From 92aba98b057a240b41dfe8f3a77c699addcf505d Mon Sep 17 00:00:00 2001
From: Krchi <997054144@qq.com>
Date: Mon, 12 Jan 2026 15:27:26 +0800
Subject: [PATCH] cgen: fix fixed array of option with different size (#26326)

---
 vlib/v/gen/c/cgen.v                                         | 2 ++
 .../builtin_arrays/fixed_array_of_option_multi_size_test.v  | 6 ++++++
 2 files changed, 8 insertions(+)
 create mode 100644 vlib/v/tests/builtin_arrays/fixed_array_of_option_multi_size_test.v

diff --git a/vlib/v/gen/c/cgen.v b/vlib/v/gen/c/cgen.v
index d02a8b7b0..12e568a08 100644
--- a/vlib/v/gen/c/cgen.v
+++ b/vlib/v/gen/c/cgen.v
@@ -1787,6 +1787,8 @@ pub fn (mut g Gen) write_typedef_types() {
 										g.typedefs.writeln('typedef struct ${styp_elem} ${styp_elem};')
 										g.type_definitions.writeln('${g.option_type_text(styp_elem,
 											elem_base)};')
+									}
+									if styp !in g.done_options {
 										g.type_definitions.writeln('typedef ${fixed} ${styp} [${len}];')
 										g.done_options << styp
 									}
diff --git a/vlib/v/tests/builtin_arrays/fixed_array_of_option_multi_size_test.v b/vlib/v/tests/builtin_arrays/fixed_array_of_option_multi_size_test.v
new file mode 100644
index 000000000..94135f3d4
--- /dev/null
+++ b/vlib/v/tests/builtin_arrays/fixed_array_of_option_multi_size_test.v
@@ -0,0 +1,6 @@
+fn test_main() {
+	a := [?int(1), 0, 2]!
+	b := [?int(none), none]!
+	assert '${a}' == '${[?int(1), 0, 2]!}'
+	assert '${b}' == '${[?int(none), none]!}'
+}
-- 
2.39.5