wrote:
>>> So I finally managed to fix some storage problems on my server and
>>> added 10074_20210123140800.ts to my videos, built a seek table for it
>>> it and started to investigate.
>>> 
>>> Start editing and there is obvious garbage data in the audio graph
>>> after some seeks and a little extra logging shows that
>>> AudioOutputGraph is indeed going 'out of bounds'. Still trying to work
>>> out the exact root cause but the symptoms are an easy fix - so should
>>> be sorted in a few days (and yes - I'll backport to fixes/31).
>>> 
>>> Thanks for looking into this Mark!

An observation that may be of use here:

Out of the debugger the HD movie I recorded in the rain core dumps often
In the debugger (lldb) I hardly ever core dump
In linux the Edit->cut>move core dump never happens

In my experience a pointer that has gone awry:
Valid pointer -> my address space
Invalid pointer (debugger)-> somewhere in my address space
Invalid pointer (no debugger)-> outside my address space so core dump

linux: invalid-> somewhere in my address space
mac: invalid-> outside my address space

(all the above just by chance)
The visulation garbage supports this argument

James