Auto merge of #120991 - matthiaskrgr:rollup-f8kw2st, r=matthiaskrgr

Rollup of 8 pull requests

Successful merges:

 - #118983 (Warn on references casting to bigger memory layout)
 - #119451 (Gate PR CI on clippy correctness lints)
 - #120273 (compiletest: few naive improvements)
 - #120950 (Fix async closures in CTFE)
 - #120958 (Dejargonize `subst`)
 - #120965 (Add lahfsahf and prfchw target feature)
 - #120970 (add another test for promoteds-in-static)
 - #120979 (Update books)

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

Author: bors

clippy_lints/src/redundant_locals.rs

@@ -101,7 +101,7 @@ impl<'tcx> LateLintPass<'tcx> for RedundantLocals {
 fn is_by_value_closure_capture(cx: &LateContext<'_>, redefinition: HirId, root_variable: HirId) -> bool {
     let closure_def_id = cx.tcx.hir().enclosing_body_owner(redefinition);
 
-    cx.tcx.is_closure_or_coroutine(closure_def_id.to_def_id())
+    cx.tcx.is_closure_like(closure_def_id.to_def_id())
         && cx.tcx.closure_captures(closure_def_id).iter().any(|c| {
             matches!(c.info.capture_kind, UpvarCapture::ByValue)
                 && matches!(c.place.base, PlaceBase::Upvar(upvar) if upvar.var_path.hir_id == root_variable)

tests/ui/transmute_ptr_to_ptr.fixed

@@ -35,16 +35,16 @@ fn transmute_ptr_to_ptr() {
         // ref-ref transmutes; bad
         let _: &f32 = &*(&1u32 as *const u32 as *const f32);
         //~^ ERROR: transmute from a reference to a reference
-        let _: &f64 = &*(&1f32 as *const f32 as *const f64);
+        let _: &f32 = &*(&1f64 as *const f64 as *const f32);
         //~^ ERROR: transmute from a reference to a reference
         //:^ this test is here because both f32 and f64 are the same TypeVariant, but they are not
         // the same type
         let _: &mut f32 = &mut *(&mut 1u32 as *mut u32 as *mut f32);
         //~^ ERROR: transmute from a reference to a reference
         let _: &GenericParam<f32> = &*(&GenericParam { t: 1u32 } as *const GenericParam<u32> as *const GenericParam<f32>);
         //~^ ERROR: transmute from a reference to a reference
-        let u8_ref: &u8 = &0u8;
-        let u64_ref: &u64 = unsafe { &*(u8_ref as *const u8 as *const u64) };
+        let u64_ref: &u64 = &0u64;
+        let u8_ref: &u8 = unsafe { &*(u64_ref as *const u64 as *const u8) };
         //~^ ERROR: transmute from a reference to a reference
     }
 

tests/ui/transmute_ptr_to_ptr.rs

@@ -35,16 +35,16 @@ fn transmute_ptr_to_ptr() {
         // ref-ref transmutes; bad
         let _: &f32 = std::mem::transmute(&1u32);
         //~^ ERROR: transmute from a reference to a reference
-        let _: &f64 = std::mem::transmute(&1f32);
+        let _: &f32 = std::mem::transmute(&1f64);
         //~^ ERROR: transmute from a reference to a reference
         //:^ this test is here because both f32 and f64 are the same TypeVariant, but they are not
         // the same type
         let _: &mut f32 = std::mem::transmute(&mut 1u32);
         //~^ ERROR: transmute from a reference to a reference
         let _: &GenericParam<f32> = std::mem::transmute(&GenericParam { t: 1u32 });
         //~^ ERROR: transmute from a reference to a reference
-        let u8_ref: &u8 = &0u8;
-        let u64_ref: &u64 = unsafe { std::mem::transmute(u8_ref) };
+        let u64_ref: &u64 = &0u64;
+        let u8_ref: &u8 = unsafe { std::mem::transmute(u64_ref) };
         //~^ ERROR: transmute from a reference to a reference
     }
 

tests/ui/transmute_ptr_to_ptr.stderr

@@ -22,8 +22,8 @@ LL |         let _: &f32 = std::mem::transmute(&1u32);
 error: transmute from a reference to a reference
   --> $DIR/transmute_ptr_to_ptr.rs:38:23
    |
-LL |         let _: &f64 = std::mem::transmute(&1f32);
-   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(&1f32 as *const f32 as *const f64)`
+LL |         let _: &f32 = std::mem::transmute(&1f64);
+   |                       ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(&1f64 as *const f64 as *const f32)`
 
 error: transmute from a reference to a reference
   --> $DIR/transmute_ptr_to_ptr.rs:42:27
@@ -38,10 +38,10 @@ LL |         let _: &GenericParam<f32> = std::mem::transmute(&GenericParam { t:
    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(&GenericParam { t: 1u32 } as *const GenericParam<u32> as *const GenericParam<f32>)`
 
 error: transmute from a reference to a reference
-  --> $DIR/transmute_ptr_to_ptr.rs:47:38
+  --> $DIR/transmute_ptr_to_ptr.rs:47:36
    |
-LL |         let u64_ref: &u64 = unsafe { std::mem::transmute(u8_ref) };
-   |                                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(u8_ref as *const u8 as *const u64)`
+LL |         let u8_ref: &u8 = unsafe { std::mem::transmute(u64_ref) };
+   |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `&*(u64_ref as *const u64 as *const u8)`
 
 error: aborting due to 7 previous errors