13 files changed, 19 insertions, 19 deletions
diff --git a/ext/fiddle/closure.c b/ext/fiddle/closure.c
index f19091b29b..1a80b2b02a 100644
--- a/ext/fiddle/closure.c
+++ b/ext/fiddle/closure.c
@@ -1,6 +1,7 @@
 #include <fiddle.h>
 #include <ruby/thread.h>
-#include "internal.h" /* rb_thread_has_gvl_p */
+
+int ruby_thread_has_gvl_p(void); /* from internal.h */
 
 VALUE cFiddleClosure;
 
diff --git a/ext/fiddle/extconf.rb b/ext/fiddle/extconf.rb
index 9e244ed27d..2c333001e5 100644
--- a/ext/fiddle/extconf.rb
+++ b/ext/fiddle/extconf.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'mkmf'
 
 # :stopdoc:
@@ -41,12 +41,12 @@ begin
   libffi.lib = "#{libffi.builddir}/.libs"
   libffi.a = "#{libffi.lib}/libffi_convenience.#{$LIBEXT}"
   nowarn = CONFIG.merge("warnflags"=>"")
-  libffi.cflags = RbConfig.expand("$(CFLAGS)", nowarn)
+  libffi.cflags = RbConfig.expand("$(CFLAGS)".dup, nowarn)
   ver = ver[/libffi-(.*)/, 1]
 
   FileUtils.mkdir_p(libffi.dir)
   libffi.opt = CONFIG['configure_args'][/'(-C)'/, 1]
-  libffi.ldflags = RbConfig.expand("$(LDFLAGS) #{libpathflag([relative_from($topdir, "..")])} #{$LIBRUBYARG}")
+  libffi.ldflags = RbConfig.expand("$(LDFLAGS) #{libpathflag([relative_from($topdir, "..")])} #{$LIBRUBYARG}".dup)
   libffi.arch = RbConfig::CONFIG['host']
   if $mswin
     unless find_executable(as = /x64/ =~ libffi.arch ? "ml64" : "ml")
@@ -77,7 +77,7 @@ begin
   args << libffi.opt if libffi.opt
   args.concat %W[
       CC=#{cc} CFLAGS=#{libffi.cflags}
-      CXX=#{cxx} CXXFLAGS=#{RbConfig.expand("$(CXXFLAGS)", nowarn)}
+      CXX=#{cxx} CXXFLAGS=#{RbConfig.expand("$(CXXFLAGS)".dup, nowarn)}
       LD=#{ld} LDFLAGS=#{libffi.ldflags}
   ]
 
diff --git a/ext/fiddle/fiddle.gemspec b/ext/fiddle/fiddle.gemspec
index 3e54f47f96..054d7c06ec 100644
--- a/ext/fiddle/fiddle.gemspec
+++ b/ext/fiddle/fiddle.gemspec
@@ -1,14 +1,14 @@
 # frozen_string_literal: true
 Gem::Specification.new do |spec|
   spec.name          = "fiddle"
-  spec.version       = '1.0.0.beta1'
+  spec.version       = '1.0.0.beta2'
   spec.authors       = ["Aaron Patterson", "SHIBATA Hiroshi"]
   spec.email         = ["aaron@tenderlovemaking.com", "hsbt@ruby-lang.org"]
 
   spec.summary       = %q{A libffi wrapper for Ruby.}
   spec.description   = %q{A libffi wrapper for Ruby.}
   spec.homepage      = "https://github.com/ruby/fiddle"
-  spec.license       = "MIT"
+  spec.license       = "BSD-2-Clause"
 
   spec.files         = [".gitignore", ".travis.yml", "Gemfile", "LICENSE.txt", "README.md", "Rakefile", "bin/console", "bin/setup", "ext/fiddle/closure.c", "ext/fiddle/closure.h", "ext/fiddle/conversions.c", "ext/fiddle/conversions.h", "ext/fiddle/extconf.rb", "ext/fiddle/extlibs", "ext/fiddle/fiddle.c", "ext/fiddle/fiddle.h", "ext/fiddle/function.c", "ext/fiddle/function.h", "ext/fiddle/handle.c", "ext/fiddle/pointer.c", "ext/fiddle/win32/fficonfig.h", "ext/fiddle/win32/libffi-3.2.1-mswin.patch", "ext/fiddle/win32/libffi-config.rb", "ext/fiddle/win32/libffi.mk.tmpl", "fiddle.gemspec", "lib/fiddle.rb", "lib/fiddle/closure.rb", "lib/fiddle/cparser.rb", "lib/fiddle/function.rb", "lib/fiddle/import.rb", "lib/fiddle/pack.rb", "lib/fiddle/struct.rb", "lib/fiddle/types.rb", "lib/fiddle/value.rb"]
   spec.bindir        = "exe"
@@ -17,6 +17,5 @@ Gem::Specification.new do |spec|
 
