64-bit system where unaligned accesses throw a Bus Error. 4 byte alignment is by no means a safe default nowadays
And yup, that's the cause. Fix sent upstream. https://bugzilla.libsdl.org/show_bug.cgi?id=4835
@libc The value gets overridden in almost all cases, but it's dependent on particular CPU features, and this is a non-x86 system:
So it probably just hasn't been tested on other CPUs at all
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