cgen: fix global struct init on tcc (fix #22300) (#22350)

vlib/v/gen/c/cgen.v

@@ -7353,6 +7353,11 @@ fn (mut g Gen) type_default(typ_ ast.Type) string {
 			} else {
 				'{'
 			}
+			$if windows {
+				if !typ.has_flag(.shared_f) && g.inside_global_decl {
+					init_str = '(${g.typ(typ)}){'
+				}
+			}
 			if sym.language in [.c, .v] {
 				for field in info.fields {
 					field_sym := g.table.sym(field.typ)

vlib/v/gen/c/testdata/global_initializer_windows.must_have

@@ -0,0 +1 @@
+Array_fixed_main__Foo_3  g_test_foo = {(main__Foo){.foo = 0,.bar = (main___VAnonStruct1){.a = 0,.b = 0,},}, (main__Foo){.foo = 0,.bar = (main___VAnonStruct1){.a = 0,.b = 0,},}, (main__Foo){.foo = 0,.bar = (main___VAnonStruct1){.a = 0,.b = 0,},}}; // global4

vlib/v/gen/c/testdata/global_initializer_windows.vv

@@ -0,0 +1,11 @@
+// vtest vflags: -enable-globals
+
+struct Foo {
+	foo int
+	bar struct {
+		a int
+		b f64
+	}
+}
+
+__global g_test_foo = [3]Foo{}

vlib/v/tests/global_init_test.v

@@ -0,0 +1,23 @@
+@[has_globals]
+module main
+
+interface IGameObject {
+mut:
+	name string
+}
+
+struct Game {
+mut:
+	objects        []IGameObject
+	delete_objects []IGameObject
+}
+
+__global (
+	game Game
+)
+
+fn test_main() {
+	println('game: ${game}')
+	assert game.objects.len == 0
+	assert game.delete_objects.len == 0
+}