1 files changed, 43 insertions, 0 deletions
diff --git a/vendor/educe/src/trait_handlers/debug/panic.rs b/vendor/educe/src/trait_handlers/debug/panic.rs
new file mode 100644
index 00000000..a29646a7
--- /dev/null
+++ b/vendor/educe/src/trait_handlers/debug/panic.rs
@@ -0,0 +1,43 @@
+use quote::ToTokens;
+use syn::{spanned::Spanned, Ident, Meta, Variant};
+
+#[inline]
+pub(crate) fn unit_struct_need_name(name: &Ident) -> syn::Error {
+    syn::Error::new(name.span(), "a unit struct needs to have a name")
+}
+
+#[inline]
+pub(crate) fn unit_variant_need_name(variant: &Variant) -> syn::Error {
+    syn::Error::new(
+        variant.span(),
+        "a unit variant which doesn't use an enum name needs to have a name",
+    )
+}
+
+#[inline]
+pub(crate) fn unit_enum_need_name(name: &Ident) -> syn::Error {
+    syn::Error::new(name.span(), "a unit enum needs to have a name")
+}
+
+#[inline]
+pub(crate) fn union_without_unsafe(meta: &Meta) -> syn::Error {
+    let mut s = meta.into_token_stream().to_string().replace(" , ", ", ");
+
+    match s.len() {
+        5 => s.push_str("(unsafe)"),
+        7 => s.insert_str(6, "unsafe"),
+        _ => s.insert_str(6, "unsafe, "),
+    }
+
+    syn::Error::new(
+        meta.span(),
+        format!(
+            "a union's `Debug` implementation may expose uninitialized memory\n* It is \
+             recommended that, for a union where `Debug` is implemented, types that allow \
+             uninitialized memory should not be used in it.\n* If you can ensure that the union \
+             uses no such types, use `#[educe({s})]` to implement the `Debug` trait for it.\n* \
+             The `unsafe` keyword should be placed as the first parameter of the `Debug` \
+             attribute."
+        ),
+    )
+}