Opus.lib: 1.3.1 version crashing in some windows machines in opus_encoder_create

[Preethiravi196]

Hi, I have an application that captures and streams audio over a websocket connection. Before sending over websocket, audio data is encoded using OPUS. This application works in most of the devices, where in some devices it crashes with the error in windows event viewer.

Using Windows Error Reporting, I was able to capture the dump and found that error occurs in the below segment of code with 0xC000001D: Illegal Instruction exception,

OpusEncoder* encoder = opus_encoder_create(Sample_rate , channel_count , app_type , &err);

I have compiled the lib in visual studio 2019 compiler with with no enhanced instruction set option and platform toolset: Visual Studio 2017.

Issue was observed in the devices with below proccessors,

• intel xeon processor x5690
• intel xeon processor x5560
• intel64 family 6 model 158 stepping 10 genuineintel 2112 mhz

[xnorpx]

You don't give any information what buildsystem is used. But there was an avx2 bug in cmake for windows in early 1.3.1. So you could upgrade to a later Opus version or turn off intrinsics or patch the cmake scripts to remove the avx2 flags.

[Preethiravi196]

Using 1.4 opus built in SSE2 instruction set configuration does not make the application crash. Thanks for your inputs.