Allow folly to compile cleanly with most of the rest of MSVC's sign mismatch warnings

[folly.git] / folly / detail / TurnSequencer.h

diff --git a/folly/detail/TurnSequencer.h b/folly/detail/TurnSequencer.h
index 536c2a493ae17eabde1c617f80e7c389ca054434..9845eab6d75ad1961fc3a7a13566e5b40f310b0c 100644 (file)
--- a/folly/detail/TurnSequencer.h
+++ b/folly/detail/TurnSequencer.h
@@ -245,7 +245,9 @@ struct TurnSequencer {
 
   /// Returns the bitmask to pass futexWait or futexWake when communicating
   /// about the specified turn
-  int futexChannel(uint32_t turn) const noexcept { return 1 << (turn & 31); }
+  uint32_t futexChannel(uint32_t turn) const noexcept {
+    return 1u << (turn & 31);
+  }
 
   uint32_t decodeCurrentSturn(uint32_t state) const noexcept {
     return state & ~kWaitersMask;