USAN: applying zero offset to null pointer in ivas_jbm_dec.c

Basic info

• Commit SHA: 472d3527

Bug description

Clang usan sanitizer test in pipeline found an error:

lib_dec/ivas_jbm_dec.c:1042:24: runtime error: applying zero offset to null pointer
SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-offset lib_dec/ivas_jbm_dec.c:1042:24 in 

Link to test pipeline: https://forge.3gpp.org/rep/ivas-codec-pc/ivas-codec/-/jobs/218864

Ways to reproduce

Using the scripts:

python3 scripts/IvasBuildAndRunChecks.py --checks CLANG3 -m ISM3_b32_dtx_fb_cbr -p /path/to/my/local/ci_linux_ltv_local.json --usan_supp_file scripts/ubsan.supp --oc BINAURAL

or directly:

make clean
make -j CLANG=3
./IVAS_cod -dtx -ism 3 NULL NULL NULL -max_band fb 32000 48 ltv48_3ISM.wav bit
./IVAS_dec BINAURAL 48 bit out.wav