https://git.ruby-lang.org/ruby.git/commit/?id=6525d3bcc7

From 6525d3bcc7d0be65e2ff97d6785d9f36b5e4988a Mon Sep 17 00:00:00 2001
From: Yusuke Endoh <mame@r...>
Date: Sun, 6 Oct 2019 15:22:12 +0900
Subject: test/dtrace/helper.rb: Etc.getgrnam may return nil on some platforms


diff --git a/test/dtrace/helper.rb b/test/dtrace/helper.rb
index 7683a6a..ce73080 100644
--- a/test/dtrace/helper.rb
+++ b/test/dtrace/helper.rb
@@ -19,7 +19,7 @@ if RUBY_PLATFORM =~ /linux/ https://github.com/ruby/ruby/blob/trunk/test/dtrace/helper.rb#L19
   impl = :stap
   begin
     require 'etc'
-    ok = (%w[stapusr stapdev].map {|g|Etc.getgrnam(g).gid} & Process.groups).size == 2
+    ok = (%w[stapusr stapdev].map {|g|(Etc.getgrnam(g) || raise(ArgumentError)).gid} & Process.groups).size == 2
   rescue LoadError, ArgumentError
   end unless ok
 end
-- 
cgit v0.10.2


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