The following code crashes windows spur32 VM without crash.dmp:

(crashes not only in case of int8, but ulong, int16/32 and so on...)

Callback instantiation:

createCallback
^ FFICallback
signature: #(int8 (int8))
block: [ :value | value ]

C function:

int8_t test(int8_t(*function)(int8_t), int8_t value) {
return function(value);
}

FFI call:

primCall: aCallback int8: aNumber
^ self ffiCall: #(int8 test(FFICallback aCallback, int8 aNumber))

Test case:

test
self
assert: (self primCall: self createCallback int8: 0)
equals: 0

Windows 10.

VM from today:

Image 60343:

P.S. what is the best place to report FFI / Alien issues?