* array.c (rb_ary_to_ary): do not use #respond_to? to detect

  to_ary.  Just call.  [ruby-core:23738]

* eval.c (rb_check_funcall): new function with method existence
  check.  returns Qundef when the method does not exist.

* enumerator.c (enumerator_rewind): just call method, using
  rb_check_funcall().  [ruby-core:23738]

* error.c (exc_equal): ditto.

* object.c (convert_type): ditto.

* error.c (rb_name_err_mesg_new): export function.

* eval.c (make_exception): ditto.

* io.c (pop_last_hash): return early when the last argument is nil.

* io.c (rb_io_puts): treat T_STRING specially for small
  optimization. 

* vm_eval.c (raise_method_missing): skip method call if possible
  using rb_method_basic_definition_p().

* vm_eval.c (method_missing): ditto.

* test/ruby/test_rubyoptions.rb (TestRubyOptions#test_debug): test
  suites changed to ignore exceptions caused by just-call policy.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25556 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 0 deletions

diff --git a/io.c b/io.c
index f04540417e..f150fb7617 100644
--- a/io.c
+++ b/io.c
@@ -5157,6 +5157,7 @@ pop_last_hash(int *argc_p, VALUE *argv)
     if (*argc_p == 0)
         return Qnil;
     last = argv[*argc_p-1];
+    if (NIL_P(last)) return Qnil;
     tmp = rb_check_convert_type(last, T_HASH, "Hash", "to_hash");
     if (NIL_P(tmp))
         return Qnil;
@@ -6066,12 +6067,17 @@ rb_io_puts(int argc, VALUE *argv, VALUE out)
 	return Qnil;
     }
     for (i=0; i<argc; i++) {
+	if (TYPE(argv[i]) == T_STRING) {
+	    line = argv[i];
+	    goto string;
+	}
 	line = rb_check_array_type(argv[i]);
 	if (!NIL_P(line)) {
 	    rb_exec_recursive(io_puts_ary, line, out);
 	    continue;
 	}
 	line = rb_obj_as_string(argv[i]);
+      string:
 	rb_io_write(out, line);
 	if (RSTRING_LEN(line) == 0 ||
             RSTRING_PTR(line)[RSTRING_LEN(line)-1] != '\n') {