Encoder crash for Stereo in pre_echo_att_ivas_fx()

Basic info

• Encoder: e1432023
• Decoder: N/A

Bug description

The fixed point encoder crashes with an assert:

Assertion failed: (0), function L_shl, file basop32.c, line 2582.

Ways to reproduce

Input vector has been uploaded.

The crash also occurs at 16.4 kbps.

./IVAS_cod_fx -stereo -max_band WB 13200 16 dm1aa1s08_16.10dB.wav bit