From 3b8f2fe5f5824642664aa6686c6aeb7ca4b2e244 Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipensp@gmail.com>
Date: Sat, 10 May 2025 11:36:51 -0300
Subject: [PATCH] cgen: fix array init with interface element type (fix #24442)
 (#24454)

---
 vlib/v/gen/c/array.v                          |  4 ++--
 .../interfaces/interface_array_init_test.v    | 20 +++++++++++++++++++
 2 files changed, 22 insertions(+), 2 deletions(-)
 create mode 100644 vlib/v/tests/interfaces/interface_array_init_test.v

diff --git a/vlib/v/gen/c/array.v b/vlib/v/gen/c/array.v
index 22ed01831..cb17fcff1 100644
--- a/vlib/v/gen/c/array.v
+++ b/vlib/v/gen/c/array.v
@@ -45,12 +45,12 @@ fn (mut g Gen) array_init(node ast.ArrayInit, var_name string) {
 			g.writeln('')
 			g.write('\t\t')
 		}
-		is_sumtype := elem_sym.kind == .sum_type
+		is_iface_or_sumtype := elem_sym.kind in [.sum_type, .interface]
 		for i, expr in node.exprs {
 			expr_type := if node.expr_types.len > i { node.expr_types[i] } else { node.elem_type }
 			if expr_type == ast.string_type
 				&& expr !in [ast.IndexExpr, ast.CallExpr, ast.StringLiteral, ast.StringInterLiteral, ast.InfixExpr] {
-				if is_sumtype {
+				if is_iface_or_sumtype {
 					g.expr_with_cast(expr, expr_type, node.elem_type)
 				} else {
 					g.write('string_clone(')
diff --git a/vlib/v/tests/interfaces/interface_array_init_test.v b/vlib/v/tests/interfaces/interface_array_init_test.v
new file mode 100644
index 000000000..3d38815f2
--- /dev/null
+++ b/vlib/v/tests/interfaces/interface_array_init_test.v
@@ -0,0 +1,20 @@
+module main
+
+interface Value {}
+
+struct CreateRegionData {
+	name          string
+	currency_code string
+	tax_rate      f32
+	tax_code      string @[omitempty]
+	countries     []string
+	includes_tax  bool @[omitempty]
+}
+
+fn test_main() {
+	rd := CreateRegionData{}
+	id := 'bro'
+	the_array := [Value(id), rd.name]
+	println(the_array)
+	assert '${the_array}' == "[Value('bro'), Value('')]"
+}
-- 
2.39.5