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, 21 insertions, 0 deletions

diff --git a/compiler/rustc_error_codes/src/error_codes/E0565.md b/compiler/rustc_error_codes/src/error_codes/E0565.md
new file mode 100644
index 000000000..d5bba941c
--- /dev/null
+++ b/compiler/rustc_error_codes/src/error_codes/E0565.md
@@ -0,0 +1,21 @@
+A literal was used in a built-in attribute that doesn't support literals.
+
+Erroneous code example:
+
+```compile_fail,E0565
+#[repr("C")] // error: meta item in `repr` must be an identifier
+struct Repr {}
+
+fn main() {}
+```
+
+Literals in attributes are new and largely unsupported in built-in attributes.
+Work to support literals where appropriate is ongoing. Try using an unquoted
+name instead:
+
+```
+#[repr(C)] // ok!
+struct Repr {}
+
+fn main() {}
+```