ref: d4bb1a020b60fe906dfa7ee2a12cc4fee1513e6a
dir: /lib/thread/test/spawn.myr/
use std use thread var done : int32 var capture const main = { var ptr capture = 666 ptr = &capture thread.spawn({ std.assert(capture==666, "wrong captured value\n") std.assert(ptr#==666, "wrong captured ptr value\n") ptr# = 333 thread.xadd(&done, 1) }) while done == 0 /* nothing */ ;; std.assert(capture == 333, "capture wasn't written to correctly\n") }