### Basic info - Commit SHA: main - Platform: all (but needs Linux to run sanitisers) ### Bug description MSAN (CLANG1) sanitiser reports this kind of error when input/output is 16 kHz and rate switching is used ``` Frames processed: 63 ==291897==WARNING: MemorySanitizer: use-of-uninitialized-value #0 0x8972bd in ivas_spar_get_skip_mat /ivasrepo/lib_dec/ivas_spar_decoder.c:987:30 #1 0x8912b2 in ivas_spar_dec_upmixer_sf /ivasrepo/lib_dec/ivas_spar_decoder.c:1569:5 #2 0x88eeed in ivas_spar_dec_upmixer /ivasrepo/lib_dec/ivas_spar_decoder.c:1391:9 #3 0x86c875 in ivas_sba_upmixer_renderer /ivasrepo/lib_dec/ivas_sba_rendering_internal.c:403:5 #4 0x60feea in ivas_dec /ivasrepo/lib_dec/ivas_dec.c:510:13 #5 0x503551 in IVAS_DEC_GetSamples /ivasrepo/lib_dec/lib_dec.c:850:24 #6 0x4f31f7 in decodeG192 /ivasrepo/apps/decoder.c:2002:24 #7 0x4d8c85 in main /ivasrepo/apps/decoder.c:700:17 #8 0x7efe4f062082 in __libc_start_main /build/glibc-SzIz7B/glibc-2.31/csu/../csu/libc-start.c:308:16 #9 0x45557d in _start (/ivasrepo/build-msan/IVAS_dec+0x45557d) SUMMARY: MemorySanitizer: use-of-uninitialized-value /ivasrepo/lib_dec/ivas_spar_decoder.c:987:30 in ivas_spar_get_skip_mat ``` ### Ways to reproduce For example this pipeline run https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/pipelines/20082 This can be reproduced on Linux, e.g., with following steps in main branch root ``` cmake . -Bbuild-msan -DCMAKE_C_COMPILER=clang -DCLANG=msan cmake --build build-msan -- -j16 cd build-msan sox ltv48_HOA3.wav -r 16000 ltv16_HOA3.wav ./IVAS_cod -sba 3 -max_band WB ../scripts/switchPaths/sw_13k2_512k.bin 16 ltv16_HOA3.wav debugsba.bts ./IVAS_dec 5_1 16 debugsba.bts out.wav ``` This should do what the sanitiser test does. Sox can be replaced with any other resampling tool and ltv48_HOA3.wav is obtained from the ivas-pc-testfiles repository. However, seems that you can just directly use the 48 kHz input without resampling, i.e., this ``` cmake . -Bbuild-msan -DCMAKE_C_COMPILER=clang -DCLANG=msan cmake --build build-msan -- -j16 cd build-msan ./IVAS_cod -sba 3 -max_band WB ../scripts/switchPaths/sw_13k2_512k.bin 48 ltv48_HOA3.wav debugsba.bts ./IVAS_dec 5_1 16 debugsba.bts out.wav ``` which is a bit easier. <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary. -->