files.c (read_file_guts): Add test on non-zero value of S_ISREG.

2011-05-29  John Tytgat  <John.Tytgat@aaug.net>

	* files.c (read_file_guts): Add test on non-zero value of S_ISREG.

From-SVN: r174571

libcpp/ChangeLog

+2011-05-29  John Tytgat  <John.Tytgat@aaug.net>
+
+	* files.c (read_file_guts): Add test on non-zero value of S_ISREG.
+
 2011-05-22  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/49104

libcpp/files.c

 /* Part of CPP library.  File handling.
    Copyright (C) 1986, 1987, 1989, 1992, 1993, 1994, 1995, 1998,
-   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+   1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
    Free Software Foundation, Inc.
    Written by Per Bothner, 1994.
    Based on CCCP program by Paul Rubin, June 1986
@@ -595,7 +595,7 @@ read_file_guts (cpp_reader *pfile, _cpp_file *file)
       return false;
     }
 
-  regular = S_ISREG (file->st.st_mode);
+  regular = S_ISREG (file->st.st_mode) != 0;
   if (regular)
     {
       /* off_t might have a wider range than ssize_t - in other words,