Merge branch 'master' into zen_stdlib

1 files changed, 44 insertions, 0 deletions

diff --git a/test/cases/pointers.zig b/test/cases/pointers.zig
new file mode 100644
index 0000000000..47afb60a2e
--- /dev/null
+++ b/test/cases/pointers.zig
@@ -0,0 +1,44 @@
+const std = @import("std");
+const assert = std.debug.assert;
+
+test "dereference pointer" {
+    comptime testDerefPtr();
+    testDerefPtr();
+}
+
+fn testDerefPtr() void {
+    var x: i32 = 1234;
+    var y = &x;
+    y.* += 1;
+    assert(x == 1235);
+}
+
+test "pointer arithmetic" {
+    var ptr = c"abcd";
+
+    assert(ptr[0] == 'a');
+    ptr += 1;
+    assert(ptr[0] == 'b');
+    ptr += 1;
+    assert(ptr[0] == 'c');
+    ptr += 1;
+    assert(ptr[0] == 'd');
+    ptr += 1;
+    assert(ptr[0] == 0);
+    ptr -= 1;
+    assert(ptr[0] == 'd');
+    ptr -= 1;
+    assert(ptr[0] == 'c');
+    ptr -= 1;
+    assert(ptr[0] == 'b');
+    ptr -= 1;
+    assert(ptr[0] == 'a');
+}
+
+test "double pointer parsing" {
+    comptime assert(PtrOf(PtrOf(i32)) == **i32);
+}
+
+fn PtrOf(comptime T: type) type {
+    return *T;
+}