Only allow #[serde(default)]` on structs

2026-04-23 08:18:03 +00:00 · 2017-02-21 00:15:00 +01:00
parent 9444db5f19
commit 7bee779514
3 changed files with 24 additions and 1 deletions
@@ -0,0 +1,8 @@
+#[macro_use]
+extern crate serde_derive;
+
+#[derive(Deserialize)] //~ ERROR: proc-macro derive panicked
+#[serde(default)] //~^ HELP: #[serde(default)] can only be used on structs
+struct T(u8, u8);
+
+fn main() { }