Decoder crash for ISM 3 FER, Bandwidth Switching at 96kbps, 128 kbps

Basic info

• Encoder (float): d18cbee3 (ivas-float-update)
• Decoder: 9bae8e35 (current main)

Bug description

A decoder crash is observed for ISM +3 test case with FER10% error pattern with a bandwidth switching profile.

The crash is specific to this error pattern and test vector, occurring at bitrates 96kbps and 128 kbps DTX on and off, and at 64kbps DTX off.

It does not occur at 256 kbps.

Crash is present in current main.

Ways to reproduce

The bitstream: https://dolby.box.com/s/zv8f7e7cffi0uriudhqjb9qlmp3bo6dx

./IVAS_cod_ref.exe -max_band input/ivas_bws_20fr_start_SWB.txt -ism +3 input/testISM3a.0.csv input/testISM3a.1.csv input/testISM3a.2.csv 96000 48 input/testISM3a48.wav bit

eid-xor -fer -vbr -bs g192 -ep g192 bit input/fer10%.192 bit_error

./IVAS_dec.exe BINAURAL 48 bit_error outIsm3.wav

Crash occurs around frame 342.