Auto merge of #106054 - matthiaskrgr:rollup-38epsfh, r=matthiaskrgr

Rollup of 6 pull requests

Successful merges:

 - #105567 (KCFI test: Also support LLVM 16 output)
 - #105847 (Ensure param-env is const before calling `eval_to_valtree`)
 - #105983 (Add a missing early return in drop tracking `handle_uninhabited_return`)
 - #106027 (rustdoc: simplify CSS and DOM for more-scraped-examples)
 - #106035 (Migrate search tab title color to CSS variable)
 - #106037 (Add regression test for #94293)

Failed merges:

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

8 files changed, 194 insertions, 11 deletions

diff --git a/src/test/codegen/sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi.rs b/src/test/codegen/sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi.rs
index 0afd9727517..8e0d02550ee 100644
--- a/src/test/codegen/sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi.rs
+++ b/src/test/codegen/sanitizer-kcfi-emit-kcfi-operand-bundle-itanium-cxx-abi.rs
@@ -20,24 +20,21 @@ impl Copy for i32 {}
 
 pub fn foo(f: fn(i32) -> i32, arg: i32) -> i32 {
     // CHECK-LABEL: define{{.*}}foo
-    // FIXME(rcvalle): Change <unknown kind #36> to !kcfi_type when Rust is updated to LLVM 16
-    // CHECK-SAME: {{.*}}!<unknown kind #36> ![[TYPE1:[0-9]+]]
+    // CHECK-SAME: {{.*}}!{{<unknown kind #36>|kcfi_type}} ![[TYPE1:[0-9]+]]
     // CHECK: call i32 %f(i32 %arg){{.*}}[ "kcfi"(i32 -1666898348) ]
     f(arg)
 }
 
 pub fn bar(f: fn(i32, i32) -> i32, arg1: i32, arg2: i32) -> i32 {
     // CHECK-LABEL: define{{.*}}bar
-    // FIXME(rcvalle): Change <unknown kind #36> to !kcfi_type when Rust is updated to LLVM 16
-    // CHECK-SAME: {{.*}}!<unknown kind #36> ![[TYPE2:[0-9]+]]
+    // CHECK-SAME: {{.*}}!{{<unknown kind #36>|kcfi_type}} ![[TYPE2:[0-9]+]]
     // CHECK: call i32 %f(i32 %arg1, i32 %arg2){{.*}}[ "kcfi"(i32 -1789026986) ]
     f(arg1, arg2)
 }
 
 pub fn baz(f: fn(i32, i32, i32) -> i32, arg1: i32, arg2: i32, arg3: i32) -> i32 {
     // CHECK-LABEL: define{{.*}}baz
-    // FIXME(rcvalle): Change <unknown kind #36> to !kcfi_type when Rust is updated to LLVM 16
-    // CHECK-SAME: {{.*}}!<unknown kind #36> ![[TYPE3:[0-9]+]]
+    // CHECK-SAME: {{.*}}!{{<unknown kind #36>|kcfi_type}} ![[TYPE3:[0-9]+]]
     // CHECK: call i32 %f(i32 %arg1, i32 %arg2, i32 %arg3){{.*}}[ "kcfi"(i32 1248878270) ]
     f(arg1, arg2, arg3)
 }
diff --git a/src/test/rustdoc-gui/scrape-examples-layout.goml b/src/test/rustdoc-gui/scrape-examples-layout.goml
index 988c911b783..fde9a0ab0bc 100644
--- a/src/test/rustdoc-gui/scrape-examples-layout.goml
+++ b/src/test/rustdoc-gui/scrape-examples-layout.goml
@@ -10,26 +10,26 @@ assert-property-false: (
 // Check that examples with very long lines have the same width as ones that don't.
 store-property: (
     clientWidth,
-    ".more-scraped-examples .scraped-example:nth-child(1) .code-wrapper .src-line-numbers",
+    ".more-scraped-examples .scraped-example:nth-child(2) .code-wrapper .src-line-numbers",
     "clientWidth"
 )
 
 assert-property: (
-    ".more-scraped-examples .scraped-example:nth-child(2) .code-wrapper .src-line-numbers",
+    ".more-scraped-examples .scraped-example:nth-child(3) .code-wrapper .src-line-numbers",
     {"clientWidth": |clientWidth|}
 )
 
 assert-property: (
-    ".more-scraped-examples .scraped-example:nth-child(3) .code-wrapper .src-line-numbers",
+    ".more-scraped-examples .scraped-example:nth-child(4) .code-wrapper .src-line-numbers",
     {"clientWidth": |clientWidth|}
 )
 
