Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 15 insertions, 0 deletions

diff --git a/src/test/ui/proc-macro/illegal-proc-macro-derive-use.rs b/src/test/ui/proc-macro/illegal-proc-macro-derive-use.rs
new file mode 100644
index 000000000..4efd9e952
--- /dev/null
+++ b/src/test/ui/proc-macro/illegal-proc-macro-derive-use.rs
@@ -0,0 +1,15 @@
+extern crate proc_macro;
+
+#[proc_macro_derive(Foo)]
+//~^ ERROR: only usable with crates of the `proc-macro` crate type
+pub fn foo(a: proc_macro::TokenStream) -> proc_macro::TokenStream {
+    a
+}
+
+// Issue #37590
+#[proc_macro_derive(Foo)]
+//~^ ERROR: the `#[proc_macro_derive]` attribute may only be used on bare functions
+pub struct Foo {
+}
+
+fn main() {}