1 files changed, 20 insertions, 10 deletions
diff --git a/bootstraptest/test_thread.rb b/bootstraptest/test_thread.rb
index 38a55ff229..4040b68a27 100644
--- a/bootstraptest/test_thread.rb
+++ b/bootstraptest/test_thread.rb
@@ -242,9 +242,22 @@ assert_equal 'true', %{
   end
 }
 
+assert_equal 'true', %{
+  Thread.new{}.join
+  begin
+    Process.waitpid2 fork{
+      Thread.new{
+        sleep 0.1
+      }.join
+    }
+    true
+  rescue NotImplementedError
+    true
+  end
+}
+
 assert_equal 'ok', %{
-  open("zzz.rb", "w") do |f|
-    f.puts <<-END
+  File.write("zzz_t1.rb", <<-END)
       begin
         Thread.new { fork { GC.start } }.join
         pid, status = Process.wait2
@@ -253,8 +266,7 @@ assert_equal 'ok', %{
         $result = :ok
       end
     END
-  end
-  require "./zzz.rb"
+  require "./zzz_t1.rb"
   $result
 }
 
@@ -289,7 +301,7 @@ assert_normal_exit %q{
   }.each {|t|
     t.join
   }
-}
+} unless rjit_enabled? # flaky
 
 assert_equal 'ok', %q{
   def m
@@ -408,8 +420,7 @@ assert_equal 'ok', %q{
 }
 
 assert_equal 'ok', %{
-  open("zzz.rb", "w") do |f|
-    f.puts <<-'end;' # do
+  File.write("zzz_t2.rb", <<-'end;') # do
       begin
         m = Thread::Mutex.new
         parent = Thread.current
@@ -431,8 +442,7 @@ assert_equal 'ok', %{
         $result = :ok
       end
     end;
-  end
-  require "./zzz.rb"
+  require "./zzz_t2.rb"
   $result
 }
 
@@ -483,7 +493,7 @@ assert_equal 'foo', %q{
   [th1, th2].each {|t| t.join }
   GC.start
   f.call.source
-}
+} unless rjit_enabled? # flaky
 assert_normal_exit %q{
   class C
     def inspect