From 17fc31b7462eef2ac93e26b2ce5255833b7417da Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipensp@gmail.com>
Date: Sun, 2 Mar 2025 05:18:56 -0300
Subject: [PATCH] cgen: fix nested option fixed array (fix #23708) (#23845)

---
 vlib/v/gen/c/cgen.v                           |  1 +
 .../options/option_nested_fixed_array_test.v  | 35 +++++++++++++++++++
 2 files changed, 36 insertions(+)
 create mode 100644 vlib/v/tests/options/option_nested_fixed_array_test.v

diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index bb5d8a4ced..7b219f6463 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -6610,6 +6610,7 @@ fn (mut g Gen) write_types(symbols []&ast.TypeSymbol) {
 											base)};')
 									}
 								}
+								g.type_definitions.writeln('typedef ${fixed_elem_name} ${styp} [${len}];')
 							} else if !(elem_sym.info is ast.ArrayFixed && elem_sym.info.is_fn_ret) {
 								g.type_definitions.writeln('typedef ${fixed_elem_name} ${styp} [${len}];')
 							}
diff --git a/vlib/v/tests/options/option_nested_fixed_array_test.v b/vlib/v/tests/options/option_nested_fixed_array_test.v
new file mode 100644
index 0000000000..17933d60af
--- /dev/null
+++ b/vlib/v/tests/options/option_nested_fixed_array_test.v
@@ -0,0 +1,35 @@
+struct Test {
+	board [2][2]?Piece
+}
+
+struct Piece {
+	white bool
+}
+
+fn test_main() {
+	t := Test{
+		board: [[?Piece{
+			white: false
+		}, ?Piece{
+			white: false
+		}]!, [?Piece{
+			white: true
+		}, ?Piece{
+			white: true
+		}]!]!
+	}
+	assert '${t.board[1][1]}' == 'Option(Piece{
+    white: true
+})'
+	assert t.str() == 'Test{
+    board: [[Option(Piece{
+    white: false
+}), Option(Piece{
+    white: false
+})], [Option(Piece{
+    white: true
+}), Option(Piece{
+    white: true
+})]]
+}'
+}