diff -ru programs/fonttosfnt/util.c programs/fonttosfnt/util.c
--- programs/fonttosfnt/util.c	2004-03-04 20:45:27.000000000 +0100
+++ programs/fonttosfnt/util.c	2004-03-17 16:26:18.000000000 +0100
@@ -80,18 +80,30 @@
     return s;
 }    
 
-char*
+static char*
 vsprintf_reliable(char *f, va_list args)
 {
-    int n, size = 12;
+    int n;
+    size_t size = 12;
     char *string;
     while(1) {
+	va_list args_copy;
         if(size > 4096)
             return NULL;
         string = malloc(size);
         if(!string)
             return NULL;
-        n = vsnprintf(string, size, f, args);
+#ifdef va_copy
+	va_copy(args_copy, args);
+#else
+#ifdef __va_copy
+	__va_copy(args_copy, args);
+#else
+#error	vsprintf_reliable: Note that args will be modified by vsnprintf on some architectures (for example on x86_64).
+#endif
+#endif
+        n = vsnprintf(string, size, f, args_copy);
+	va_end(args_copy);
         if(n >= 0 && n < size)
             return string;
         else if(n >= size)
diff -ru programs/fonttosfnt/fonttosfnt.h programs/fonttosfnt/fonttosfnt.h
--- programs/fonttosfnt/fonttosfnt.h	2004-03-04 18:48:48.000000000 +0100
+++ programs/fonttosfnt/fonttosfnt.h	2004-03-17 16:10:52.000000000 +0100
@@ -163,7 +172,6 @@
 #define PROP_CARDINAL 3
 
 char *sprintf_reliable(char *f, ...);
-char *vsprintf_reliable(char *f, va_list args);
 char *makeUTF16(char *);
 unsigned makeName(char*);
 int macTime(int *, unsigned *);