Fix signed warnings compiling lib/Sema/ConstraintSystem.h

hughbe · hughbe · commit b3ade87eee9d · 2017-01-15T10:36:11.000Z
diff --git a/lib/Sema/ConstraintSystem.h b/lib/Sema/ConstraintSystem.h
@@ -2482,7 +2482,7 @@ class ConstraintSystem {
         return false;
 
       // Clearly exponential
-      if (TypeCounter < 32 && CountScopes > (1 << TypeCounter))
+      if (TypeCounter < 32 && CountScopes > (1U << TypeCounter))
         return true;
 
       // Bail out once we've looked at a really large number of
