From 906c52743aa60002abadae2a9f19673bdad3cf80 Mon Sep 17 00:00:00 2001
From: b-naber <bn263@gmx.de>
Date: Wed, 2 Nov 2022 13:49:42 +0100
Subject: add tests

---
 src/test/ui/mir/field-ty-ascription.rs | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 src/test/ui/mir/field-ty-ascription.rs

(limited to 'src/test')

diff --git a/src/test/ui/mir/field-ty-ascription.rs b/src/test/ui/mir/field-ty-ascription.rs
new file mode 100644
index 00000000000..4147f05776a
--- /dev/null
+++ b/src/test/ui/mir/field-ty-ascription.rs
@@ -0,0 +1,21 @@
+// build-pass
+
+struct Foo<T>(T); // `T` is covariant.
+
+fn foo<'b>(x: Foo<for<'a> fn(&'a ())>) {
+    let Foo(y): Foo<fn(&'b ())> = x;
+}
+
+fn foo_nested<'b>(x: Foo<Foo<for<'a> fn(&'a ())>>) {
+    let Foo(Foo(y)): Foo<Foo<fn(&'b ())>> = x;
+}
+
+fn tuple<'b>(x: (u32, for<'a> fn(&'a ()))) {
+    let (_, y): (u32, fn(&'b ())) = x;
+}
+
+fn tuple_nested<'b>(x: (u32, (u32, for<'a> fn(&'a ())))) {
+    let (_, (_, y)): (u32, (u32, fn(&'b ()))) = x;
+}
+
+fn main() {}
-- 
cgit 1.4.1-3-g733a5


From 2ef8308687f57335e117fdfa7d92002cf6f53eda Mon Sep 17 00:00:00 2001
From: b-naber <bn263@gmx.de>
Date: Wed, 2 Nov 2022 22:05:19 +0100
Subject: add more tests

---
 src/test/ui/mir/field-ty-ascription-enums.rs | 15 +++++++++++++++
 src/test/ui/mir/field-ty-ascription.rs       | 16 ++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 src/test/ui/mir/field-ty-ascription-enums.rs

(limited to 'src/test')

diff --git a/src/test/ui/mir/field-ty-ascription-enums.rs b/src/test/ui/mir/field-ty-ascription-enums.rs
new file mode 100644
index 00000000000..179af617090
--- /dev/null
+++ b/src/test/ui/mir/field-ty-ascription-enums.rs
@@ -0,0 +1,15 @@
+// build-pass
+
+enum Foo<T> {
+    Var(T),
+} // `T` is covariant.
+
+fn foo<'b>(x: Foo<for<'a> fn(&'a ())>) {
+    let Foo::Var(x): Foo<fn(&'b ())> = x;
+}
+
+fn foo_nested<'b>(x: Foo<Foo<for<'a> fn(&'a ())>>) {
+    let Foo::Var(Foo::Var(x)): Foo<Foo<fn(&'b ())>> = x;
+}
+
+fn main() {}
diff --git a/src/test/ui/mir/field-ty-ascription.rs b/src/test/ui/mir/field-ty-ascription.rs
index 4147f05776a..178c7916bc5 100644
--- a/src/test/ui/mir/field-ty-ascription.rs
+++ b/src/test/ui/mir/field-ty-ascription.rs
@@ -2,6 +2,22 @@
 
 struct Foo<T>(T); // `T` is covariant.
 
+struct Bar<T> {
+    x: T,
+} // `T` is covariant.
+
+fn bar<'b>(x: Bar<for<'a> fn(&'a ())>) {
+    let Bar { x }: Bar<fn(&'b ())> = x;
+}
+
+fn bar_nested<'b>(x: Bar<Bar<for<'a> fn(&'a ())>>) {
+    let Bar { x: Bar { x } }: Bar<Bar<fn(&'b ())>> = x;
+}
+
+fn bar_foo_nested<'b>(x: Bar<Foo<for<'a> fn(&'a ())>>) {
+    let Bar { x: Foo ( x ) }: Bar<Foo<fn(&'b ())>> = x;
+}
+
 fn foo<'b>(x: Foo<for<'a> fn(&'a ())>) {
     let Foo(y): Foo<fn(&'b ())> = x;
 }
-- 
cgit 1.4.1-3-g733a5


From 4d00026edd315a05c4aff27c8d8cb233a6e95d92 Mon Sep 17 00:00:00 2001
From: b-naber <bn263@gmx.de>
Date: Tue, 22 Nov 2022 22:08:09 +0100
Subject: add invariance test

---
 src/test/ui/mir/field-projection-invariant.rs | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/test/ui/mir/field-projection-invariant.rs

(limited to 'src/test')

diff --git a/src/test/ui/mir/field-projection-invariant.rs b/src/test/ui/mir/field-projection-invariant.rs
new file mode 100644
index 00000000000..b5d6add043c
--- /dev/null
+++ b/src/test/ui/mir/field-projection-invariant.rs
@@ -0,0 +1,24 @@
+// build-pass
+struct Inv<'a>(&'a mut &'a ());
+enum Foo<T> {
+    Bar,
+    Var(T),
+}
+type Supertype = Foo<for<'a> fn(Inv<'a>, Inv<'a>)>;
+
+fn foo(x: Foo<for<'a, 'b> fn(Inv<'a>, Inv<'b>)>) {
+    match x {
+        Supertype::Bar => {}
+        Supertype::Var(x) => {}
+    }
+}
+
+fn foo_nested(x: Foo<Foo<for<'a, 'b> fn(Inv<'a>, Inv<'b>)>>) {
+    match x {
+        Foo::Bar => {}
+        Foo::Var(Supertype::Bar) => {}
+        Foo::Var(Supertype::Var(x)) => {}
+    }
+}
+
+fn main() {}
-- 
cgit 1.4.1-3-g733a5