https://github.com/akkartik/mu/blob/main/315slice.subx
 1 == code
 2 
 3 # variant of slice-to-string intended to be called from Mu
 4 # Mu doesn't yet expose allocation-descriptors
 5 _slice-to-string:  # in: (addr slice), out: (addr handle array byte)
 6     # . prologue
 7     55/push-ebp
 8     89/<- %ebp 4/r32/esp
 9     #
10     (slice-to-string Heap *(ebp+8) *(ebp+0xc))
11     # . epilogue
12     89/<- %esp 5/r32/ebp
13     5d/pop-to-ebp
14     c3/return