nobu	2015-08-27 01:22:56 +0900 (Thu, 27 Aug 2015)

  New Revision: 51697

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=51697

  Log:
    win32.c: ELOOP at wrename
    
    * win32/win32.c (wrename): fail with ELOOP if failed to resolve
      the old path name.

  Modified files:
    trunk/win32/win32.c
Index: win32/win32.c
===================================================================
--- win32/win32.c	(revision 51696)
+++ win32/win32.c	(revision 51697)
@@ -5009,6 +5009,18 @@ wrename(const WCHAR *oldpath, const WCHA https://github.com/ruby/ruby/blob/trunk/win32/win32.c#L5009
 	errno = map_errno(GetLastError());
 	return -1;
     }
+    if (oldatts & FILE_ATTRIBUTE_REPARSE_POINT) {
+	HANDLE fh = CreateFileW(oldpath, 0, 0, NULL, OPEN_EXISTING,
+				FILE_FLAG_BACKUP_SEMANTICS, NULL);
+	if (fh == INVALID_HANDLE_VALUE) {
+	    int e = GetLastError();
+	    if (e == ERROR_CANT_RESOLVE_FILENAME) {
+		errno = ELOOP;
+		return -1;
+	    }
+	}
+	CloseHandle(fh);
+    }
 
     RUBY_CRITICAL({
 	if (newatts != -1 && newatts & FILE_ATTRIBUTE_READONLY)

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