ast, parser, checker: check struct implements non interface type (fix #…

…22200) (#22218)
vlang · Sep 16, 2024 · b1ffa4e · b1ffa4e
1 parent ca5f47a
commit b1ffa4e
Show file tree

Hide file tree

Showing 3 changed files with 12 additions and 0 deletions.
diff --git a/vlib/v/checker/struct.v b/vlib/v/checker/struct.v
@@ -350,6 +350,8 @@ fn (mut c Checker) struct_decl(mut node ast.StructDecl) {
 						}
 					}
 				}
+			} else {
+				c.error('`${t_sym.name}` is not an interface type', t.pos)
 			}
 			c.type_implements(struct_type, t.typ, node.pos)
 		}

diff --git a/vlib/v/checker/tests/struct_implements_non_interface_err.out b/vlib/v/checker/tests/struct_implements_non_interface_err.out
@@ -0,0 +1,5 @@
+vlib/v/checker/tests/struct_implements_non_interface_err.vv:1:26: error: `Abcde` is not an interface type
+    1 | struct Walker implements Abcde  {
+      |                          ~~~~~
+    2 |     aaa  string
+    3 | }
diff --git a/vlib/v/checker/tests/struct_implements_non_interface_err.vv b/vlib/v/checker/tests/struct_implements_non_interface_err.vv
@@ -0,0 +1,5 @@
+struct Walker implements Abcde  {
+	aaa  string
+}
+
+fn main() {}