Rollup merge of #87134 - BoxyUwU:cgd-self-ty-error, r=lcnr

Make SelfInTyParamDefault wording not be specific to type defaults

r? ```@lcnr```

1 files changed, 16 insertions, 0 deletions

diff --git a/src/test/ui/const-generics/defaults/default-const-param-cannot-reference-self.rs b/src/test/ui/const-generics/defaults/default-const-param-cannot-reference-self.rs
new file mode 100644
index 00000000000..9af84439252
--- /dev/null
+++ b/src/test/ui/const-generics/defaults/default-const-param-cannot-reference-self.rs
@@ -0,0 +1,16 @@
+#![feature(const_generics_defaults)]
+
+struct Struct<const N: usize = { Self; 10 }>;
+//~^ ERROR generic parameters cannot use `Self` in their defaults [E0735]
+
+enum Enum<const N: usize = { Self; 10 }> { }
+//~^ ERROR generic parameters cannot use `Self` in their defaults [E0735]
+
+union Union<const N: usize = { Self; 10 }> { not_empty: () }
+//~^ ERROR generic parameters cannot use `Self` in their defaults [E0735]
+
+fn main() {
+    let _: Struct;
+    let _: Enum;
+    let _: Union;
+}