From 5c08dc1c0c60a06bbdeeafccecc2ad274c17ae94 Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipensp@gmail.com>
Date: Tue, 24 Dec 2024 20:58:30 -0300
Subject: [PATCH 1/2] fix

---
 vlib/v/gen/c/spawn_and_go.v | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/vlib/v/gen/c/spawn_and_go.v b/vlib/v/gen/c/spawn_and_go.v
index 833b7891bdebb3..26baa76e10ace7 100644
--- a/vlib/v/gen/c/spawn_and_go.v
+++ b/vlib/v/gen/c/spawn_and_go.v
@@ -26,7 +26,7 @@ fn (mut g Gen) spawn_and_go_expr(node ast.SpawnExpr, mode SpawnGoMode) {
 	mut handle := ''
 	tmp := g.new_tmp_var()
 	mut expr := node.call_expr
-	mut name := expr.name
+	mut name := '${expr.name}_${expr.pos.pos}'
 	mut use_tmp_fn_var := false
 	tmp_fn := g.new_tmp_var()
 

From 2c5130f1281ee72f5ab3ce3e7dce87273e7a48a1 Mon Sep 17 00:00:00 2001
From: Felipe Pena <felipensp@gmail.com>
Date: Tue, 24 Dec 2024 21:08:49 -0300
Subject: [PATCH 2/2] fix

---
 vlib/v/gen/c/spawn_and_go.v           |  7 ++++++-
 vlib/v/tests/chan_same_fn_name_test.v | 24 ++++++++++++++++++++++++
 2 files changed, 30 insertions(+), 1 deletion(-)
 create mode 100644 vlib/v/tests/chan_same_fn_name_test.v

diff --git a/vlib/v/gen/c/spawn_and_go.v b/vlib/v/gen/c/spawn_and_go.v
index 26baa76e10ace7..f16285eaba1135 100644
--- a/vlib/v/gen/c/spawn_and_go.v
+++ b/vlib/v/gen/c/spawn_and_go.v
@@ -26,10 +26,15 @@ fn (mut g Gen) spawn_and_go_expr(node ast.SpawnExpr, mode SpawnGoMode) {
 	mut handle := ''
 	tmp := g.new_tmp_var()
 	mut expr := node.call_expr
-	mut name := '${expr.name}_${expr.pos.pos}'
+	mut name := expr.name
 	mut use_tmp_fn_var := false
 	tmp_fn := g.new_tmp_var()
 
+	if expr.is_fn_var {
+		// generate a name different for same var fn name declared in another scope
+		name = '${name}_${node.pos.pos}'
+	}
+
 	if expr.concrete_types.len > 0 {
 		name = g.generic_fn_name(expr.concrete_types, name)
 	} else if expr.is_fn_var && expr.fn_var_type.has_flag(.generic) {
diff --git a/vlib/v/tests/chan_same_fn_name_test.v b/vlib/v/tests/chan_same_fn_name_test.v
new file mode 100644
index 00000000000000..fee61dd9152d81
--- /dev/null
+++ b/vlib/v/tests/chan_same_fn_name_test.v
@@ -0,0 +1,24 @@
+fn a() chan string {
+	ch_out := chan string{}
+	f := fn (a chan string) {
+		a <- 'foo'
+	}
+	spawn f(ch_out)
+	return ch_out
+}
+
+fn b(ch_in chan string) string {
+	f := fn (a chan string, b chan string) {
+		val := <-a
+		{}
+		b <- val
+	}
+	ch_out := chan string{}
+	spawn f(ch_in, ch_out)
+	return <-ch_out
+}
+
+fn test_main() {
+	ch0 := a()
+	assert b(ch0) == 'foo'
+}