* ext/openssl/ossl_pkey_ec.c: Ensure compatibility to builds of

OpenSSL with OPENSSL_NO_EC2M defined, but OPENSSL_NO_EC not
  defined.
* test/openssl/test_pkey_ec.rb: Iterate over built-in curves
  (and assert their non-emptiness!) instead of hard-coding them, as
  this may cause problems with respect to the different availability
  of individual curves in individual OpenSSL builds.
  [ruby-core:54881] [Bug #8384]

  Thanks to Vit Ondruch for providing the patch!


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@41808 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

test/openssl/test_pkey_ec.rb

@@ -7,28 +7,28 @@ class OpenSSL::TestEC < Test::Unit::TestCase
     @data1 = 'foo'
     @data2 = 'bar' * 1000 # data too long for DSA sig
 
-    @group1 = OpenSSL::PKey::EC::Group.new('secp112r1')
-    @group2 = OpenSSL::PKey::EC::Group.new('sect163k1')
-    @group3 = OpenSSL::PKey::EC::Group.new('prime256v1')
+    @groups = []
+    @keys = []
 
-    @key1 = OpenSSL::PKey::EC.new
-    @key1.group = @group1
-    @key1.generate_key
+    OpenSSL::PKey::EC.builtin_curves.each do |curve, comment|
+      group = OpenSSL::PKey::EC::Group.new(curve)
 
-    @key2 = OpenSSL::PKey::EC.new(@group2.curve_name)
-    @key2.generate_key
+      key = OpenSSL::PKey::EC.new(group)
+      key.generate_key
 
-    @key3 = OpenSSL::PKey::EC.new(@group3)
-    @key3.generate_key
-
-    @groups = [@group1, @group2, @group3]
-    @keys = [@key1, @key2, @key3]
+      @groups << group
+      @keys << key
+    end
   end
 
   def compare_keys(k1, k2)
     assert_equal(k1.to_pem, k2.to_pem)
   end
 
+  def test_builtin_curves
+    assert(!OpenSSL::PKey::EC.builtin_curves.empty?)
+  end
+
   def test_curve_names
     @groups.each_with_index do |group, idx|
       key = @keys[idx]