2 files changed, 97 insertions, 6 deletions

diff --git a/crates/hir_ty/src/infer/expr.rs b/crates/hir_ty/src/infer/expr.rs
index eab8fac91..79a732106 100644
--- a/crates/hir_ty/src/infer/expr.rs
+++ b/crates/hir_ty/src/infer/expr.rs
@@ -805,7 +805,7 @@ impl<'a> InferenceContext<'a> {
                     None => self.table.new_float_var(),
                 },
             },
-            Expr::MacroStmts { tail } => self.infer_expr(*tail, expected),
+            Expr::MacroStmts { tail } => self.infer_expr_inner(*tail, expected),
         };
         // use a new type variable if we got unknown here
         let ty = self.insert_type_vars_shallow(ty);
diff --git a/crates/hir_ty/src/tests/coercion.rs b/crates/hir_ty/src/tests/coercion.rs
index bb568ea37..6dac7e103 100644
--- a/crates/hir_ty/src/tests/coercion.rs
+++ b/crates/hir_ty/src/tests/coercion.rs
@@ -832,11 +832,9 @@ fn coerce_unsize_super_trait_cycle() {
     );
 }
 
-#[ignore]
 #[test]
 fn coerce_unsize_generic() {
-    // FIXME: Implement this
-    // https://doc.rust-lang.org/reference/type-coercions.html#unsized-coercions
+    // FIXME: fix the type mismatches here
     check_infer_with_mismatches(
         r#"
         #[lang = "unsize"]
@@ -854,8 +852,58 @@ fn coerce_unsize_generic() {
             let _: &Bar<[usize]> = &Bar(Foo { t: [1, 2, 3] });
         }
         "#,
-        expect![[r"
-        "]],
+        expect![[r#"
+            209..317 '{     ... }); }': ()
+            219..220 '_': &Foo<[usize]>
+            238..259 '&Foo {..., 3] }': &Foo<[usize]>
+            239..259 'Foo { ..., 3] }': Foo<[usize]>
+            248..257 '[1, 2, 3]': [usize; 3]
+            249..250 '1': usize
+            252..253 '2': usize
+            255..256 '3': usize
+            269..270 '_': &Bar<[usize]>
+            288..314 '&Bar(F... 3] })': &Bar<[i32; 3]>
+            289..292 'Bar': Bar<[i32; 3]>(Foo<[i32; 3]>) -> Bar<[i32; 3]>
+            289..314 'Bar(Fo... 3] })': Bar<[i32; 3]>
+            293..313 'Foo { ..., 3] }': Foo<[i32; 3]>
+            302..311 '[1, 2, 3]': [i32; 3]
+            303..304 '1': i32
+            306..307 '2': i32
+            309..310 '3': i32
+            248..257: expected [usize], got [usize; 3]
+            288..314: expected &Bar<[usize]>, got &Bar<[i32; 3]>
+        "#]],
+    );
+}
+
+#[test]
+fn coerce_unsize_apit() {
+    // FIXME: #8984
+    check_infer_with_mismatches(
+        r#"
+#[lang = "sized"]
+pub trait Sized {}
+#[lang = "unsize"]
+pub trait Unsize<T> {}
+#[lang = "coerce_unsized"]
+pub trait CoerceUnsized<T> {}
+
+impl<T: Unsize<U>, U> CoerceUnsized<&U> for &T {}
+
+trait Foo {}
+
+fn test(f: impl Foo) {
+    let _: &dyn Foo = &f;
+}
+        "#,
+        expect![[r#"
+            210..211 'f': impl Foo
+            223..252 '{     ... &f; }': ()
+            233..234 '_': &dyn Foo
+            247..249 '&f': &impl Foo
+            248..249 'f': impl Foo
+            247..249: expected &dyn Foo, got &impl Foo
+        "#]],
     );
 }
 
@@ -912,3 +960,46 @@ fn test() -> i32 {
         "#,
     )
 }
+
+#[test]
+fn panic_macro() {
+    check_infer_with_mismatches(
+        r#"
+mod panic {
+    #[macro_export]
+    pub macro panic_2015 {
+        () => (
+            $crate::panicking::panic()
+        ),
+    }
+}
+
+mod panicking {
+    pub fn panic() -> ! { loop {} }
+}
+
+#[rustc_builtin_macro = "core_panic"]
+macro_rules! panic {
+    // Expands to either `$crate::panic::panic_2015` or `$crate::panic::panic_2021`
+    // depending on the edition of the caller.
+    ($($arg:tt)*) => {
+        /* compiler built-in */
+    };
+}
+
+fn main() {
+    panic!()
+}
+        "#,
+        expect![[r#"
+            174..185 '{ loop {} }': !
+            176..183 'loop {}': !
+            181..183 '{}': ()
+            !0..24 '$crate...:panic': fn panic() -> !
+            !0..26 '$crate...anic()': !
+            !0..26 '$crate...anic()': !
+            !0..28 '$crate...015!()': !
+            454..470 '{     ...c!() }': ()
+        "#]],
+    );
+}