Auto merge of #100456 - Dylan-DPC:rollup-fn17z9f, r=Dylan-DPC

Rollup of 9 pull requests

Successful merges:

 - #100022 (Optimize thread ID generation)
 - #100030 (cleanup code w/ pointers in std a little)
 - #100229 (add -Zextra-const-ub-checks to enable more UB checking in const-eval)
 - #100247 (Generalize trait object generic param check to aliases.)
 - #100255 (Adding more verbose documentation for `std::fmt::Write`)
 - #100366 (errors: don't fail on broken primary translations)
 - #100396 (Suggest const and static for global variable)
 - #100409 (rustdoc: don't generate DOM element for operator)
 - #100443 (Add two let else regression tests)

Failed merges:

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

1 files changed, 6 insertions, 1 deletions

diff --git a/compiler/rustc_parse/src/parser/item.rs b/compiler/rustc_parse/src/parser/item.rs
index 72c23776d33..197c0384898 100644
--- a/compiler/rustc_parse/src/parser/item.rs
+++ b/compiler/rustc_parse/src/parser/item.rs
@@ -68,7 +68,12 @@ impl<'a> Parser<'a> {
             if !self.maybe_consume_incorrect_semicolon(&items) {
                 let msg = &format!("expected item, found {token_str}");
                 let mut err = self.struct_span_err(self.token.span, msg);
-                err.span_label(self.token.span, "expected item");
+                let label = if self.is_kw_followed_by_ident(kw::Let) {
+                    "consider using `const` or `static` instead of `let` for global variables"
+                } else {
+                    "expected item"
+                };
+                err.span_label(self.token.span, label);
                 return Err(err);
             }
         }