From 290deeb7052f54b2bf7adb520c0601b578524580 Mon Sep 17 00:00:00 2001
From: nobu <nobu@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 29 Dec 2015 12:23:04 +0000
Subject: ruby.c: overriding warning options

* ruby.c (proc_options): successive -W option overrides previous
  warning options.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@53372 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ruby.c                        | 6 ++++--
 test/ruby/test_rubyoptions.rb | 1 +
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/ruby.c b/ruby.c
index 2e586c4..0a39bfb 100644
--- a/ruby.c
+++ b/ruby.c
@@ -832,6 +832,7 @@ proc_options(long argc, char **argv, struct cmdline_options *opt, int envopt)
 {
     long n, argc0 = argc;
     const char *s;
+    int warning = opt->warning;
 
     if (argc == 0)
 	return 0;
@@ -881,7 +882,7 @@ proc_options(long argc, char **argv, struct cmdline_options *opt, int envopt)
 	    opt->verbose = 1;
 	  case 'w':
 	    if (!opt->warning) {
-		opt->warning = 1;
+		warning = 1;
 		ruby_verbose = Qtrue;
 	    }
 	    s++;
@@ -911,7 +912,7 @@ proc_options(long argc, char **argv, struct cmdline_options *opt, int envopt)
 			break;
 		    }
 		}
-		opt->warning = 1;
+		warning = 1;
 	    }
 	    goto reswitch;
 
@@ -1234,6 +1235,7 @@ proc_options(long argc, char **argv, struct cmdline_options *opt, int envopt)
     }
 
   switch_end:
+    if (warning) opt->warning = warning;
     return argc0 - argc;
 }
 
diff --git a/test/ruby/test_rubyoptions.rb b/test/ruby/test_rubyoptions.rb
index 95d60d9..ba74be5 100644
--- a/test/ruby/test_rubyoptions.rb
+++ b/test/ruby/test_rubyoptions.rb
@@ -64,6 +64,7 @@ class TestRubyOptions < Test::Unit::TestCase
     assert_in_out_err(%w(-W1 -e) + ['p $-W'], "", %w(1), [])
     assert_in_out_err(%w(-Wx -e) + ['p $-W'], "", %w(1), [])
     assert_in_out_err(%w(-W -e) + ['p $-W'], "", %w(2), [])
+    assert_in_out_err(%w(-w -W0 -e) + ['p $-W'], "", %w(0), [])
   ensure
     ENV['RUBYOPT'] = save_rubyopt
   end
-- 
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