Add more ICEs (#172)

Author: JohnTitor

ices/51173.rs

@@ -0,0 +1,7 @@
+macro_rules! bug {
+    ( $doc:expr ) => { #[doc = $doc] enum Bug {} }
+}
+
+bug! { (stringify!(bug)) }
+
+fn main() {}

ices/52334.rs

@@ -0,0 +1,8 @@
+type Foo = extern "C" fn(::std::ffi::CStr);
+extern "C" {
+    fn meh(blah: Foo);
+}
+
+fn main() {
+    meh as usize;
+}

ices/59435.rs

@@ -0,0 +1,15 @@
+#![feature(specialization)]
+
+struct MyStruct {}
+
+trait MyTrait {
+    type MyType: Default;
+}
+
+impl MyTrait for i32 {
+    default type MyType = MyStruct;
+}
+
+fn main() {
+    let _x: <i32 as MyTrait>::MyType = <i32 as MyTrait>::MyType::default();
+}

ices/63154-2.rs

@@ -0,0 +1,15 @@
+trait Trait {
+    type Assoc;
+}
+
+impl Trait for () {
+    type Assoc = ();
+}
+
+fn unit() -> impl Into<<() as Trait>::Assoc> {}
+
+pub fn ice() {
+    Into::into(unit());
+}
+
+fn main() {}

ices/65394.rs

@@ -0,0 +1,8 @@
+const _: Vec<i32> = {
+    let x = Vec::<i32>::new();
+    let r = &mut x;
+    let y = x;
+    y 
+};
+
+fn main() {}