5 files changed, 31 insertions, 4 deletions
diff --git a/spec/ruby/core/process/fixtures/argv0.rb b/spec/ruby/core/process/fixtures/argv0.rb
new file mode 100644
index 0000000000..847a3e903e
--- /dev/null
+++ b/spec/ruby/core/process/fixtures/argv0.rb
@@ -0,0 +1,6 @@
+puts Process.argv0
+puts __FILE__
+
+if Process.argv0 == __FILE__
+  print "OK"
+end
diff --git a/spec/ruby/core/process/fixtures/clocks.rb b/spec/ruby/core/process/fixtures/clocks.rb
new file mode 100644
index 0000000000..5757e280be
--- /dev/null
+++ b/spec/ruby/core/process/fixtures/clocks.rb
@@ -0,0 +1,18 @@
+module ProcessSpecs
+  def self.clock_constants
+    clocks = []
+
+    platform_is_not :windows do
+      clocks += Process.constants.select { |c| c.to_s.start_with?('CLOCK_') }
+
+      # These require CAP_WAKE_ALARM and are not documented in
+      # Process#clock_gettime. They return EINVAL if the permission
+      # is not granted.
+      clocks -= [:CLOCK_BOOTTIME_ALARM, :CLOCK_REALTIME_ALARM]
+    end
+
+    clocks.sort.map { |c|
+      [c, Process.const_get(c)]
+    }
+  end
+end
diff --git a/spec/ruby/core/process/fixtures/common.rb b/spec/ruby/core/process/fixtures/common.rb
index bdbf1e654b..f49513d262 100644
--- a/spec/ruby/core/process/fixtures/common.rb
+++ b/spec/ruby/core/process/fixtures/common.rb
@@ -3,11 +3,15 @@ module ProcessSpecs
     if defined?(MSpecScript::SYSTEM_RUBY)
       context.send(:before, :all) do
         @ruby = ::RUBY_EXE
-        Object.const_set(:RUBY_EXE, MSpecScript::SYSTEM_RUBY)
+        suppress_warning {
+          Object.const_set(:RUBY_EXE, MSpecScript::SYSTEM_RUBY)
+        }
       end
 
       context.send(:after, :all) do
-        Object.const_set(:RUBY_EXE, @ruby)
+        suppress_warning {
+          Object.const_set(:RUBY_EXE, @ruby)
+        }
       end
     end
   end
diff --git a/spec/ruby/core/process/fixtures/in.txt b/spec/ruby/core/process/fixtures/in.txt
new file mode 100644
index 0000000000..cf52303bdc
--- /dev/null
+++ b/spec/ruby/core/process/fixtures/in.txt
@@ -0,0 +1 @@
+stdin
diff --git a/spec/ruby/core/process/fixtures/kill.rb b/spec/ruby/core/process/fixtures/kill.rb
index 0b88f8ee1f..b922a043f1 100644
--- a/spec/ruby/core/process/fixtures/kill.rb
+++ b/spec/ruby/core/process/fixtures/kill.rb
@@ -1,5 +1,3 @@
-require 'thread'
-
 pid_file = ARGV.shift
 scenario = ARGV.shift