Auto merge of #128378 - matthiaskrgr:rollup-i3qz9uo, r=matthiaskrgr

Rollup of 4 pull requests

Successful merges:

 - #127574 (elaborate unknowable goals)
 - #128141 (Set branch protection function attributes)
 - #128315 (Fix vita build of std and forbid unsafe in unsafe in the os/vita module)
 - #128339 ([rustdoc] Make the buttons remain when code example is clicked)

r? `@ghost`
`@rustbot` modify labels: rollup

12 files changed, 185 insertions, 2 deletions

diff --git a/tests/codegen/branch-protection-old-llvm.rs b/tests/codegen/branch-protection-old-llvm.rs
new file mode 100644
index 00000000000..bb3c7a4b70c
--- /dev/null
+++ b/tests/codegen/branch-protection-old-llvm.rs
@@ -0,0 +1,45 @@
+// Test that the correct module flags are emitted with different branch protection flags.
+
+//@ revisions: BTI PACRET LEAF BKEY NONE
+//@ needs-llvm-components: aarch64
+//@ [BTI] compile-flags: -Z branch-protection=bti
+//@ [PACRET] compile-flags: -Z branch-protection=pac-ret
+//@ [LEAF] compile-flags: -Z branch-protection=pac-ret,leaf
+//@ [BKEY] compile-flags: -Z branch-protection=pac-ret,b-key
+//@ compile-flags: --target aarch64-unknown-linux-gnu
+//@ ignore-llvm-version: 19 - 99
+
+#![crate_type = "lib"]
+#![feature(no_core, lang_items)]
+#![no_core]
+
+#[lang = "sized"]
+trait Sized {}
+
+// A basic test function.
+pub fn test() {}
+
+// BTI: !"branch-target-enforcement", i32 1
+// BTI: !"sign-return-address", i32 0
+// BTI: !"sign-return-address-all", i32 0
+// BTI: !"sign-return-address-with-bkey", i32 0
+
+// PACRET: !"branch-target-enforcement", i32 0
+// PACRET: !"sign-return-address", i32 1
+// PACRET: !"sign-return-address-all", i32 0
+// PACRET: !"sign-return-address-with-bkey", i32 0
+
+// LEAF: !"branch-target-enforcement", i32 0
+// LEAF: !"sign-return-address", i32 1
+// LEAF: !"sign-return-address-all", i32 1
+// LEAF: !"sign-return-address-with-bkey", i32 0
+
+// BKEY: !"branch-target-enforcement", i32 0
+// BKEY: !"sign-return-address", i32 1
+// BKEY: !"sign-return-address-all", i32 0
+// BKEY: !"sign-return-address-with-bkey", i32 1
+
+// NONE-NOT: branch-target-enforcement
+// NONE-NOT: sign-return-address
+// NONE-NOT: sign-return-address-all
+// NONE-NOT: sign-return-address-with-bkey
diff --git a/tests/codegen/branch-protection.rs b/tests/codegen/branch-protection.rs
index a29ec67d578..2f5ff9e98c2 100644
--- a/tests/codegen/branch-protection.rs
+++ b/tests/codegen/branch-protection.rs
@@ -7,6 +7,7 @@
 //@ [LEAF] compile-flags: -Z branch-protection=pac-ret,leaf
 //@ [BKEY] compile-flags: -Z branch-protection=pac-ret,b-key
 //@ compile-flags: --target aarch64-unknown-linux-gnu
+//@ min-llvm-version: 19
 
 #![crate_type = "lib"]
 #![feature(no_core, lang_items)]
@@ -16,23 +17,32 @@
 trait Sized {}
 
 // A basic test function.
+// CHECK: @test(){{.*}} [[ATTR:#[0-9]+]] {
+#[no_mangle]
 pub fn test() {}
 
+// BTI: attributes [[ATTR]] = {{.*}} "branch-target-enforcement"
 // BTI: !"branch-target-enforcement", i32 1
 // BTI: !"sign-return-address", i32 0
 // BTI: !"sign-return-address-all", i32 0
 // BTI: !"sign-return-address-with-bkey", i32 0
 
+// PACRET: attributes [[ATTR]] = {{.*}} "sign-return-address"="non-leaf"
+// PACRET-SAME: "sign-return-address-key"="a_key"
 // PACRET: !"branch-target-enforcement", i32 0
 // PACRET: !"sign-return-address", i32 1
 // PACRET: !"sign-return-address-all", i32 0
 // PACRET: !"sign-return-address-with-bkey", i32 0
 
+// LEAF: attributes [[ATTR]] = {{.*}} "sign-return-address"="all"
+// LEAF-SAME: "sign-return-address-key"="a_key"
 // LEAF: !"branch-target-enforcement", i32 0
 // LEAF: !"sign-return-address", i32 1
 // LEAF: !"sign-return-address-all", i32 1
 // LEAF: !"sign-return-address-with-bkey", i32 0
 
+// BKEY: attributes [[ATTR]] = {{.*}} "sign-return-address"="non-leaf"
+// BKEY-SAME: "sign-return-address-key"="b_key"
 // BKEY: !"branch-target-enforcement", i32 0
 // BKEY: !"sign-return-address", i32 1
 // BKEY: !"sign-return-address-all", i32 0
diff --git a/tests/rustdoc-gui/code-example-buttons.goml b/tests/rustdoc-gui/code-example-buttons.goml
new file mode 100644
index 00000000000..57ea2970072
--- /dev/null
+++ b/tests/rustdoc-gui/code-example-buttons.goml
@@ -0,0 +1,21 @@
+// This test ensures that code blocks buttons are displayed on hover and when you click on them.
+go-to: "file://" + |DOC_PATH| + "/test_docs/fn.foo.html"
+
+// First we check we "hover".
+move-cursor-to: ".example-wrap"
+assert-css: (".example-wrap .copy-button", { "visibility": "visible" })
+move-cursor-to: ".search-input"
+assert-css: (".example-wrap .copy-button", { "visibility": "hidden" })
+
+// Now we check the click.
+assert-count: (".example-wrap:not(:hover) .button-holder.keep-visible", 0)
+click: ".example-wrap"
+move-cursor-to: ".search-input"
+// It should have a new class and be visible.
+wait-for-count: (".example-wrap:not(:hover) .button-holder.keep-visible", 1)
+wait-for-css: (".example-wrap:not(:hover) .button-holder.keep-visible", { "visibility": "visible" })
+// Clicking again will remove the class.
+click: ".example-wrap"
+move-cursor-to: ".search-input"
+assert-count: (".example-wrap:not(:hover) .button-holder.keep-visible", 0)
+assert-css: (".example-wrap .copy-button", { "visibility": "hidden" })
diff --git a/tests/ui/coherence/normalize-for-errors.next.stderr b/tests/ui/coherence/normalize-for-errors.next.stderr
index 6c56a917741..634a10b7a14 100644
--- a/tests/ui/coherence/normalize-for-errors.next.stderr
+++ b/tests/ui/coherence/normalize-for-errors.next.stderr
@@ -7,6 +7,7 @@ LL |
 LL | impl<S: Iterator> MyTrait<S> for (Box<<(MyType,) as Mirror>::Assoc>, S::Item) {}
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `(Box<(MyType,)>, <_ as Iterator>::Item)`
    |
+   = note: upstream crates may add a new impl of trait `std::clone::Clone` for type `(MyType,)` in future versions
    = note: upstream crates may add a new impl of trait `std::marker::Copy` for type `std::boxed::Box<(MyType,)>` in future versions
 
 error: aborting due to 1 previous error
diff --git a/tests/ui/coherence/normalize-for-errors.rs b/tests/ui/coherence/normalize-for-errors.rs
index 2288118676a..4188389a3ad 100644
--- a/tests/ui/coherence/normalize-for-errors.rs
+++ b/tests/ui/coherence/normalize-for-errors.rs
@@ -18,5 +18,6 @@ impl<S: Iterator> MyTrait<S> for (Box<<(MyType,) as Mirror>::Assoc>, S::Item) {}
 //~^ ERROR conflicting implementations of trait `MyTrait<_>` for type `(Box<(MyType,)>,
 //~| NOTE conflicting implementation for `(Box<(MyType,)>,
 //~| NOTE upstream crates may add a new impl of trait `std::marker::Copy` for type `std::boxed::Box<(MyType,)>` in future versions
+//[next]~| NOTE upstream crates may add a new impl of trait `std::clone::Clone` for type `(MyType,)` in future versions
 
 fn main() {}
diff --git a/tests/ui/coherence/super-traits/super-trait-knowable-1.current.stderr b/tests/ui/coherence/super-traits/super-trait-knowable-1.current.stderr
new file mode 100644
index 00000000000..fb01cf158d9
--- /dev/null
+++ b/tests/ui/coherence/super-traits/super-trait-knowable-1.current.stderr
@@ -0,0 +1,13 @@
+error[E0119]: conflicting implementations of trait `Overlap<_>` for type `()`
+  --> $DIR/super-trait-knowable-1.rs:16:1
+   |
+LL | impl<T, U: Sub<T>> Overlap<T> for U {}
+   | ----------------------------------- first implementation here
+LL | impl<T> Overlap<T> for () {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `()`
+   |
+   = note: downstream crates may implement trait `Sub<_>` for type `()`
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0119`.
diff --git a/tests/ui/coherence/super-traits/super-trait-knowable-1.rs b/tests/ui/coherence/super-traits/super-trait-knowable-1.rs
new file mode 100644
index 00000000000..80df8c19ee5
--- /dev/null
+++ b/tests/ui/coherence/super-traits/super-trait-knowable-1.rs
@@ -0,0 +1,19 @@
+// Added in #124532. While `(): Super` is knowable, `(): Sub<?t>` is not.
+//
+// We therefore elaborate super trait bounds in the implicit negative
+// overlap check.
+
+//@ revisions: current next
+//@ ignore-compare-mode-next-solver (explicit revisions)
+//@[next] compile-flags: -Znext-solver
+//@[next] check-pass
+
+trait Super {}
+trait Sub<T>: Super {}
+
+trait Overlap<T> {}
+impl<T, U: Sub<T>> Overlap<T> for U {}
+impl<T> Overlap<T> for () {}
+//[current]~^ ERROR conflicting implementations
+
+fn main() {}
diff --git a/tests/ui/coherence/super-traits/super-trait-knowable-2.rs b/tests/ui/coherence/super-traits/super-trait-knowable-2.rs
new file mode 100644
index 00000000000..d1f2e8d1c1a
--- /dev/null
+++ b/tests/ui/coherence/super-traits/super-trait-knowable-2.rs
@@ -0,0 +1,33 @@
+// A regression test for pyella-0.1.5 which broke when
+// enabling the new solver in coherence.
+//
+// `Tensor: TensorValue` is knowable while `Tensor: TensorOp<?t2>`
+// may be implemented downstream. We previously didn't check the
+// super trait bound in coherence, causing these impls to overlap.
+//
+// However, we did fail to normalize `<Tensor as TensorValue::Unmasked`
+// which caused the old solver to emit a `Tensor: TensorValue` goal in
+// `fn normalize_to_error` which then failed, causing this test to pass.
+
+//@ revisions: current next
+//@ ignore-compare-mode-next-solver (explicit revisions)
+//@[next] compile-flags: -Znext-solver
