Crash in OMASA 1TC with 3ISM at 80k

Basic info

• Float reference:
  • Encoder (float):
  • Decoder (float):
• Fixed point:
  • Encoder (fixed): de24537b
  • Decoder (fixed): de24537b

Bug description

The fixed point encoder crashes in an assert() in L_add() called through L_mac in convolve_tx_fx().

The h[] called in L_mac has the following values:

        L_sum = L_mac( L_sum, g[i], h[n - i] ); /* Qx + 16 */

h[] 0x0018f2dc {16384, 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, 32767, ...}

At i=16 where it happens h[i] = 32767 and g[i] = 1488

Ways to reproduce

The crash happens on long test files, at frame 4720 when calling:

IVAS_cod -ism_masa 3 1 \ivas-pc-longfiles\ivas-pc-testfiles\ltv48_OMASA_3ISM_1TC_ISM1.csv \ivas-pc-longfiles\ivas-pc-testfiles\ltv48_OMASA_3ISM_1TC_ISM2.csv \ivas-pc-longfiles\ivas-pc-testfiles\ltv48_OMASA_3ISM_1TC_ISM3.csv \ivas-pc-longfiles\ivas-pc-testfiles\ltv48_OMASA_3ISM_1TC.met 80000 48 \ivas-pc-longfiles\ivas-pc-testfiles\ltv48_OMASA_3ISM_1TC.wav bit