Implement pointer arithmetic.
diff --git a/libacc/tests/data/pointers.c b/libacc/tests/data/pointers.c
new file mode 100644
index 0000000..461ebeb
--- /dev/null
+++ b/libacc/tests/data/pointers.c
@@ -0,0 +1,15 @@
+int main() {
+ int* pa = (int*) malloc(100);
+ int* pb = pa + 1;
+ int* pc = (int*) 0;
+ *pa = 1;
+ *pb = 2;
+ printf("Pointer difference: %d %d\n", pb - pa, ((int) pb) - ((int) pa));
+ int c = * (pa + 1);
+ printf("Pointer addition: %d\n", c);
+ printf("Pointer comparison to zero: %d %d %d\n", pa == 0, pb == 0, pc == 0);
+ printf("Pointer comparison: %d %d %d %d %d\n", pa < pb, pa == pb, pa > pb, ! pb, ! pc);
+ free(pa);
+ return 0;
+}
+