+//@ check-pass
+
+pub trait TensorValue {
+    type Unmasked;
+}
+
+trait TensorCompare<T> {}
+pub trait TensorOp<T>: TensorValue {}
+
+pub struct Tensor;
+impl<T2> TensorCompare<T2> for Tensor {}
+impl<T1, T2> TensorCompare<T2> for T1
+where
+    T1: TensorOp<T2>,
+    T1::Unmasked: Sized,
+{}
+
+
+fn main() {}
diff --git a/tests/ui/coherence/super-traits/super-trait-knowable-3.current.stderr b/tests/ui/coherence/super-traits/super-trait-knowable-3.current.stderr
new file mode 100644
index 00000000000..542edb8b7f6
--- /dev/null
+++ b/tests/ui/coherence/super-traits/super-trait-knowable-3.current.stderr
@@ -0,0 +1,13 @@
+error[E0119]: conflicting implementations of trait `Overlap<_>` for type `()`
+  --> $DIR/super-trait-knowable-3.rs:19:1
+   |
+LL | impl<T, U: Bound<W<T>>> Overlap<T> for U {}
+   | ---------------------------------------- first implementation here
+LL | impl<T> Overlap<T> for () {}
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^ conflicting implementation for `()`
+   |
+   = note: downstream crates may implement trait `Sub<_>` for type `()`
+
+error: aborting due to 1 previous error
+
+For more information about this error, try `rustc --explain E0119`.
diff --git a/tests/ui/coherence/super-traits/super-trait-knowable-3.rs b/tests/ui/coherence/super-traits/super-trait-knowable-3.rs
new file mode 100644
index 00000000000..295d7ac48d8
--- /dev/null
+++ b/tests/ui/coherence/super-traits/super-trait-knowable-3.rs
@@ -0,0 +1,22 @@
+// Unlike in `super-trait-knowable-1.rs`, the knowable
+// super trait bound is in a nested goal so this would not
+// compile if we were to only elaborate root goals.
+
+//@ revisions: current next
+//@ ignore-compare-mode-next-solver (explicit revisions)
+//@[next] compile-flags: -Znext-solver
+//@[next] check-pass
+
+trait Super {}
+trait Sub<T>: Super {}
+
+struct W<T>(T);
+trait Bound<T> {}
+impl<T: Sub<U>, U> Bound<W<U>> for T {}
+
+trait Overlap<T> {}
+impl<T, U: Bound<W<T>>> Overlap<T> for U {}
+impl<T> Overlap<T> for () {}
+//[current]~^ ERROR conflicting implementations of trait `Overlap<_>` for type `()`
+
+fn main() {}
diff --git a/tests/ui/issues/issue-48728.stderr b/tests/ui/issues/issue-48728.current.stderr
index 6b4247f1d79..2a1b4ff7818 100644
--- a/tests/ui/issues/issue-48728.stderr
+++ b/tests/ui/issues/issue-48728.current.stderr
@@ -1,5 +1,5 @@
 error[E0119]: conflicting implementations of trait `Clone` for type `Node<[_]>`
-  --> $DIR/issue-48728.rs:4:10
+  --> $DIR/issue-48728.rs:9:10
    |
 LL | #[derive(Clone)]
    |          ^^^^^ conflicting implementation for `Node<[_]>`
diff --git a/tests/ui/issues/issue-48728.rs b/tests/ui/issues/issue-48728.rs
index cbdc10bd2e1..7ef05f4277b 100644
--- a/tests/ui/issues/issue-48728.rs
+++ b/tests/ui/issues/issue-48728.rs
@@ -1,7 +1,12 @@
 // Regression test for #48728, an ICE that occurred computing
 // coherence "help" information.
 
-#[derive(Clone)] //~ ERROR conflicting implementations of trait `Clone`
+//@ revisions: current next
+//@ ignore-compare-mode-next-solver (explicit revisions)
+//@[next] compile-flags: -Znext-solver
+//@[next] check-pass
+
+#[derive(Clone)] //[current]~ ERROR conflicting implementations of trait `Clone`
 struct Node<T: ?Sized>(Box<T>);
 
 impl<T: Clone + ?Sized> Clone for Node<[T]> {