1 files changed, 26 insertions, 4 deletions
diff --git a/tool/lib/leakchecker.rb b/tool/lib/leakchecker.rb
index 052bea5e53..4cd28b9dd5 100644
--- a/tool/lib/leakchecker.rb
+++ b/tool/lib/leakchecker.rb
@@ -182,7 +182,8 @@ class LeakChecker
 
   def find_threads
     Thread.list.find_all {|t|
-      t != Thread.current && t.alive?
+      t != Thread.current && t.alive? &&
+        !(t.thread_variable?(:"\0__detached_thread__") && t.thread_variable_get(:"\0__detached_thread__"))
     }
   end
 
@@ -209,15 +210,36 @@ class LeakChecker
     return leaked
   end
 
-  def find_env
-    ENV.to_h
+  e = ENV["_Ruby_Env_Ignorecase_"], ENV["_RUBY_ENV_IGNORECASE_"]
+  begin
+    ENV["_Ruby_Env_Ignorecase_"] = ENV["_RUBY_ENV_IGNORECASE_"] = nil
+    ENV["_RUBY_ENV_IGNORECASE_"] = "ENV_CASE_TEST"
+    ENV_IGNORECASE = ENV["_Ruby_Env_Ignorecase_"] == "ENV_CASE_TEST"
+  ensure
+    ENV["_Ruby_Env_Ignorecase_"], ENV["_RUBY_ENV_IGNORECASE_"] = e
+  end
+
+  if ENV_IGNORECASE
+    def find_env
+      ENV.to_h {|k, v| [k.upcase, v]}
+    end
+  else
+    def find_env
+      ENV.to_h
+    end
   end
 
   def check_env(test_name)
     old_env = @env_info
-    new_env = ENV.to_h
+    new_env = find_env
     return false if old_env == new_env
+    if defined?(Bundler::EnvironmentPreserver)
+      bundler_prefix = Bundler::EnvironmentPreserver::BUNDLER_PREFIX
+    end
     (old_env.keys | new_env.keys).sort.each {|k|
+      # Don't report changed environment variables caused by Bundler's backups
+      next if bundler_prefix and k.start_with?(bundler_prefix)
+
       if old_env.has_key?(k)
         if new_env.has_key?(k)
           if old_env[k] != new_env[k]