gc.c: avoid inadvertent pin-down

* gc.c (gc_info_decode): get rid of inadvertent dynamic symbol
  pin-down, and preserve encoding in error messages.  also should
  not use RSTRING_PTR macro on function calls.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@45480 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 5 insertions, 0 deletions

diff --git a/test/ruby/test_gc.rb b/test/ruby/test_gc.rb
index 0c8ff62cae..b1933edb56 100644
--- a/test/ruby/test_gc.rb
+++ b/test/ruby/test_gc.rb
@@ -95,6 +95,10 @@ class TestGc < Test::Unit::TestCase
     assert_equal(count[:FREE], stat[:heap_free_slot])
   end
 
+  def test_stat_argument
+    assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) {GC.stat(:"\u{30eb 30d3 30fc}")}
+  end
+
   def test_stat_single
     stat = GC.stat
     assert_equal stat[:count], GC.stat(:count)
@@ -124,6 +128,7 @@ class TestGc < Test::Unit::TestCase
     assert_not_empty info
     assert_equal info[:gc_by], GC.latest_gc_info(:gc_by)
     assert_raises(ArgumentError){ GC.latest_gc_info(:invalid) }
+    assert_raise_with_message(ArgumentError, /\u{30eb 30d3 30fc}/) {GC.latest_gc_info(:"\u{30eb 30d3 30fc}")}
   end
 
   def test_singleton_method