### Basic Info - Commit SHA: 6ff99c98efc6107548ccf07de60ff66339af1b46 ### Bug description Clang 18 MSAN found an use-of-uninitialized-value error at lib_rend/lib_rend_fx.c:7035:37: ``` ==18855==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x558e35cb61b2 in renderIsmToSba /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:7035:37 #1 0x558e35cb2cff in renderInputIsm /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:7307:21 #2 0x558e35cb0d2e in renderActiveInputsIsm /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:7370:9 #3 0x558e35c87cbd in getSamplesInternal /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9582:5 #4 0x558e35c85da5 in IVAS_REND_GetSamples /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9615:5 #5 0x558e35c2c74b in main /builds/rep/sa4/audio/ivas-basop/apps/renderer.c:1940:28 #6 0x7fef26f961c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #7 0x7fef26f9628a in __libc_start_main csu/../csu/libc-start.c:360:3 #8 0x558e35b813e4 in _start (/builds/rep/sa4/audio/ivas-basop/IVAS_rend+0x3a3e4) (BuildId: 95a4b3e2a14753d995ecbd30d0f4bf3185fc019d) SUMMARY: MemorySanitizer: use-of-uninitialized-value /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:7035:37 in renderIsmToSba ``` ### 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 ``` E subprocess.CalledProcessError: Command '['/builds/rep/sa4/audio/ivas-basop/IVAS_rend', '-i', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/spectral_test_6ch_16kHz.wav', '-if', 'ISM4MASA2', '-o', '/builds/rep/sa4/audio/ivas-basop/tests/renderer_short/cut/ISM4MASA2_to_HOA2None_20msNone_16kHz.wav', '-of', 'HOA2', '-fs', '16', '-no_delay_cmp', '-q', '-im', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stvISM1.csv', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stvISM2.csv', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stvISM3.csv', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stvISM4.csv', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stvOMASA_4ISM_2MASA2TC48c.met', '-fr', '20']' returned non-zero exit status 1. ``` or ``` python3 -m pytest "test_omasa[16kHz-20ms-ISM4MASA2-HOA2]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec ```