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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-17 12:02:58 +0000
commit698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch)
tree173a775858bd501c378080a10dca74132f05bc50 /src/test/ui/issues/issue-22992.rs
parentInitial commit. (diff)
downloadrustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz
rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/test/ui/issues/issue-22992.rs')
-rw-r--r--src/test/ui/issues/issue-22992.rs75
1 files changed, 75 insertions, 0 deletions
diff --git a/src/test/ui/issues/issue-22992.rs b/src/test/ui/issues/issue-22992.rs
new file mode 100644
index 000000000..292a0ae29
--- /dev/null
+++ b/src/test/ui/issues/issue-22992.rs
@@ -0,0 +1,75 @@
+// run-pass
+
+struct X { val: i32 }
+impl std::ops::Deref for X {
+ type Target = i32;
+ fn deref(&self) -> &i32 { &self.val }
+}
+
+
+trait M { fn m(self); }
+impl M for i32 { fn m(self) { println!("i32::m()"); } }
+impl M for X { fn m(self) { println!("X::m()"); } }
+impl<'a> M for &'a X { fn m(self) { println!("&X::m()"); } }
+impl<'a, 'b> M for &'a &'b X { fn m(self) { println!("&&X::m()"); } }
+impl<'a, 'b, 'c> M for &'a &'b &'c X { fn m(self) { println!("&&&X::m()"); } }
+
+trait RefM { fn refm(&self); }
+impl RefM for i32 { fn refm(&self) { println!("i32::refm()"); } }
+impl RefM for X { fn refm(&self) { println!("X::refm()"); } }
+impl<'a> RefM for &'a X { fn refm(&self) { println!("&X::refm()"); } }
+impl<'a, 'b> RefM for &'a &'b X { fn refm(&self) { println!("&&X::refm()"); } }
+impl<'a, 'b, 'c> RefM for &'a &'b &'c X { fn refm(&self) { println!("&&&X::refm()"); } }
+
+struct Y { val: i32 }
+impl std::ops::Deref for Y {
+ type Target = i32;
+ fn deref(&self) -> &i32 { &self.val }
+}
+
+struct Z { val: Y }
+impl std::ops::Deref for Z {
+ type Target = Y;
+ fn deref(&self) -> &Y { &self.val }
+}
+
+struct A;
+impl std::marker::Copy for A {}
+impl Clone for A { fn clone(&self) -> Self { *self } }
+impl M for A { fn m(self) { println!("A::m()"); } }
+impl<'a, 'b, 'c> M for &'a &'b &'c A { fn m(self) { println!("&&&A::m()"); } }
+impl RefM for A { fn refm(&self) { println!("A::refm()"); } }
+impl<'a, 'b, 'c> RefM for &'a &'b &'c A { fn refm(&self) { println!("&&&A::refm()"); } }
+
+fn main() {
+ // I'll use @ to denote left side of the dot operator
+ (*X{val:42}).m(); // i32::refm() , self == @
+ X{val:42}.m(); // X::m() , self == @
+ (&X{val:42}).m(); // &X::m() , self == @
+ (&&X{val:42}).m(); // &&X::m() , self == @
+ (&&&X{val:42}).m(); // &&&X:m() , self == @
+ (&&&&X{val:42}).m(); // &&&X::m() , self == *@
+ (&&&&&X{val:42}).m(); // &&&X::m() , self == **@
+
+ (*X{val:42}).refm(); // i32::refm() , self == @
+ X{val:42}.refm(); // X::refm() , self == @
+ (&X{val:42}).refm(); // X::refm() , self == *@
+ (&&X{val:42}).refm(); // &X::refm() , self == *@
+ (&&&X{val:42}).refm(); // &&X::refm() , self == *@
+ (&&&&X{val:42}).refm(); // &&&X::refm(), self == *@
+ (&&&&&X{val:42}).refm(); // &&&X::refm(), self == **@
+
+ Y{val:42}.refm(); // i32::refm() , self == *@
+ Z{val:Y{val:42}}.refm(); // i32::refm() , self == **@
+
+ A.m(); // A::m() , self == @
+ // without the Copy trait, (&A).m() would be a compilation error:
+ // cannot move out of borrowed content
+ (&A).m(); // A::m() , self == *@
+ (&&A).m(); // &&&A::m() , self == &@
+ (&&&A).m(); // &&&A::m() , self == @
+ A.refm(); // A::refm() , self == @
+ (&A).refm(); // A::refm() , self == *@
+ (&&A).refm(); // A::refm() , self == **@
+ (&&&A).refm(); // &&&A::refm(), self == @
+}