checker: fix pushing enum value to channel

vlib/v/checker/infix.v

@@ -9,9 +9,15 @@ fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
 		c.expected_type = former_expected_type
 	}
 	mut left_type := c.expr(mut node.left)
+	mut left_sym := c.table.sym(left_type)
 	node.left_type = left_type
 	c.expected_type = left_type
 
+	if left_sym.kind == .chan {
+		chan_info := left_sym.chan_info()
+		c.expected_type = chan_info.elem_type
+	}
+
 	// `if n is ast.Ident && n.is_mut { ... }`
 	if !c.inside_sql && node.op == .and {
 		mut left_node := node.left
@@ -103,7 +109,6 @@ fn (mut c Checker) infix_expr(mut node ast.InfixExpr) ast.Type {
 	}
 	mut right_sym := c.table.sym(right_type)
 	right_final_sym := c.table.final_sym(right_type)
-	mut left_sym := c.table.sym(left_type)
 	left_final_sym := c.table.final_sym(left_type)
 	left_pos := node.left.pos()
 	right_pos := node.right.pos()

vlib/v/tests/concurrency/chan_push_enum_test.v

@@ -0,0 +1,11 @@
+enum FooBar {
+	foo
+	bar
+}
+
+fn test_chan_push_enum() {
+	ch := chan FooBar{cap: 10}
+	ch <- .foo
+	println(<-ch)
+	assert true
+}