no argument conversions in rb_realpath_internal

* file.c (rb_realpath_internal): no argument conversions since
  this internal function does not need to_path and encoding
  conversions, not to be affected by the default internal
  encoding.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@54528 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,10 @@
+Sun Apr 10 17:47:42 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* file.c (rb_realpath_internal): no argument conversions since
+	  this internal function does not need to_path and encoding
+	  conversions, not to be affected by the default internal
+	  encoding.
+
 Sat Apr  9 10:03:12 2016  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* load.c (rb_f_load): raise with the original path name before

file.c

@@ -3828,7 +3828,6 @@ rb_realpath_internal(VALUE basedir, VALUE path, int strict)
     char *ptr, *prefixptr = NULL, *pend;
     long len;
 
-    FilePathValue(path);
     unresolved_path = rb_str_dup_frozen(path);
 
     if (!NIL_P(basedir)) {
@@ -3915,6 +3914,7 @@ rb_file_s_realpath(int argc, VALUE *argv, VALUE klass)
 {
     VALUE path, basedir;
     rb_scan_args(argc, argv, "11", &path, &basedir);
+    FilePathValue(path);
     return rb_realpath_internal(basedir, path, 1);
 }
 
@@ -3935,6 +3935,7 @@ rb_file_s_realdirpath(int argc, VALUE *argv, VALUE klass)
 {
     VALUE path, basedir;
     rb_scan_args(argc, argv, "11", &path, &basedir);
+    FilePathValue(path);
     return rb_realpath_internal(basedir, path, 0);
 }