# Basic info <!--- Add commit SHA used to reproduce--> - Fixed point: 24e8bdab048783058e1cbd328e66b0a7935e5153 # Bug description USAN found an out-of-bounds indexing: ``` lib_com/tcx_ltp_fx.c:404:12: runtime error: index 4 out of bounds for type 'const Word16 [4][4]' #0 0x1063a4a in predict_signal /ivas-basop/lib_com/tcx_ltp_fx.c:404:12 #1 0x92207c in tcx_ltp_encode_ivas_fx /ivas-basop/lib_enc/tcx_ltp_enc_fx.c:1115:5 #2 0x9c0fb4 in core_signal_analysis_high_bitrate_ivas_fx /ivas-basop/lib_enc/ext_sig_ana_fx.c:592:9 #3 0x84a979 in stereo_tcx_core_enc /ivas-basop/lib_enc/ivas_tcx_core_enc_fx.c:379:5 #4 0xa1142c in ivas_core_enc_fx /ivas-basop/lib_enc/ivas_core_enc_fx.c:354:13 #5 0xac0fc4 in ivas_cpe_enc_fx /ivas-basop/lib_enc/ivas_cpe_enc_fx.c:1230:5 #6 0x485ea3 in ivas_enc_fx /ivas-basop/lib_enc/ivas_enc_fx.c:182:9 #7 0x43d5a8 in IVAS_ENC_EncodeFrameToSerial /ivas-basop/lib_enc/lib_enc_fx.c:1502:13 #8 0x42cf18 in main /ivas-basop/apps/encoder.c:877:28 #9 0x7f1d71a6cd8f in __libc_start_call_main csu/../sysdeps/nptl/libc_start_call_main.h:58:16 #10 0x7f1d71a6ce3f in __libc_start_main csu/../csu/libc-start.c:392:3 #11 0x4045b4 in _start (/ivas-basop/IVAS_cod+0x4045b4) SUMMARY: UndefinedBehaviorSanitizer: out-of-bounds-index lib_com/tcx_ltp_fx.c:404:12 in ``` It needs to be checked if this is an actual bug or a somewhat "false positive" that is assigned, but never really used. In any case, it is preferable to fix this to have one less noise in the USAN error reports. # Ways to reproduce <!--Commandline or script--> ```bash make clean make -j CLANG=3 IVAS_cod -stereo -stereo 32000 32 scripts/testv/stvST32n.wav bit ``` <!--- 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.-->