alpine:3.9 python3 and gdb core dump in aarch64

I tried running alpine3.9 on raspberrypi3-64 today and see that python3 and pip3 both segfault and core-dump when I try and run them.
~~~
$ docker run --rm -it alpine:3.9 /bin/sh
...
$ python3
Segmentation fault (core dumped)
~~~

I tried to attach gdb to the process and it crashes as well. Makes me think its probably some libc issue, but I unfortunately don't have a core dump to share right now.

No repository file or test is named. Reproduce the failure with docker run --rm -it alpine:3.9 /bin/sh on a Raspberry Pi 3 64-bit, then compare python3, pip3, and gdb while collecting a core dump and backtrace. Done means the affected component is identified and the failure is verified against the resulting change.

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