From 497b613023f5826e94a3cf10483c8ce521f030b6 Mon Sep 17 00:00:00 2001
From: Delyan Angelov <delian66@gmail.com>
Date: Sat, 17 Feb 2024 00:30:57 +0200
Subject: [PATCH] cgen: fix codegen for a.index/1, where a is []Fn (#20849)

---
 vlib/builtin/array_index_test.v | 35 +++++++++++++++++++++++++++++++++
 vlib/v/gen/c/array.v            |  2 +-
 2 files changed, 36 insertions(+), 1 deletion(-)
 create mode 100644 vlib/builtin/array_index_test.v

diff --git a/vlib/builtin/array_index_test.v b/vlib/builtin/array_index_test.v
new file mode 100644
index 00000000000000..913ec4f1d0e365
--- /dev/null
+++ b/vlib/builtin/array_index_test.v
@@ -0,0 +1,35 @@
+fn test_index_of_ints() {
+	ia := [1, 2, 3]
+	ii := ia.index(2)
+	dump(ii)
+	assert ii == 1
+}
+
+fn test_index_of_strings() {
+	sa := ['a', 'b', 'c']
+	si := sa.index('b')
+	dump(si)
+	assert si == 1
+}
+
+fn test_index_of_voidptrs() {
+	pa := [voidptr(123), voidptr(45), voidptr(99)]
+	pi := pa.index(voidptr(45))
+	dump(pi)
+	assert pi == 1
+}
+
+//////////
+
+fn a() {}
+
+fn b() {}
+
+fn c() {}
+
+fn test_index_of_fns() {
+	fa := [a, b, c]
+	fi := fa.index(b)
+	dump(fi)
+	assert fi == 1
+}
diff --git a/vlib/v/gen/c/array.v b/vlib/v/gen/c/array.v
index 43d049c9db4195..8dc4a49655d7ce 100644
--- a/vlib/v/gen/c/array.v
+++ b/vlib/v/gen/c/array.v
@@ -1061,7 +1061,7 @@ fn (mut g Gen) gen_array_index_methods() {
 			ptr_typ := g.equality_fn(info.elem_type)
 			fn_builder.writeln('\t\tif (${ptr_typ}_arr_eq(*pelem, v)) {')
 		} else if elem_sym.kind == .function && !info.elem_type.is_ptr() {
-			fn_builder.writeln('\t\tif ( pelem == v) {')
+			fn_builder.writeln('\t\tif ( *pelem == v) {')
 		} else if elem_sym.kind == .map && !info.elem_type.is_ptr() {
 			ptr_typ := g.equality_fn(info.elem_type)
 			fn_builder.writeln('\t\tif (${ptr_typ}_map_eq((*pelem, v))) {')