Sema: disallow fieldParentPtr and offsetOf on comptime fields

Comptime fields are tied to the type and behave more like declarations
so these operations cannot return anything useful for them.

1 files changed, 16 insertions, 0 deletions

diff --git a/test/cases/compile_errors/fieldParentPtr_on_comptime_field.zig b/test/cases/compile_errors/fieldParentPtr_on_comptime_field.zig
new file mode 100644
index 0000000000..fb95ea691c
--- /dev/null
+++ b/test/cases/compile_errors/fieldParentPtr_on_comptime_field.zig
@@ -0,0 +1,16 @@
+const T = struct {
+    comptime a: u32 = 2,
+};
+pub export fn entry1() void {
+    @offsetOf(T, "a");
+}
+pub export fn entry2() void {
+    @fieldParentPtr(T, "a", undefined);
+}
+
+// error
+// backend=stage2
+// target=native
+//
+// :5:5: error: no offset available for comptime field
+// :8:5: error: cannot get @fieldParentPtr of a comptime field