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-rw-r--r--lib/pure/concurrency/threadpool.nim2
-rw-r--r--lib/system/atomics.nim4
2 files changed, 3 insertions, 3 deletions
diff --git a/lib/pure/concurrency/threadpool.nim b/lib/pure/concurrency/threadpool.nim
index 749a2fa2d..43a9dea11 100644
--- a/lib/pure/concurrency/threadpool.nim
+++ b/lib/pure/concurrency/threadpool.nim
@@ -290,7 +290,7 @@ proc slave(w: ptr Worker) {.thread.} =
     readyWorker = w
     signal(gSomeReady)
     await(w.taskArrived)
-    assert(not w.ready)
+    #assert(not w.ready)  # doesn't work with Visual Studio
     w.f(w, w.data)
     if w.q.len != 0: w.cleanFlowVars
     if w.shutdown:
diff --git a/lib/system/atomics.nim b/lib/system/atomics.nim
index 0b16b63bf..158fe91bc 100644
--- a/lib/system/atomics.nim
+++ b/lib/system/atomics.nim
@@ -191,11 +191,11 @@ proc atomicDec*(memLoc: var int, x: int = 1): int =
     result = memLoc
 
 when defined(windows) and not someGcc:
-  proc interlockedCompareExchange(p: pointer; exchange, comparand: int32): int32
+  proc interlockedCompareExchange(p: pointer; exchange, comparand: int): int
     {.importc: "InterlockedCompareExchange", header: "<windows.h>", cdecl.}
 
   proc cas*[T: bool|int|ptr](p: ptr T; oldValue, newValue: T): bool =
-    interlockedCompareExchange(p, newValue.int32, oldValue.int32) != 0
+    interlockedCompareExchange(p, cast[int](newValue), cast[int](oldValue)) != 0
   # XXX fix for 64 bit build
 else:
   # this is valid for GCC and Intel C++