Changes to m4/m4/m4private.h,v

[Eric Blake]

CVSROOT:        /sources/m4
Module name:    m4
Changes by:     Eric Blake <ericb>      06/11/11 14:00:29

Index: m4/m4private.h
===================================================================
RCS file: /sources/m4/m4/m4/m4private.h,v
retrieving revision 1.70
retrieving revision 1.71
diff -u -b -r1.70 -r1.71
--- m4/m4private.h      31 Oct 2006 02:24:50 -0000      1.70
+++ m4/m4private.h      11 Nov 2006 14:00:28 -0000      1.71
@@ -352,6 +352,16 @@
 extern void m4__include_init (m4 *);
 
 
+/* Convert a possibly-signed character to an unsigned character.  This is
+   a bit safer than casting to unsigned char, since it catches some type
+   errors that the cast doesn't.  */
+#if HAVE_INLINE
+static inline unsigned char to_uchar (char ch) { return ch; }
+#else
+# define to_uchar(C) ((unsigned char) (C))
+#endif
+
+
 /* Debugging the memory allocator.  */
 
 #if WITH_DMALLOC