Added test demonstrating problem with NULL parameter. #706

src/test/java/dk/camelot64/kickc/test/TestProgramsFast.java

@@ -99,6 +99,11 @@ public class TestProgramsFast extends TestPrograms {
       compileAndCompare("null-constant.c");
    }
 
+   //@Test
+   //public void testNullConstant1() throws IOException {
+   //   compileAndCompare("null-constant-1.c");
+   //}
+
    @Test
    public void testBlockError2() throws IOException {
       compileAndCompare("block-error-2.c");

src/test/kc/null-constant-1.c

@@ -0,0 +1,17 @@
+// Test the NULL pointer
+
+#include <stddef.h>
+
+void main() {
+    char* SCREEN = (char*)0x0400;
+
+    SCREEN[1] = get(SCREEN);
+    SCREEN[0] = get(NULL);
+
+}
+
+char get(char* ptr) {
+    if(NULL==ptr)
+        return 0;
+    return *ptr;
+}