--- dsimple.c.orig	Sun Apr 23 18:07:35 2017
+++ dsimple.c	Sun Apr 23 18:12:08 2017
@@ -5,6 +5,8 @@
 #include <X11/Xutil.h>
 #include <X11/cursorfont.h>
 #include <stdio.h>
+#include <stdlib.h>
+#include <stdarg.h>
 /*
  * Other_stuff.h: Definitions of routines in other_stuff.
  *
@@ -17,9 +19,11 @@ unsigned long Resolve_Color();
 Pixmap Bitmap_To_Pixmap();
 Window Select_Window();
 void out();
+void outl(char *msg, ...);
 void blip();
 Window Window_With_Name();
-void Fatal_Error();
+void Fatal_Error(char *msg, ...);
+extern void usage(void);
 
 /*
  * Just_display: A group of routines designed to make the writting of simple
@@ -46,7 +50,7 @@ extern int screen;
 char *Malloc(size)
      unsigned size;
 {
-	char *data, *malloc();
+	char *data;
 
 	if (!(data = malloc(size)))
 	  Fatal_Error("Out of memory!");
@@ -62,7 +66,7 @@ char *Realloc(ptr, size)
         char *ptr;
         int size;
 {
-	char *new_ptr, *realloc();
+	char *new_ptr;
 
 	if (!ptr)
 	  return(Malloc(size));
@@ -472,13 +476,14 @@ Window Window_With_Name(dpy, top, name)
  *       in code so we can tell where we are.  Outl may be invoked like
  *       printf with up to 7 arguments.
  */
-/* VARARGS1 */
-outl(msg, arg0,arg1,arg2,arg3,arg4,arg5,arg6)
-     char *msg;
-     char *arg0, *arg1, *arg2, *arg3, *arg4, *arg5, *arg6;
+void
+outl(char *msg, ...)
 {
 	fflush(stdout);
-	fprintf(stderr, msg, arg0, arg1, arg2, arg3, arg4, arg5, arg6);
+	va_list ap;
+	va_start(ap, msg);
+	vfprintf(stderr, msg, ap);
+	va_end(ap);
 	fprintf(stderr, "\n");
 	fflush(stderr);
 }
@@ -488,15 +493,15 @@ outl(msg, arg0,arg1,arg2,arg3,arg4,arg5,arg6)
  * Standard fatal error routine - call like printf but maximum of 7 arguments.
  * Does not require dpy or screen defined.
  */
-/* VARARGS1 */
-void Fatal_Error(msg, arg0,arg1,arg2,arg3,arg4,arg5,arg6)
-char *msg;
-char *arg0, *arg1, *arg2, *arg3, *arg4, *arg5, *arg6;
+void Fatal_Error(char *msg, ...)
 {
 	fflush(stdout);
 	fflush(stderr);
 	fprintf(stderr, "%s: error: ", program_name);
-	fprintf(stderr, msg, arg0, arg1, arg2, arg3, arg4, arg5, arg6);
+	va_list ap;
+	va_start(ap, msg);
+	vfprintf(stderr, msg, ap);
+	va_end(ap);
 	fprintf(stderr, "\n");
 	exit(2);
 }