Auto merge of #79697 - rylev:clearer-const-diagnostic, r=oli-obk

A slightly clearer diagnostic when misusing const

Fixes #79598

This produces the following diagnostic:
"expected one of `>`, a const expression, lifetime, or type, found keyword `const`"

Instead of the previous, more confusing:
"expected one of `>`, const, lifetime, or type, found keyword `const`"

This might not be completely clear as some users might not understand what a const expression is, but I do believe this is an improvement.

1 files changed, 1 insertions, 1 deletions

diff --git a/compiler/rustc_parse/src/parser/mod.rs b/compiler/rustc_parse/src/parser/mod.rs
index b746256f5fe..22f308ff36d 100644
--- a/compiler/rustc_parse/src/parser/mod.rs
+++ b/compiler/rustc_parse/src/parser/mod.rs
@@ -264,7 +264,7 @@ impl TokenType {
             TokenType::Ident => "identifier".to_string(),
             TokenType::Path => "path".to_string(),
             TokenType::Type => "type".to_string(),
-            TokenType::Const => "const".to_string(),
+            TokenType::Const => "a const expression".to_string(),
         }
     }
 }