 assert-property: (
-    ".more-scraped-examples .scraped-example:nth-child(4) .code-wrapper .src-line-numbers",
+    ".more-scraped-examples .scraped-example:nth-child(5) .code-wrapper .src-line-numbers",
     {"clientWidth": |clientWidth|}
 )
 
 assert-property: (
-    ".more-scraped-examples .scraped-example:nth-child(5) .code-wrapper .src-line-numbers",
+    ".more-scraped-examples .scraped-example:nth-child(6) .code-wrapper .src-line-numbers",
     {"clientWidth": |clientWidth|}
 )
diff --git a/src/test/rustdoc-gui/search-result-color.goml b/src/test/rustdoc-gui/search-result-color.goml
index dde43b1c980..d124045608c 100644
--- a/src/test/rustdoc-gui/search-result-color.goml
+++ b/src/test/rustdoc-gui/search-result-color.goml
@@ -67,6 +67,11 @@ reload:
 // Waiting for the search results to appear...
 wait-for: "#titles"
 assert-css: (
+    "#titles > button > div.count",
+    {"color": "rgb(136, 136, 136)"},
+    ALL,
+)
+assert-css: (
     "//*[@class='desc'][text()='Just a normal struct.']",
     {"color": "rgb(197, 197, 197)"},
 )
@@ -179,6 +184,11 @@ reload:
 // Waiting for the search results to appear...
 wait-for: "#titles"
 assert-css: (
+    "#titles > button > div.count",
+    {"color": "rgb(136, 136, 136)"},
+    ALL,
+)
+assert-css: (
     "//*[@class='desc'][text()='Just a normal struct.']",
     {"color": "rgb(221, 221, 221)"},
 )
@@ -276,6 +286,11 @@ reload:
 // Waiting for the search results to appear...
 wait-for: "#titles"
 assert-css: (
+    "#titles > button > div.count",
+    {"color": "rgb(136, 136, 136)"},
+    ALL,
+)
+assert-css: (
     "//*[@class='desc'][text()='Just a normal struct.']",
     {"color": "rgb(0, 0, 0)"},
 )
diff --git a/src/test/ui/const-generics/generic_const_exprs/issue-94293.rs b/src/test/ui/const-generics/generic_const_exprs/issue-94293.rs
new file mode 100644
index 00000000000..713c5d89a93
--- /dev/null
+++ b/src/test/ui/const-generics/generic_const_exprs/issue-94293.rs
@@ -0,0 +1,31 @@
+// check-pass
+
+#![feature(generic_const_exprs)]
+#![allow(incomplete_features)]
+#![deny(const_evaluatable_unchecked)]
+
+pub struct If<const CONDITION: bool>;
+pub trait True {}
+impl True for If<true> {}
+
+pub struct FixedI8<const FRAC: u32> {
+    pub bits: i8,
+}
+
+impl<const FRAC_LHS: u32, const FRAC_RHS: u32> PartialEq<FixedI8<FRAC_RHS>> for FixedI8<FRAC_LHS>
+where
+    If<{ FRAC_RHS <= 8 }>: True,
+{
+    fn eq(&self, _rhs: &FixedI8<FRAC_RHS>) -> bool {
+        unimplemented!()
+    }
+}
+
+impl<const FRAC: u32> PartialEq<i8> for FixedI8<FRAC> {
+    fn eq(&self, rhs: &i8) -> bool {
+        let rhs_as_fixed = FixedI8::<0> { bits: *rhs };
+        PartialEq::eq(self, &rhs_as_fixed)
+    }
+}
+
+fn main() {}
diff --git a/src/test/ui/consts/issue-104396.rs b/src/test/ui/consts/issue-104396.rs
new file mode 100644
index 00000000000..315b0cf0fd6
--- /dev/null
+++ b/src/test/ui/consts/issue-104396.rs
@@ -0,0 +1,36 @@
+// compile-flags: -Zmir-opt-level=3
+// check-pass
+
+#![feature(generic_const_exprs)]
+//~^ WARN the feature `generic_const_exprs` is incomplete
+
+#[inline(always)]
+fn from_fn_1<const N: usize, F: FnMut(usize) -> f32>(mut f: F) -> [f32; N] {
+    let mut result = [0.0; N];
+    let mut i = 0;
+    while i < N {
+        result[i] = f(i);
+        i += 1;
+    }
+    result
+}
+
+pub struct TestArray<const N: usize>
+where
+    [(); N / 2]:,
+{
+    array: [f32; N / 2],
+}
+
+impl<const N: usize> TestArray<N>
+where
+    [(); N / 2]:,
+{
+    fn from_fn_2<F: FnMut(usize) -> f32>(f: F) -> Self {
+        Self { array: from_fn_1(f) }
+    }
+}
+
+fn main() {
+    TestArray::<4>::from_fn_2(|i| 0.0);
+}
diff --git a/src/test/ui/consts/issue-104396.stderr b/src/test/ui/consts/issue-104396.stderr
new file mode 100644
index 00000000000..5856bee09a3
--- /dev/null
+++ b/src/test/ui/consts/issue-104396.stderr
@@ -0,0 +1,11 @@
+warning: the feature `generic_const_exprs` is incomplete and may not be safe to use and/or cause compiler crashes
+  --> $DIR/issue-104396.rs:4:12
+   |
+LL | #![feature(generic_const_exprs)]
+   |            ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: see issue #76560 <https://github.com/rust-lang/rust/issues/76560> for more information
+   = note: `#[warn(incomplete_features)]` on by default
+
+warning: 1 warning emitted
+
diff --git a/src/test/ui/generator/unresolved-ct-var-drop-tracking.rs b/src/test/ui/generator/unresolved-ct-var-drop-tracking.rs
new file mode 100644
index 00000000000..a6589348d30
--- /dev/null
