### Basic Info - Commit SHA: c8a3c65fd7845e68e5d31bea2b679ae146cd04ab ### Bug description Clang 18 MSAN found an use-of-uninitialized-value error at lib_com/tools_fx.c:1354:16: ``` ==20063==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x564cb225c280 in Copy_Scale_sig_16_32_DEPREC /builds/rep/sa4/audio/ivas-basop/lib_com/tools_fx.c:1354:16 #1 0x564cb11121fc in stereo_mdct_core_dec_fx /builds/rep/sa4/audio/ivas-basop/lib_dec/ivas_stereo_mdct_core_dec_fx.c:392:9 #2 0x564cb18aeb9d in ivas_core_dec_fx /builds/rep/sa4/audio/ivas-basop/lib_dec/ivas_core_dec_fx.c:719:17 #3 0x564cb18dc3b4 in ivas_cpe_dec_fx /builds/rep/sa4/audio/ivas-basop/lib_dec/ivas_cpe_dec_fx.c:585:9 #4 0x564cb0cb0b28 in ivas_dec_fx /builds/rep/sa4/audio/ivas-basop/lib_dec/ivas_dec_fx.c:102:9 #5 0x564cb0942f87 in IVAS_DEC_GetSamplesDecoder /builds/rep/sa4/audio/ivas-basop/lib_dec/lib_dec_fx.c:3902:13 #6 0x564cb08e7713 in decodeG192 /builds/rep/sa4/audio/ivas-basop/apps/decoder.c:2275:32 #7 0x564cb08cb887 in main /builds/rep/sa4/audio/ivas-basop/apps/decoder.c:671:17 #8 0x7f76c10dc1c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #9 0x7f76c10dc28a in __libc_start_main csu/../csu/libc-start.c:360:3 #10 0x564cb082d484 in _start (/builds/rep/sa4/audio/ivas-basop/IVAS_dec+0x3b484) (BuildId: b0c73d27f2419ced8d5206cdc23f0fa11c59f81c) SUMMARY: MemorySanitizer: use-of-uninitialized-value /builds/rep/sa4/audio/ivas-basop/lib_com/tools_fx.c:1354:16 in Copy_Scale_sig_16_32_DEPREC ``` ### 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 -stereo 128000 16 scripts/testv/stvST16c.wav stvST16c.wav_stereo_at_128_kbps_16kHz_in_16kHz_out_random_FER_at_10_.192 scripts/tools/Linux/eid-xor -fer -vbr -bs g192 -ep g192 stvST16c.wav_stereo_at_128_kbps_16kHz_in_16kHz_out_random_FER_at_10_.192 scripts/dly_error_profiles/ep_10pct.g192 stvST16c.wav_stereo_at_128_kbps_16kHz_in_16kHz_out_random_FER_at_10_.fer.192 IVAS_dec -fr 20 STEREO 16 stvST16c.wav_stereo_at_128_kbps_16kHz_in_16kHz_out_random_FER_at_10_.fer.192 stvST16c.wav_stereo_at_128_kbps_16kHz_in_16kHz_out_random_FER_at_10_.dec.wav ``` or ``` python3 -m pytest "test_param_file_tests[stv-stereo at 128 kbps, 16kHz in, 16kHz out, random FER at 10%]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec ```