Update to ruby/mspec@b5b13de

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@63291 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 1 deletions

diff --git a/spec/mspec/lib/mspec/matchers/block_caller.rb b/spec/mspec/lib/mspec/matchers/block_caller.rb
index 017bce3cb7..4149586747 100644
--- a/spec/mspec/lib/mspec/matchers/block_caller.rb
+++ b/spec/mspec/lib/mspec/matchers/block_caller.rb
@@ -10,7 +10,11 @@ class BlockingMatcher
       blocking = false
     end
 
-    while !started and status = thread.status and status != "sleep"
+    Thread.pass while !started
+
+    # Wait until the Thread status is "sleep" (then it's blocking)
+    # or nil (the Thread finished execution, it did not block)
+    while status = thread.status and status != "sleep"
       Thread.pass
     end
     thread.kill