--- src/SDL_rotozoom.c.orig	2003-08-07 19:01:16.000000000 +0200
+++ src/SDL_rotozoom.c	2018-01-17 21:30:09.576536782 +0100
@@ -11,6 +11,7 @@
 #endif
 
 #include "SDL_rotozoom.h"
+#include "proto.h"
 
 #define MAX(a,b)    (((a) > (b)) ? (a) : (b))
 
@@ -49,10 +50,10 @@
     /*
      * Allocate memory for row increments 
      */
-    if ((sax = (int *) MyMalloc((dst->w + 1) * sizeof(Uint32))) == NULL) {
+    if ((sax = (int *)(intptr_t) MyMalloc((dst->w + 1) * sizeof(Uint32))) == (void*)0) {
 	return (-1);
     }
-    if ((say = (int *) MyMalloc((dst->h + 1) * sizeof(Uint32))) == NULL) {
+    if ((say = (int *)(intptr_t) MyMalloc((dst->h + 1) * sizeof(Uint32))) == NULL) {
 	free(sax);
 	return (-1);
     }
@@ -224,10 +225,10 @@
     /*
      * Allocate memory for row increments 
      */
-    if ((sax = (Uint32 *) MyMalloc(dst->w * sizeof(Uint32))) == NULL) {
+    if ((sax = (Uint32 *)(uintptr_t) MyMalloc(dst->w * sizeof(Uint32))) == NULL) {
 	return (-1);
     }
-    if ((say = (Uint32 *) MyMalloc(dst->h * sizeof(Uint32))) == NULL) {
+    if ((say = (Uint32 *)(uintptr_t) MyMalloc(dst->h * sizeof(Uint32))) == NULL) {
 	if (sax != NULL) {
 	    free(sax);
 	}