Auto merge of #95835 - Dylan-DPC:rollup-l5mf2ad, r=Dylan-DPC

Rollup of 8 pull requests

Successful merges:

 - #90066 (Add new ThinBox type for 1 stack pointer wide heap allocated trait objects)
 - #95374 (assert_uninit_valid: ensure we detect at least arrays of uninhabited types)
 - #95599 (Strict provenance lints)
 - #95751 (Don't report numeric inference ambiguity when we have previous errors)
 - #95764 ([macro_metavar_expr] Add tests to ensure the feature requirement)
 - #95787 (reword panic vs result section to remove recoverable vs unrecoverable framing)
 - #95797 (Remove explicit delimiter token trees from `Delimited`.)
 - #95804 (rustdoc: Fix empty doc comment with backline ICE)

Failed merges:

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

1 files changed, 19 insertions, 3 deletions

diff --git a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
index 9998c5bb087..ac98dd5801e 100644
--- a/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
+++ b/compiler/rustc_trait_selection/src/traits/error_reporting/mod.rs
@@ -36,6 +36,7 @@ use rustc_span::symbol::{kw, sym};
 use rustc_span::{ExpnKind, Span, DUMMY_SP};
 use std::fmt;
 use std::iter;
+use std::ops::ControlFlow;
 
 use crate::traits::query::evaluate_obligation::InferCtxtExt as _;
 use crate::traits::query::normalize::AtExt as _;
@@ -2226,9 +2227,10 @@ impl<'a, 'tcx> InferCtxtPrivExt<'a, 'tcx> for InferCtxt<'a, 'tcx> {
         post.dedup();
 
         if self.is_tainted_by_errors()
-            && crate_names.len() == 1
-            && ["`core`", "`alloc`", "`std`"].contains(&crate_names[0].as_str())
-            && spans.len() == 0
+            && (crate_names.len() == 1
+                && spans.len() == 0
+                && ["`core`", "`alloc`", "`std`"].contains(&crate_names[0].as_str())
+                || predicate.visit_with(&mut HasNumericInferVisitor).is_break())
         {
             // Avoid complaining about other inference issues for expressions like
             // `42 >> 1`, where the types are still `{integer}`, but we want to
@@ -2666,3 +2668,17 @@ impl ArgKind {
         }
     }
 }
+
+struct HasNumericInferVisitor;
+
+impl<'tcx> ty::TypeVisitor<'tcx> for HasNumericInferVisitor {
+    type BreakTy = ();
+
+    fn visit_ty(&mut self, ty: Ty<'tcx>) -> ControlFlow<Self::BreakTy> {
+        if matches!(ty.kind(), ty::Infer(ty::FloatVar(_) | ty::IntVar(_))) {
+            ControlFlow::Break(())
+        } else {
+            ControlFlow::CONTINUE
+        }
+    }
+}