### Basic Info - Commit SHA: 6ff99c98efc6107548ccf07de60ff66339af1b46 ### Bug description Clang 18 MSAN found an use-of-uninitialized-value error at lib_rend/lib_rend_fx.c:11230:9: ``` ==18738==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x5647b9f65a3e in intermidiate_ext_dirac_render /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:11230:9 #1 0x5647b9f59db2 in renderInputMasa /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9164:21 #2 0x5647b9f2b179 in renderActiveInputsMasa /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9238:9 #3 0x5647b9f01062 in getSamplesInternal /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9594:5 #4 0x5647b9efeda5 in IVAS_REND_GetSamples /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9615:5 #5 0x5647b9ea574b in main /builds/rep/sa4/audio/ivas-basop/apps/renderer.c:1940:28 #6 0x7f4e5f9b11c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #7 0x7f4e5f9b128a in __libc_start_main csu/../csu/libc-start.c:360:3 #8 0x5647b9dfa3e4 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:11230:9 in intermidiate_ext_dirac_render ``` ### 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_2ch_16kHz.wav', '-if', 'MASA2', '-o', '/builds/rep/sa4/audio/ivas-basop/tests/renderer_short/cut/MASA2_to_MONONone_20msNone_16kHz.wav', '-of', 'MONO', '-fs', '16', '-no_delay_cmp', '-q', '-im', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stv2MASA2TC48c.met', '-fr', '20']' returned non-zero exit status 1. ``` or ``` python3 -m pytest "test_masa[16kHz-20ms-MASA2-MONO]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec ```