Anton Khirnov 0b33310cd0 lavc/bitstream: avoid UB in bits_{read,peek}_signed(0) ...

bits_*_signed(0) will currently invoke an undefined shift by
8 * sizeof(int).

Add bits_*_signed_nz() that only works for n>0, analogous to
bits_read_nz(). Add an explicit check for n=0 in bits_*_signed().

Found-by: James Almer

2023-01-18 09:41:32 +01:00

20 KiB

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