* marshal.c (r_bytes0): check if source has enough data.

  [ruby-dev:32054]


git-svn-id: http://svn.ruby-lang.org/repos/ruby/trunk@13700 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 20 insertions, 0 deletions

diff --git a/test/ruby/test_marshal.rb b/test/ruby/test_marshal.rb
index d438ef4d8..049db1221 100644
--- a/test/ruby/test_marshal.rb
+++ b/test/ruby/test_marshal.rb
@@ -52,4 +52,24 @@ class TestMarshal < Test::Unit::TestCase
       TestMarshal::StructInvalidMembers.members
     }
   end
+
+  class C
+    def initialize(str)
+      @str = str
+    end
+    def _dump(limit)
+      @str
+    end
+    def self._load(s)
+      new(s)
+    end
+  end
+
+  def test_too_long_string
+    (data = Marshal.dump(C.new("a")))[-2, 1] = "\003\377\377\377"
+    e = assert_raise(ArgumentError, "[ruby-dev:32054]") {
+      Marshal.load(data)
+    }
+    assert_equal("marshal data too short", e.message)
+  end
 end