Rollup merge of #81235 - reese:rw-tuple-diagnostics, r=estebank

Improve suggestion for tuple struct pattern matching errors.

Closes #80174

This change allows numbers to be parsed as field names when pattern matching on structs, which allows us to provide better error messages when tuple structs are matched using a struct pattern.

r? ``@estebank``

2 files changed, 2 insertions, 2 deletions

diff --git a/compiler/rustc_parse/src/parser/mod.rs b/compiler/rustc_parse/src/parser/mod.rs
index 1292286bc18..8a097bf481d 100644
--- a/compiler/rustc_parse/src/parser/mod.rs
+++ b/compiler/rustc_parse/src/parser/mod.rs
@@ -950,7 +950,7 @@ impl<'a> Parser<'a> {
             self.bump();
             Ok(Ident::new(symbol, self.prev_token.span))
         } else {
-            self.parse_ident_common(false)
+            self.parse_ident_common(true)
         }
     }
 
diff --git a/compiler/rustc_parse/src/parser/pat.rs b/compiler/rustc_parse/src/parser/pat.rs
index 8874548da78..9e2e7359ca9 100644
--- a/compiler/rustc_parse/src/parser/pat.rs
+++ b/compiler/rustc_parse/src/parser/pat.rs
@@ -1028,7 +1028,7 @@ impl<'a> Parser<'a> {
             let boxed_span = self.token.span;
             let is_ref = self.eat_keyword(kw::Ref);
             let is_mut = self.eat_keyword(kw::Mut);
-            let fieldname = self.parse_ident()?;
+            let fieldname = self.parse_field_name()?;
             hi = self.prev_token.span;
 
             let bind_type = match (is_ref, is_mut) {