+++ b/src/test/ui/generator/unresolved-ct-var-drop-tracking.rs
@@ -0,0 +1,15 @@
+// incremental
+// edition:2021
+// compile-flags: -Zdrop-tracking
+
+fn main() {
+    let _ = async {
+        let s = std::array::from_fn(|_| ()).await;
+        //~^ ERROR `[(); _]` is not a future
+        //~| ERROR type inside `async` block must be known in this context
+        //~| ERROR type inside `async` block must be known in this context
+        //~| ERROR type inside `async` block must be known in this context
+        //~| ERROR type inside `async` block must be known in this context
+        //~| ERROR type inside `async` block must be known in this context
+    };
+}
diff --git a/src/test/ui/generator/unresolved-ct-var-drop-tracking.stderr b/src/test/ui/generator/unresolved-ct-var-drop-tracking.stderr
new file mode 100644
index 00000000000..9e1fed54c54
--- /dev/null
+++ b/src/test/ui/generator/unresolved-ct-var-drop-tracking.stderr
@@ -0,0 +1,78 @@
+error[E0277]: `[(); _]` is not a future
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:44
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                 ---------------------------^^^^^^
+   |                 |                          |
+   |                 |                          `[(); _]` is not a future
+   |                 |                          help: remove the `.await`
+   |                 this call returns `[(); _]`
+   |
+   = help: the trait `Future` is not implemented for `[(); _]`
+   = note: [(); _] must be a future or must implement `IntoFuture` to be awaited
+   = note: required for `[(); _]` to implement `IntoFuture`
+
+error[E0698]: type inside `async` block must be known in this context
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:17
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                 ^^^^^^^^^^^^^^^^^^^ cannot infer the value of const parameter `N` declared on the function `from_fn`
+   |
+note: the type is part of the `async` block because of this `await`
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:44
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                                            ^^^^^^
+
+error[E0698]: type inside `async` block must be known in this context
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:17
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                 ^^^^^^^^^^^^^^^^^^^ cannot infer the value of const parameter `N` declared on the function `from_fn`
+   |
+note: the type is part of the `async` block because of this `await`
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:44
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                                            ^^^^^^
+
+error[E0698]: type inside `async` block must be known in this context
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:17
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                 ^^^^^^^^^^^^^^^^^^^ cannot infer the value of const parameter `N` declared on the function `from_fn`
+   |
+note: the type is part of the `async` block because of this `await`
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:44
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                                            ^^^^^^
+
+error[E0698]: type inside `async` block must be known in this context
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:17
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                 ^^^^^^^^^^^^^^^^^^^ cannot infer the value of const parameter `N` declared on the function `from_fn`
+   |
+note: the type is part of the `async` block because of this `await`
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:44
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                                            ^^^^^^
+
+error[E0698]: type inside `async` block must be known in this context
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:17
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                 ^^^^^^^^^^^^^^^^^^^ cannot infer the value of const parameter `N` declared on the function `from_fn`
+   |
+note: the type is part of the `async` block because of this `await`
+  --> $DIR/unresolved-ct-var-drop-tracking.rs:7:44
+   |
+LL |         let s = std::array::from_fn(|_| ()).await;
+   |                                            ^^^^^^
+
+error: aborting due to 6 previous errors
+
+Some errors have detailed explanations: E0277, E0698.
+For more information about an error, try `rustc --explain E0277`.