waveform 9.0.39 beta and collective 1.1.7 beta have silence bug of left channel

[magicmusic]

I test the 1.1.7 and blue Pad work ok now. but i find another sound patch that drop out shortly. It seem the problem sit in the filter 1. with the sound 5th track WMF after few seconds of play, 1 channel go silent. to get it work again i need disable chorus and delay too, but when filter 1 stay switch off, then work ok longer time. so it seem filter 1 access some variable by random. maybe a buffer overflow so it trash variables or data of other effects data or buffers. see video. you can see too when filter 1 is on and delay and chorus is off, that he silent notes happen only with ferw notes and sound on left channel come back soon.

I notice the sound dropout happen not when filter 1 is enable and LP6 or LP12 is set. LP24 do the dropout

[Wolfram Franke]

Thank you for this invaluable short demonstration. So, I finally can see that the problem seems to be *created* by the LP24 filter and *maintained* by the Chorus. Will have a look into it.

Wolfram

[zzz00m]

This makes sense, as I was always able to get the audio to resume if I turned off one or more effects. Never could track down what was triggering the issue though.

[magicmusic]

Thank you for this invaluable short demonstration. So, I finally can see that the problem seems to be *created* by the LP24 filter and *maintained* by the Chorus. Will have a look into it.

Wolfram

good when it help,but maybe you can compile collective for test purpose with gcc options and do a compile all. maybe this show something more precise
-fsanitize=address Enable AddressSanitizer, a fast memory error detector. Memory access instructions are instrumented to detect out-of-bounds and use-after-free bugs.

-fsanitize=thread Enable ThreadSanitizer, a fast data race detector. Memory access instructions are instrumented to detect data race bugs.

https://gcc.gnu.org/onlinedocs/gcc/Inst ... tions.html

I get sometimes(not often) a total W crash when i change a sound preset in collective. and sometimes very rare it happen that only the open of collective window let W crash. maybe the dmp files are usefull too ?. the collective log show nothing. about the filter i notice that HP24 make problem too and if a LP24 or HP 24 is use in filter 2 and filter 1 is off make problem too

this is from waveform log
30 Mar 2018 10:30:41 Closing VST UI: Collective
30 Mar 2018 10:31:13 Opening VST UI: Collective

30 Mar 2018 10:31:50 Opening VST UI: Collective
30 Mar 2018 10:32:27 Crash Location: UnknownLocation
30 Mar 2018 10:32:27 Maintenance took: 11 ms
30 Mar 2018 10:32:27 Crash report created: C:\Users\testpc\AppData\Roaming\Tracktion\Waveform\Temporary\Crash Logs\Waveform 9.0.39 Crash Log 2018-03-30.dmp
30 Mar 2018 10:32:27 Crashed

[magicmusic]

Have you see in code of filter maybe something that can fail ?.

that whole waveform when select sounds crash happen in 9.1.1 too. logfile show more. there is space in logfile and next line show thread entries

9 Apr 2018 18:54:17 Opening VST UI: Collective
9 Apr 2018 18:54:45 Crash Location: UnknownLocation
9 Apr 2018 18:54:45 Maintenance took: 10 ms
9 Apr 2018 18:54:46 Crash report created: C:\Users\testpc\AppData\Roaming\Tracktion\Waveform\Temporary\Crash Logs\Waveform 9.1.1 Crash Log 2018-04-09.dmp
9 Apr 2018 18:54:46 Crashed
9 Apr 2018 18:54:46

9 Apr 2018 18:54:46 Thread 0:
9 Apr 2018 18:54:46 Thread 1: