From 1b812f6bdfe9d3d76f31bb0057f96157843f9bd6 Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipensp@gmail.com>
Date: Mon, 30 Sep 2024 23:03:51 -0300
Subject: [PATCH] cgen: fix global struct init on tcc (fix #22300) (#22350)

---
 vlib/v/gen/c/cgen.v                           |  5 ++++
 ...ave => global_initializer_nix.c.must_have} |  0
 ...itializer.vv => global_initializer_nix.vv} |  0
 .../global_initializer_windows.must_have      |  1 +
 .../c/testdata/global_initializer_windows.vv  | 11 +++++++++
 vlib/v/tests/global_init_test.v               | 23 +++++++++++++++++++
 6 files changed, 40 insertions(+)
 rename vlib/v/gen/c/testdata/{global_initializer.c.must_have => global_initializer_nix.c.must_have} (100%)
 rename vlib/v/gen/c/testdata/{global_initializer.vv => global_initializer_nix.vv} (100%)
 create mode 100644 vlib/v/gen/c/testdata/global_initializer_windows.must_have
 create mode 100644 vlib/v/gen/c/testdata/global_initializer_windows.vv
 create mode 100644 vlib/v/tests/global_init_test.v

diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index 0e15b0cc1008d6..0cf4c8a8a4bc05 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/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)
diff --git a/vlib/v/gen/c/testdata/global_initializer.c.must_have b/vlib/v/gen/c/testdata/global_initializer_nix.c.must_have
similarity index 100%
rename from vlib/v/gen/c/testdata/global_initializer.c.must_have
rename to vlib/v/gen/c/testdata/global_initializer_nix.c.must_have
diff --git a/vlib/v/gen/c/testdata/global_initializer.vv b/vlib/v/gen/c/testdata/global_initializer_nix.vv
similarity index 100%
rename from vlib/v/gen/c/testdata/global_initializer.vv
rename to vlib/v/gen/c/testdata/global_initializer_nix.vv
diff --git a/vlib/v/gen/c/testdata/global_initializer_windows.must_have b/vlib/v/gen/c/testdata/global_initializer_windows.must_have
new file mode 100644
index 00000000000000..383d042d59b133
--- /dev/null
+++ b/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
\ No newline at end of file
diff --git a/vlib/v/gen/c/testdata/global_initializer_windows.vv b/vlib/v/gen/c/testdata/global_initializer_windows.vv
new file mode 100644
index 00000000000000..6f2ad48dc3a8bb
--- /dev/null
+++ b/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{}
diff --git a/vlib/v/tests/global_init_test.v b/vlib/v/tests/global_init_test.v
new file mode 100644
index 00000000000000..675b1d8a20dfee
--- /dev/null
+++ b/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
+}