Gentoo's Bugzilla –
Attachment 896820 Details for
Bug 935377media-video/ffmpeg-6.1.1-r5[gcrypt] - src/libavformat/rtmpdh.c:231:5: error: incompatible integer to pointer conversion returning 'int' from a function with result type 'FFBigNum' (aka 'struct gcry_mpi *') [-Wint-conversion]