Rollup merge of rust-lang#66407 - JohnTitor:add-ice-tests, r=Centril

Add more tests for fixed ICEs

Closes rust-lang#36122 (fixed in 1.20.0)
Closes rust-lang#58094 (fixed in rust-lang#66054)
Also, fix mistaken test case, from rust-lang#30904 to rust-lang#30906 (cc @eddyb)

r? @Centril

src/test/ui/extern/issue-36122-accessing-externed-dst.rs

@@ -0,0 +1,6 @@
+fn main() {
+    extern {
+        static symbol: [usize]; //~ ERROR: the size for values of type
+    }
+    println!("{}", symbol[0]);
+}

src/test/ui/extern/issue-36122-accessing-externed-dst.stderr

@@ -0,0 +1,12 @@
+error[E0277]: the size for values of type `[usize]` cannot be known at compilation time
+  --> $DIR/issue-36122-accessing-externed-dst.rs:3:24
+   |
+LL |         static symbol: [usize];
+   |                        ^^^^^^^ doesn't have a size known at compile-time
+   |
+   = help: the trait `std::marker::Sized` is not implemented for `[usize]`
+   = note: to learn more, visit <https://doc.rust-lang.org/book/ch19-04-advanced-types.html#dynamically-sized-types-and-the-sized-trait>
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0277`.

src/test/ui/parser/issue-58094-missing-right-square-bracket.rs

@@ -0,0 +1,4 @@
+// Fixed in #66054.
+// ignore-tidy-trailing-newlines
+// error-pattern: aborting due to 2 previous errors
+#[Ѕ

src/test/ui/parser/issue-58094-missing-right-square-bracket.stderr

@@ -0,0 +1,16 @@
+error: this file contains an un-closed delimiter
+  --> $DIR/issue-58094-missing-right-square-bracket.rs:4:4
+   |
+LL | #[Ѕ
+   |  - ^
+   |  |
+   |  un-closed delimiter
+
+error: expected item after attributes
+  --> $DIR/issue-58094-missing-right-square-bracket.rs:4:4
+   |
+LL | #[Ѕ
+   |    ^
+
+error: aborting due to 2 previous errors
+

src/test/ui/unboxed-closures/issue-30906.nll.stderr

@@ -0,0 +1,8 @@
+error: higher-ranked subtype error
+  --> $DIR/issue-30906.rs:15:5
+   |
+LL |     test(Compose(f, |_| {}));
+   |     ^^^^^^^^^^^^^^^^^^^^^^^^
+
+error: aborting due to previous error
+

src/test/ui/unboxed-closures/issue-30906.rs

@@ -0,0 +1,18 @@
+#![feature(fn_traits, unboxed_closures)]
+
+fn test<F: for<'x> FnOnce<(&'x str,)>>(_: F) {}
+
+struct Compose<F,G>(F,G);
+impl<T,F,G> FnOnce<(T,)> for Compose<F,G>
+where F: FnOnce<(T,)>, G: FnOnce<(F::Output,)> {
+    type Output = G::Output;
+    extern "rust-call" fn call_once(self, (x,): (T,)) -> G::Output {
+        (self.1)((self.0)(x))
+    }
+}
+
+fn bad<T>(f: fn(&'static str) -> T) {
+    test(Compose(f, |_| {})); //~ ERROR: mismatched types
+}
+
+fn main() {}

src/test/ui/unboxed-closures/issue-30906.stderr

@@ -0,0 +1,12 @@
+error[E0308]: mismatched types
+  --> $DIR/issue-30906.rs:15:5
+   |
+LL |     test(Compose(f, |_| {}));
+   |     ^^^^ one type is more general than the other
+   |
+   = note: expected type `std::ops::FnOnce<(&'x str,)>`
+              found type `std::ops::FnOnce<(&str,)>`
+
+error: aborting due to previous error
+
+For more information about this error, try `rustc --explain E0308`.