nobu	2017-10-25 17:37:17 +0900 (Wed, 25 Oct 2017)

  New Revision: 60421

  https://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=60421

  Log:
    win32.c: unknown reparse tags
    
    * win32/win32.c (rb_w32_read_reparse_point): skip unknown reparse
      tags.  [ruby-core:83539] [Bug #14047]

  Modified files:
    trunk/win32/win32.c
Index: win32/win32.c
===================================================================
--- win32/win32.c	(revision 60420)
+++ win32/win32.c	(revision 60421)
@@ -5017,7 +5017,7 @@ rb_w32_read_reparse_point(const WCHAR *p https://github.com/ruby/ruby/blob/trunk/win32/win32.c#L5017
 	    ret = rp->SymbolicLinkReparseBuffer.PrintNameLength;
 	    *len = ret / sizeof(WCHAR);
 	}
-	else { /* IO_REPARSE_TAG_MOUNT_POINT */
+	else if (rp->ReparseTag == IO_REPARSE_TAG_MOUNT_POINT) {
 	    static const WCHAR *volume = L"Volume{";
 	    enum {volume_prefix_len = rb_strlen_lit("\\??\\")};
 	    name = ((char *)rp->MountPointReparseBuffer.PathBuffer +
@@ -5030,6 +5030,9 @@ rb_w32_read_reparse_point(const WCHAR *p https://github.com/ruby/ruby/blob/trunk/win32/win32.c#L5030
 		memcmp(name, volume, sizeof(volume) - 1 * sizeof(WCHAR)) == 0)
 		return -1;
 	}
+	else {
+	    return -1;
+	}
 	*result = name;
 	if (e) {
 	    if ((char *)name + ret + sizeof(WCHAR) > (char *)rp + bufsize)

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