From e1e6ddce5f8c848bdc74429f97bda36f629fa22e Mon Sep 17 00:00:00 2001
From: kbkpbot <kbkpbot@sina.com>
Date: Thu, 1 Jan 2026 16:46:40 +0800
Subject: [PATCH] markused: add array method map and filter support (fix
 #26233) (#26238)

---
 vlib/v/markused/walker.v                          | 5 +++++
 vlib/v/tests/skip_unused/array_map_filter.run.out | 1 +
 vlib/v/tests/skip_unused/array_map_filter.vv      | 9 +++++++++
 3 files changed, 15 insertions(+)
 create mode 100644 vlib/v/tests/skip_unused/array_map_filter.run.out
 create mode 100644 vlib/v/tests/skip_unused/array_map_filter.vv

diff --git a/vlib/v/markused/walker.v b/vlib/v/markused/walker.v
index 5897a609d..0615a4dcb 100644
--- a/vlib/v/markused/walker.v
+++ b/vlib/v/markused/walker.v
@@ -1703,6 +1703,11 @@ pub fn (mut w Walker) finalize(include_panic_deps bool) {
 		charptr_idx_str := ast.charptr_type_idx.str()
 		w.fn_by_name(charptr_idx_str + '.vstring_literal')
 	}
+	if w.used_arr_method['map'] || w.used_arr_method['filter'] {
+		ref_array_idx_str := int(ast.array_type.ref()).str()
+		w.fn_by_name(ref_array_idx_str + '.push')
+		w.fn_by_name(ref_array_idx_str + '.push_noscan')
+	}
 	// remove unused symbols
 	w.remove_unused_fn_generic_types()
 
diff --git a/vlib/v/tests/skip_unused/array_map_filter.run.out b/vlib/v/tests/skip_unused/array_map_filter.run.out
new file mode 100644
index 000000000..19f86f493
--- /dev/null
+++ b/vlib/v/tests/skip_unused/array_map_filter.run.out
@@ -0,0 +1 @@
+done
diff --git a/vlib/v/tests/skip_unused/array_map_filter.vv b/vlib/v/tests/skip_unused/array_map_filter.vv
new file mode 100644
index 000000000..92e6c3ee4
--- /dev/null
+++ b/vlib/v/tests/skip_unused/array_map_filter.vv
@@ -0,0 +1,9 @@
+fn main() {
+	[u8(5)].map(fn (e u8) u8 {
+		return e
+	})
+	[u8(5)].filter(fn (e u8) bool {
+		return true
+	})
+	println('done')
+}
-- 
2.39.5