Encoder crash for Stereo at 32kbps in PostShortTerm_ivas_enc_fx()

Basic info

• Float reference:
  • Encoder (float):
  • Decoder (float):
• Fixed point:
  • Encoder (fixed): 3d9faa50
  • Decoder (fixed):

Bug description

The fixed point encoder crashes with an assert:

Assertion failed: (0), function saturate, file basop32.c, line 510.

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1155

./IVAS_cod_fx -q -stereo -max_band SWB 32000 32 stereo-noisy_speech-p800-2-cat1-lab_d-20ms_aligned_files_concatenated_32.wav bit

If -dtx is added to the commandline above, the other assertion is hit in saturate().