Auto merge of #58691 - Centril:rollup, r=Centril

Rollup of 6 pull requests

Successful merges:

 - #57364 (Improve parsing diagnostic for negative supertrait bounds)
 - #58183 (Clarify guarantees for `Box` allocation)
 - #58442 (Simplify the unix `Weak` functionality)
 - #58454 (Refactor Windows stdio and remove stdin double buffering )
 - #58511 (Const to op simplification)
 - #58642 (rustdoc: support methods on primitives in intra-doc links)

Failed merges:

r? @ghost

src/librustc_codegen_llvm/consts.rs

@@ -71,7 +71,7 @@ pub fn codegen_static_initializer(
     let static_ = cx.tcx.const_eval(param_env.and(cid))?;
 
     let alloc = match static_.val {
-        ConstValue::ByRef(_, alloc, n) if n.bytes() == 0 => alloc,
+        ConstValue::ByRef(ptr, alloc) if ptr.offset.bytes() == 0 => alloc,
         _ => bug!("static const eval returned {:#?}", static_),
     };
     Ok((const_alloc_to_llvm(cx, alloc), alloc))