gccrs: Invalid order of generic parameters

Added more userfriendly message.

gcc/rust/ChangeLog:

	* parse/rust-parse-impl.h (Parser::parse_generic_params):
	Added more user friendly message.

gcc/testsuite/ChangeLog:

	* rust/compile/generics13.rs:
	for dejagnu,

Signed-off-by: Muhammad Mahad <[email protected]>

Author: MahadMuhammad

gcc/rust/parse/rust-parse-impl.h

@@ -3142,9 +3142,12 @@ Parser<ManagedTokenSource>::parse_generic_params (EndTokenPred is_end_token)
 
   // FIXME: Add reordering hint
   if (order_error)
-    rust_error_at (generic_params.front ()->get_locus (),
-		   "invalid order for generic parameters: lifetimes should "
-		   "always come before types");
+    {
+      Error error (generic_params.front ()->get_locus (),
+		   "invalid order for generic parameters: lifetime parameters "
+		   "must be declared prior to type and const parameters");
+      add_error (std::move (error));
+    }
 
   generic_params.shrink_to_fit ();
   return generic_params;

gcc/testsuite/rust/compile/generics13.rs

@@ -1 +1 @@
-struct Foo<A, 'a>; // { dg-error "invalid order for generic parameters: lifetimes should always come before types" }
+struct Foo<A, 'a>; // { dg-error "invalid order for generic parameters: lifetime parameters must be declared prior to type and const parameters" }