segfault using x262 with asm

[Blue_MiSfit]

So I've got some renewed interest in MPEG-2 encoding and I thought I'd give x262 a whirl.

I'm using the latest code from http://git.videolan.org/git/x262.git and building in a simple Dockerfile per below:

FROM buildpack-deps:focal as builder

ARG MAKEFLAGS="-j4"

RUN apt-get update && apt-get install -y --no-install-recommends \
        yasm \
    && rm -rf /var/lib/apt/lists/*

RUN git clone http://git.videolan.org/git/x262.git && \
    cd x262 && \
    ./configure --enable static --enable-pic && \
    make && \
    make install

No matter what I encode, I get a segfault (using simple YUV files for now as input). Any ideas?

Looks like the package manager in buildpack-deps:focal pulls in YASM 1.3.0 and gcc 9.3.0 which seems to work fine for x264 (I use this same base image to build that)