### Basic Info - Commit SHA: 6ff99c98efc6107548ccf07de60ff66339af1b46 ### Bug description Clang 18 MSAN found an use-of-uninitialized-value error at lib_rend/lib_rend_fx.c:11202:19: ``` ==18730==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x560e2d8556c3 in intermidiate_ext_dirac_render /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:11202:19 #1 0x560e2d84adb2 in renderInputMasa /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9164:21 #2 0x560e2d81c179 in renderActiveInputsMasa /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9238:9 #3 0x560e2d7f2062 in getSamplesInternal /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9594:5 #4 0x560e2d7efda5 in IVAS_REND_GetSamples /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9615:5 #5 0x560e2d79674b in main /builds/rep/sa4/audio/ivas-basop/apps/renderer.c:1940:28 #6 0x7efe902641c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #7 0x7efe9026428a in __libc_start_main csu/../csu/libc-start.c:360:3 #8 0x560e2d6eb3e4 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:11202:19 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_1ch_48kHz.wav', '-if', 'MASA1', '-o', '/builds/rep/sa4/audio/ivas-basop/tests/renderer_short/cut/MASA1_to_HOA3None_20msNone_48kHz.wav', '-of', 'HOA3', '-fs', '48', '-no_delay_cmp', '-q', '-im', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stv1MASA1TC48c.met', '-fr', '20']' returned non-zero exit status 1. ``` or ``` python3 -m pytest "test_masa[48kHz-20ms-MASA1-HOA3]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec ```