### Basic Info - Commit SHA: 6ff99c98efc6107548ccf07de60ff66339af1b46 ### Bug description Clang 18 MSAN found an use-of-uninitialized-value error at lib_enc/ivas_dirac_enc_fx.c:1590:30: ``` ==20024==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x55dddacaf463 in computeDiffuseness_mdft_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_dirac_enc_fx.c:1590:30 #1 0x55dddac9d596 in ivas_dirac_param_est_enc_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_dirac_enc_fx.c:1217:13 #2 0x55dddac92932 in ivas_dirac_enc_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_dirac_enc_fx.c:347:5 #3 0x55ddda4c42f7 in ivas_spar_enc_process_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_spar_encoder_fx.c:865:5 #4 0x55ddda4bf336 in ivas_spar_enc_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_spar_encoder_fx.c:403:5 #5 0x55ddda26e1d7 in ivas_enc_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_enc_fx.c:263:13 #6 0x55ddda120675 in IVAS_ENC_EncodeFrameToSerial /builds/rep/sa4/audio/ivas-basop/lib_enc/lib_enc_fx.c:1502:13 #7 0x55ddda0ff94a in main /builds/rep/sa4/audio/ivas-basop/apps/encoder.c:877:28 #8 0x7fec8f9f31c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #9 0x7fec8f9f328a in __libc_start_main csu/../csu/libc-start.c:360:3 #10 0x55ddda05f454 in _start (/builds/rep/sa4/audio/ivas-basop/IVAS_cod+0x38454) (BuildId: 8fd000be54ac410bba001621c9b72a8d8aed4cf6) SUMMARY: MemorySanitizer: use-of-uninitialized-value /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_dirac_enc_fx.c:1590:30 in computeDiffuseness_mdft_fx ``` ### How to reproduce :warning: Make sure to use CLANG v18 for building the codec :warning Build with ``` make clean make -j CLANG=1 ``` Then run ``` IVAS_cod -max_band scripts/testv/ivas_bws_20fr_start_WB.txt -sba 2 384000 32 scripts/testv/stv2OA32c.wav stv2OA32c.wav_SBA_2OA_at_384_kbps_32kHz_in_32kHz_out_STEREO_out_bandwidth_switching.192 ``` or ``` python3 -m pytest "test_param_file_tests[stv-SBA 2OA at 384 kbps, 32kHz in, 32kHz out, STEREO out, bandwidth switching]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec ```