Auto merge of #107451 - matthiaskrgr:rollup-m4ucfu8, r=matthiaskrgr

Rollup of 11 pull requests

Successful merges:

 - #96763 (Fix maintainer validation message)
 - #106540 (Insert whitespace to avoid ident concatenation in suggestion)
 - #106763 (print why a test was ignored if its the only test specified)
 - #106769 (libtest: Print why a test was ignored if it's the only test specified.)
 - #106798 (Implement `signum` with `Ord`)
 - #107006 (Output tree representation on thir-tree)
 - #107078 (Update wording of invalid_doc_attributes docs.)
 - #107169 (Pass `--locked` to the x test tidy call)
 - #107431 (docs: remove colon from time header)
 - #107432 (rustdoc: remove unused class `has-srclink`)
 - #107448 (When stamp doesn't exist, should say Error, and print path to stamp file)

Failed merges:

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

Author: bors

compiler/rustc_driver/src/pretty.rs

@@ -498,6 +498,21 @@ fn print_with_analysis(tcx: TyCtxt<'_>, ppm: PpMode) -> Result<(), ErrorGuarante
             out
         }
 
+        ThirFlat => {
+            let mut out = String::new();
+            abort_on_err(rustc_hir_analysis::check_crate(tcx), tcx.sess);
+            debug!("pretty printing THIR flat");
+            for did in tcx.hir().body_owners() {
+                let _ = writeln!(
+                    out,
+                    "{:?}:\n{}\n",
+                    did,
+                    tcx.thir_flat(ty::WithOptConstParam::unknown(did))
+                );
+            }
+            out
+        }
+
         _ => unreachable!(),
     };
 

compiler/rustc_lint_defs/src/builtin.rs

@@ -3531,9 +3531,15 @@ declare_lint! {
     ///
     /// ### Explanation
     ///
-    /// Previously, there were very like checks being performed on `#[doc(..)]`
-    /// unlike the other attributes. It'll now catch all the issues that it
-    /// silently ignored previously.
+    /// Previously, incorrect usage of the `#[doc(..)]` attribute was not
+    /// being validated. Usually these should be rejected as a hard error,
+    /// but this lint was introduced to avoid breaking any existing
+    /// crates which included them.
+    ///
+    /// This is a [future-incompatible] lint to transition this to a hard
+    /// error in the future. See [issue #82730] for more details.
+    ///
+    /// [issue #82730]: https://github.com/rust-lang/rust/issues/82730
     pub INVALID_DOC_ATTRIBUTES,
     Warn,
     "detects invalid `#[doc(...)]` attributes",

compiler/rustc_middle/src/query/mod.rs

@@ -361,6 +361,13 @@ rustc_queries! {
         desc { |tcx| "constructing THIR tree for `{}`", tcx.def_path_str(key.did.to_def_id()) }
     }
 
+    /// Create a list-like THIR representation for debugging.
+    query thir_flat(key: ty::WithOptConstParam<LocalDefId>) -> String {
+        no_hash
+        arena_cache
+        desc { |tcx| "constructing flat THIR representation for `{}`", tcx.def_path_str(key.did.to_def_id()) }
+    }
+
     /// Set of all the `DefId`s in this crate that have MIR associated with
     /// them. This includes all the body owners, but also things like struct
     /// constructors.

compiler/rustc_middle/src/thir.rs

@@ -29,6 +29,7 @@ use rustc_target::asm::InlineAsmRegOrRegClass;
 use std::fmt;
 use std::ops::Index;
 
+pub mod print;
 pub mod visit;
 
 macro_rules! thir_with_elements {