From 610558d46763924c93f9c50243ae2089910dfad9 Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipensp@gmail.com>
Date: Fri, 13 Dec 2024 03:14:52 -0300
Subject: [PATCH] cgen: fix array fixed auto str on `-cstrict` (#23144)

---
 vlib/v/gen/c/auto_str_methods.v                     | 2 +-
 vlib/v/gen/c/testdata/fixed_arr_compare.c.must_have | 4 ++++
 vlib/v/gen/c/testdata/fixed_arr_compare.vv          | 4 ++++
 3 files changed, 9 insertions(+), 1 deletion(-)
 create mode 100644 vlib/v/gen/c/testdata/fixed_arr_compare.c.must_have
 create mode 100644 vlib/v/gen/c/testdata/fixed_arr_compare.vv

diff --git a/vlib/v/gen/c/auto_str_methods.v b/vlib/v/gen/c/auto_str_methods.v
index 7e2dbf84c..2e4aaa4f1 100644
--- a/vlib/v/gen/c/auto_str_methods.v
+++ b/vlib/v/gen/c/auto_str_methods.v
@@ -714,7 +714,7 @@ fn (mut g Gen) gen_str_for_array_fixed(info ast.ArrayFixed, styp string, str_fn_
 	elem_str_fn_name := g.get_str_fn(typ)
 	def_arg := if info.is_fn_ret { '${g.styp(typ)} a[${info.size}]' } else { '${styp} a' }
 
-	g.definitions.writeln('string ${str_fn_name}(); // auto')
+	g.definitions.writeln('string ${str_fn_name}(${def_arg}); // auto')
 	g.auto_str_funcs.writeln('string ${str_fn_name}(${def_arg}) { return indent_${str_fn_name}(a, 0);}')
 	g.definitions.writeln('string indent_${str_fn_name}(${def_arg}, int indent_count); // auto')
 	g.auto_str_funcs.writeln('string indent_${str_fn_name}(${def_arg}, int indent_count) {')
diff --git a/vlib/v/gen/c/testdata/fixed_arr_compare.c.must_have b/vlib/v/gen/c/testdata/fixed_arr_compare.c.must_have
new file mode 100644
index 000000000..cdde45f46
--- /dev/null
+++ b/vlib/v/gen/c/testdata/fixed_arr_compare.c.must_have
@@ -0,0 +1,4 @@
+bool Array_u8_contains(Array_u8 a, u8 v); // auto
+string Array_fixed_int_2_str(Array_fixed_int_2 a); // auto
+string indent_Array_fixed_int_2_str(Array_fixed_int_2 a, int indent_count); // auto
+bool Array_fixed_int_2_arr_eq(Array_fixed_int_2 a, Array_fixed_int_2 b); // auto
diff --git a/vlib/v/gen/c/testdata/fixed_arr_compare.vv b/vlib/v/gen/c/testdata/fixed_arr_compare.vv
new file mode 100644
index 000000000..ba9c393c6
--- /dev/null
+++ b/vlib/v/gen/c/testdata/fixed_arr_compare.vv
@@ -0,0 +1,4 @@
+fn main() {
+	a := [1, 2]!
+	assert a == a
+}
-- 
2.39.5