4 files changed, 13 insertions, 47 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
index 2b4916661c..5757e280be 100644
--- a/spec/ruby/core/process/fixtures/clocks.rb
+++ b/spec/ruby/core/process/fixtures/clocks.rb
@@ -2,7 +2,7 @@ module ProcessSpecs
   def self.clock_constants
     clocks = []
 
-    platform_is_not :windows, :solaris do
+    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
@@ -15,46 +15,4 @@ module ProcessSpecs
       [c, Process.const_get(c)]
     }
   end
-
-  def self.clock_constants_for_resolution_checks
-    clocks = clock_constants
-
-    # These clocks in practice on Linux do not seem to match their reported resolution.
-    platform_is :linux do
-      clocks = clocks.reject { |clock, value|
-        [:CLOCK_REALTIME_COARSE, :CLOCK_MONOTONIC_COARSE].include?(clock)
-      }
-    end
-
-    # These clocks in practice on macOS seem to be less precise than advertised by clock_getres
-    platform_is :darwin do
-      clocks = clocks.reject { |clock, value|
-        [:CLOCK_UPTIME_RAW_APPROX, :CLOCK_MONOTONIC_RAW_APPROX].include?(clock)
-      }
-    end
-
-    # These clocks in practice on ARM on Linux do not seem to match their reported resolution.
-    platform_is :armv7l, :aarch64 do
-      clocks = clocks.reject { |clock, value|
-        [:CLOCK_PROCESS_CPUTIME_ID, :CLOCK_THREAD_CPUTIME_ID, :CLOCK_MONOTONIC_RAW].include?(clock)
-      }
-    end
-
-    # These clocks in practice on AIX seem to be more precise than their reported resolution.
-    platform_is :aix do
-      clocks = clocks.reject { |clock, value|
-        [:CLOCK_REALTIME, :CLOCK_MONOTONIC].include?(clock)
-      }
-    end
-
-    # On a Hyper-V Linux guest machine, these clocks in practice
-    # seem to be less precise than advertised by clock_getres
-    platform_is :linux do
-      clocks = clocks.reject { |clock, value|
-        clock == :CLOCK_MONOTONIC_RAW
-      }
-    end
-
-    clocks
-  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/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