   spec.add_development_dependency "bundler"
   spec.add_development_dependency "rake"
-  spec.add_development_dependency "minitest", "~> 4.0"
   spec.add_development_dependency "rake-compiler"
 end
diff --git a/ext/fiddle/lib/fiddle.rb b/ext/fiddle/lib/fiddle.rb
index 5208eb9328..e9aa7e50ae 100644
--- a/ext/fiddle/lib/fiddle.rb
+++ b/ext/fiddle/lib/fiddle.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'fiddle.so'
 require 'fiddle/function'
 require 'fiddle/closure'
diff --git a/ext/fiddle/lib/fiddle/closure.rb b/ext/fiddle/lib/fiddle/closure.rb
index 0b9adbb60a..c865a63c20 100644
--- a/ext/fiddle/lib/fiddle/closure.rb
+++ b/ext/fiddle/lib/fiddle/closure.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Fiddle
   class Closure
 
diff --git a/ext/fiddle/lib/fiddle/cparser.rb b/ext/fiddle/lib/fiddle/cparser.rb
index 6b9da9fa7c..d3b450b85f 100644
--- a/ext/fiddle/lib/fiddle/cparser.rb
+++ b/ext/fiddle/lib/fiddle/cparser.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Fiddle
   # A mixin that provides methods for parsing C struct and prototype signatures.
   #
diff --git a/ext/fiddle/lib/fiddle/function.rb b/ext/fiddle/lib/fiddle/function.rb
index fcd90dfd26..dd5e04e417 100644
--- a/ext/fiddle/lib/fiddle/function.rb
+++ b/ext/fiddle/lib/fiddle/function.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Fiddle
   class Function
     # The ABI of the Function.
diff --git a/ext/fiddle/lib/fiddle/import.rb b/ext/fiddle/lib/fiddle/import.rb
index 09429f6631..59ab3ee6f7 100644
--- a/ext/fiddle/lib/fiddle/import.rb
+++ b/ext/fiddle/lib/fiddle/import.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'fiddle'
 require 'fiddle/struct'
 require 'fiddle/cparser'
diff --git a/ext/fiddle/lib/fiddle/pack.rb b/ext/fiddle/lib/fiddle/pack.rb
index 6301068450..3c9e3c8ad7 100644
--- a/ext/fiddle/lib/fiddle/pack.rb
+++ b/ext/fiddle/lib/fiddle/pack.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'fiddle'
 
 module Fiddle
@@ -101,7 +101,7 @@ module Fiddle
     private
 
     def parse_types(types)
-      @template = ""
+      @template = "".dup
       addr     = 0
       types.each{|t|
         orig_addr = addr
diff --git a/ext/fiddle/lib/fiddle/struct.rb b/ext/fiddle/lib/fiddle/struct.rb
index 233a987269..7c0dedb39f 100644
--- a/ext/fiddle/lib/fiddle/struct.rb
+++ b/ext/fiddle/lib/fiddle/struct.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'fiddle'
 require 'fiddle/value'
 require 'fiddle/pack'
diff --git a/ext/fiddle/lib/fiddle/types.rb b/ext/fiddle/lib/fiddle/types.rb
index 8a72635a69..8dc811d3e4 100644
--- a/ext/fiddle/lib/fiddle/types.rb
+++ b/ext/fiddle/lib/fiddle/types.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 module Fiddle
   # Adds Windows type aliases to the including class for use with
   # Fiddle::Importer.
diff --git a/ext/fiddle/lib/fiddle/value.rb b/ext/fiddle/lib/fiddle/value.rb
index ac318cf2c4..a043b9b066 100644
--- a/ext/fiddle/lib/fiddle/value.rb
+++ b/ext/fiddle/lib/fiddle/value.rb
@@ -1,4 +1,4 @@
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'fiddle'
 
 module Fiddle
diff --git a/ext/fiddle/win32/libffi-config.rb b/ext/fiddle/win32/libffi-config.rb
index 7a32a91517..6abc9b2c02 100755
--- a/ext/fiddle/win32/libffi-config.rb
+++ b/ext/fiddle/win32/libffi-config.rb
@@ -1,5 +1,5 @@
 #!/usr/bin/ruby
-# frozen_string_literal: false
+# frozen_string_literal: true
 require 'fileutils'
 
 basedir = File.dirname(__FILE__)