Added a few more printf() error tests.

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

@@ -40,6 +40,16 @@ public class TestPrograms {
    public TestPrograms() {
    }
 
+   @Test
+   public void testPrintfError5() throws IOException, URISyntaxException {
+      assertError("printf-error-5.c", "Error! printf() format parameter must be a string!");
+   }
+
+   @Test
+   public void testPrintfError4() throws IOException, URISyntaxException {
+      assertError("printf-error-4.c", "Error! Only constant printf() format parameter supported!");
+   }
+
    @Test
    public void testPrintfError3() throws IOException, URISyntaxException {
       assertError("printf-error-3.c", "Error! If any single printf() placeholder specifies a parameter, all the rest of the placeholders must also specify a parameter!");

src/test/kc/printf-error-4.c

@@ -0,0 +1,12 @@
+// Tests printf function call rewriting
+// Non-constant format parameter
+
+#include <printf.h>
+
+void main() {
+    char* fmt = "%d";
+    printf(fmt, 1);
+    fmt = "%hhx";
+    printf(fmt, 1);
+}
+

src/test/kc/printf-error-5.c

@@ -0,0 +1,9 @@
+// Tests printf function call rewriting
+// Non-string format parameter
+
+#include <printf.h>
+
+void main() {
+    printf(1, 1);
+}
+