Commit 83a2c41cd5

@@ -18,20 +18,16 @@ test "global variable alignment" {
     }
 }
 
-test "slicing array of length 1 can assume runtime index is always zero" {
-    if (builtin.zig_backend != .stage1) return error.SkipZigTest; // TODO
-
-    // TODO reevaluate this test case, because notice that you can
-    // change `runtime_zero` to be `1` and the test still passes for stage1.
-    // Reconsider also this code:
-    // var array: [4]u8 = undefined;
-    // var runtime: usize = 4;
-    // var ptr = array[runtime..];
-    // _ = ptr;
+test "slicing array of length 1 can not assume runtime index is always zero" {
+    if (builtin.zig_backend == .stage1) return error.SkipZigTest;
+    if (builtin.zig_backend == .stage2_wasm) return error.SkipZigTest; // TODO
+    if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
 
-    var runtime_zero: usize = 0;
-    const slice = @as(*align(4) [1]u8, &foo)[runtime_zero..];
-    comptime try expect(@TypeOf(slice) == []align(4) u8);
+    var runtime_index: usize = 1;
+    const slice = @as(*align(4) [1]u8, &foo)[runtime_index..];
+    try expect(@TypeOf(slice) == []u8);
+    try expect(slice.len == 0);
+    try expect(@truncate(u2, @ptrToInt(slice.ptr) - 1) == 0);
 }
 
 test "default alignment allows unspecified in type syntax" {