Skip to content

[CLANG18] MSAN: use-of-uninitialized-value in lib_com/tools_fx.c:1487:16

Basic Info

Bug description

Clang 18 MSAN found an use-of-uninitialized-value error at lib_com/tools_fx.c:1487:16:

==18642==WARNING: MemorySanitizer: use-of-uninitialized-value
#0 0x564f157cc79b in Scale_sig32 /builds/rep/sa4/audio/ivas-basop/lib_com/tools_fx.c:1487:16
#1 0x564f1505eed0 in renderInputMasa /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9197:21
#2 0x564f1502f179 in renderActiveInputsMasa /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9238:9
#3 0x564f15005062 in getSamplesInternal /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9594:5
#4 0x564f15002da5 in IVAS_REND_GetSamples /builds/rep/sa4/audio/ivas-basop/lib_rend/lib_rend_fx.c:9615:5
#5 0x564f14fa974b in main /builds/rep/sa4/audio/ivas-basop/apps/renderer.c:1940:28
#6 0x7f316ff3d1c9 in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16
#7 0x7f316ff3d28a in __libc_start_main csu/../csu/libc-start.c:360:3
#8 0x564f14efe3e4 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_com/tools_fx.c:1487:16 in Scale_sig32

How to reproduce

⚠️ 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_32kHz.wav', '-if', 'MASA2', '-o', '/builds/rep/sa4/audio/ivas-basop/tests/renderer_short/cut/MASA2_to_BINAURAL_ROOM_REVERBNone_rend_config_combined_20msNone1_32kHz.wav', '-of', 'BINAURAL_ROOM_REVERB', '-fs', '32', '-no_delay_cmp', '-q', '-im', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/stv2MASA2TC48c.met', '-render_config', '/builds/rep/sa4/audio/ivas-basop/scripts/testv/rend_config_combined.cfg', '-fr', '20', '-aeid', '1']' returned non-zero exit status 1.

or

python3 -m pytest "test_dynamic_acoustic_environment[32kHz-1-20ms-MASA2-BINAURAL_ROOM_REVERB]" -n auto --update_ref --ref_encoder_path ./IVAS_cod --ref_decoder_path ./IVAS_dec