### Basic info - Commit SHA: 5e0a9b77b693a7e691620e61b4c22b7291a97bd7 - Platform: Linux, Windows ### Bug description Valgrind reports reading of uninitialized memory in the TCX arithmetic coder (RCcontextMapping_encode2_no_mem_s17_LCS()). Occurs in frame #965. Output: ``` ==1892421== Use of uninitialised value of size 8 ==1892421== at 0x1C5D9E: RCcontextMapping_encode2_no_mem_s17_LCS (ACcontextMapping_enc.c:892) ==1892421== by 0x1EDF5E: writeTCXparam (enc_prm.c:563) ==1892421== by 0x1553D8: ivas_mdct_quant_coder (ivas_mdct_core_enc.c:1304) ==1892421== by 0x14EDB3: ivas_mct_enc (ivas_mct_enc.c:142) ==1892421== by 0x135C67: ivas_enc (ivas_enc.c:266) ==1892421== by 0x11702C: IVAS_ENC_EncodeFrameToSerial (lib_enc.c:1127) ==1892421== by 0x10E95A: main (encoder.c:724) ==1892421== ``` ``` while ( x[lastnz - 1] == 0 && x[lastnz - 2] == 0 ) { lastnz -= 2; } ``` for `lastnz == 960`, `cpe_id == 0`, `ch == 0`. ### Ways to reproduce Commandline: ./IVAS_cod -sba +3 -max_band FB 384000 48 14_multi_source_dry_22p2_48k-hoa_HOA3_norm.wav out.bit <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary. -->