diff --git a/src/codegen.cpp b/src/codegen.cpp
index e3aa8c3609..f41ea7abab 100644
--- a/src/codegen.cpp
+++ b/src/codegen.cpp
@@ -8459,6 +8459,8 @@ static Error define_builtin_compile_vars(CodeGen *g) {
     cache_buf(&cache_hash, compiler_id);
     cache_int(&cache_hash, g->build_mode);
     cache_bool(&cache_hash, g->strip_debug_symbols);
+    cache_int(&cache_hash, g->out_type);
+    cache_bool(&cache_hash, g->is_dynamic);
     cache_bool(&cache_hash, g->is_test_build);
     cache_bool(&cache_hash, g->is_single_threaded);
     cache_int(&cache_hash, g->zig_target->is_native);
diff --git a/test/compile_errors.zig b/test/compile_errors.zig
index 65ff8e4540..d3d439aeaf 100644
--- a/test/compile_errors.zig
+++ b/test/compile_errors.zig
@@ -6,6 +6,13 @@ pub fn addCases(cases: *tests.CompileErrorContext) void {
         \\export async fn foo() void {}
     , "tmp.zig:1:1: error: exported function cannot be async");
 
+    cases.addExe(
+        "main missing name",
+        \\pub fn (main) void {}
+    ,
+        "tmp.zig:1:5: error: missing function name",
+    );
+
     cases.addCase(x: {
         var tc = cases.create("@newStackCall on unsupported target",
             \\export fn entry() void {