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[CLANG18] MSAN: use-of-uninitialized-value in lib_com/cldfb_evs_fx.c:952:22

Basic Info

Bug description

Clang 18 MSAN found an use-of-uninitialized-value error at lib_com/cldfb_evs_fx.c:952:22:

==20404==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x5629777f1888 in configureCldfb /builds/rep/sa4/audio/ivas-basop/lib_com/cldfb_evs_fx.c:952:22
#1 0x5629777f4498 in openCldfb /builds/rep/sa4/audio/ivas-basop/lib_com/cldfb_evs_fx.c:1002:5
#2 0x56297737a227 in init_encoder_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/init_enc_fx.c:715:13
#3 0x562976c4b96f in create_sce_enc_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_sce_enc_fx.c:474:5
#4 0x562976a1d8ce in ivas_init_encoder_fx /builds/rep/sa4/audio/ivas-basop/lib_enc/ivas_init_enc_fx.c:575:9
#5 0x5629768b3b12 in configureEncoder /builds/rep/sa4/audio/ivas-basop/lib_enc/lib_enc_fx.c:1141:5
#6 0x5629768af411 in IVAS_ENC_ConfigureForMono /builds/rep/sa4/audio/ivas-basop/lib_enc/lib_enc_fx.c:312:13
#7 0x5629768988ca in main /builds/rep/sa4/audio/ivas-basop/apps/encoder.c:406:28
#8 0x7ff2ce73a1c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#9 0x7ff2ce73a28a in __libc_start_main csu/../csu/libc-start.c:360:3
#10 0x5629767fe454 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_com/cldfb_evs_fx.c:952:22 in configureCldfb

How to reproduce

⚠️ Make sure to use CLANG v18 for building the codec :warning

Build with

make clean
make -j CLANG=1

Then run

IVAS_cod -stereo_dmx_evs 13200 32 scripts/testv/stvST32c.wav stvST32c.wav_Stereo_downmix_to_bit_exact_EVS_at_13200_kbps_32kHz_in_32kHz_out.192

or

python3 -m pytest "test_param_file_tests[stv-Stereo downmix to bit-exact EVS at 13200 kbps, 32kHz in, 32kHz out]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec