Bug 922 – Some VST plugins crash/freeze Audacity when playback reaches end of selection

••• Introduction •••
••• Keywords •••

Audacity 3.0.3 development began 19th April 2021

Bug 922 - Some VST plugins crash/freeze Audacity when playback reaches end of selection


Summary:	Some VST plugins crash/freeze Audacity when playback reaches end of selection

Status:	RESOLVED QUICKFIXED

Product:	Audacity
Classification:	Unclassified
Component:	VST
Version:	2.1.1
Hardware:	PC Windows (all)

Importance:	P2 Repeatable
Assigned To:	Default Assignee for New Bugs

URL:
Keywords:

Depends on:
Blocks:	665
	Show dependency tree / graph

Reported:	2015-04-23 19:25 UTC by Gale Andrews
Modified:	2018-08-20 11:45 UTC (History)
CC List:	6 users (show)

See Also:
Steps To Reproduce:	1 Obtain the following plugins: Erzatz from http://www.vst4free.com/free_vst.php?plugin=Erzatz&id=1631 and Echomania from http://www.vst4free.com/free_vst.php?id=564 and place them in a supported path. 2 Add some audio (mono or stereo does not matter) and make a selection. 3 Open the effect and play, waiting until playback comes to an end. The Play button in Transport Toolbar does not release. At this point, Audacity crashes (Erzatz) or freezes on 100% CPU (Echomania).
Release Note:	// See bug 665
First Git SHA:
Group:	---
Workaround:
Closed:	2018-08-20 00:00:00

Attachments
Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.

Description Gale Andrews 2015-04-23 19:25:14 UTC

Set as P2 because if two different plugins do this, there may be a systemic problem.

Comment 1 Leland Lucius 2015-04-27 21:21:26 UTC

The effects didn't like be called with a zero length block.

Fixed in a24adb5

Comment 2 Gale Andrews 2015-04-30 23:55:56 UTC

Thanks, Leland. 

This problem exists in 2.1.0 Release (even though it wasn't known then) so I removed the "was_fixed_quick" keyword.

Comment 3 Gale Andrews 2015-04-30 23:57:16 UTC

Leant on Status by mistake - it is fixed.

Comment 4 James Crook 2015-06-20 17:26:25 UTC

FIXED->QUICKFIXED