1 files changed, 7 insertions, 1 deletions
diff --git a/lib/std/builtin.zig b/lib/std/builtin.zig
index ba5801e936..3675a90257 100644
--- a/lib/std/builtin.zig
+++ b/lib/std/builtin.zig
@@ -730,10 +730,16 @@ pub const CompilerBackend = enum(u64) {
 /// therefore must be kept in sync with the compiler implementation.
 pub const TestFn = struct {
     name: []const u8,
-    func: fn () anyerror!void,
+    func: testFnProto,
     async_frame_size: ?usize,
 };
 
+/// stage1 is *wrong*. It is not yet updated to support the new function type semantics.
+const testFnProto = switch (builtin.zig_backend) {
+    .stage1 => fn () anyerror!void, // wrong!
+    else => *const fn () anyerror!void,
+};
+
 /// This function type is used by the Zig language code generation and
 /// therefore must be kept in sync with the compiler implementation.
 pub const PanicFn = fn ([]const u8, ?*StackTrace) noreturn;