Added missing c-file.

src/test/kc/global-label-problem.c

@@ -0,0 +1,24 @@
+// Demonstrates problems with local labels overwriting global labels
+// This should produce "abca" - but produces "abcc" because the local variable containing "c" overrides the global variable containing "a"
+
+void main () {
+    print("a");
+    print("b");
+    print1();
+}
+
+void print1() {
+    print("c");
+    print("a");
+}
+
+// Screen pointer and index
+char* const SCREEN = 0x0400;
+char idx = 0;
+
+void print(char* msg) {
+    while(*msg)
+        SCREEN[idx++] = *msg++;
+}
+
+