* file.c (file_expand_path): wrong condition. [ruby-core:31591]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@28833 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Mon Aug  2 12:22:22 2010  NAKAMURA Usaku  <usa@ruby-lang.org>
+
+	* file.c (file_expand_path): wrong condition. [ruby-core:31591]
+
 Mon Aug  2 05:34:48 2010  Tanaka Akira  <akr@fsij.org>
 
 	* ext/pathname/pathname.c (path_realdirpath): Pathname#realdirpath

file.c

@@ -2897,7 +2897,7 @@ file_expand_path(VALUE fname, VALUE dname, int abs_mode, VALUE result)
 	else {
 	    /* specified drive, but not full path */
 	    int same = 0;
-	    if (!NIL_P(dname) || !not_same_drive(dname, s[0])) {
+	    if (!NIL_P(dname) && !not_same_drive(dname, s[0])) {
 		file_expand_path(dname, Qnil, abs_mode, result);
 		BUFINIT();
 		if (has_drive_letter(p) && TOLOWER(p[0]) == TOLOWER(s[0])) {

test/ruby/test_file_exhaustive.rb

@@ -393,6 +393,7 @@ class TestFileExhaustive < Test::Unit::TestCase
       assert_equal(@file, File.expand_path(@file + " "))
       assert_equal(@file, File.expand_path(@file + "."))
       assert_equal(@file, File.expand_path(@file + "::$DATA"))
+      assert_match(/\Ac:\//i, File.expand_path('c:'), '[ruby-core:31591]')
     end
     assert_kind_of(String, File.expand_path("~"))
     assert_raise(ArgumentError) { File.expand_path("~foo_bar_baz_unknown_user_wahaha") }