Catch tokens different from IDENTIFIER

gcc/rust/ChangeLog:

	* parse/rust-parse-impl.h: (parse_bare_function_type) broadens check

gcc/testsuite/ChangeLog:

	* rust/compile/invalid_impl_for.rs: broadens regex

Signed-off-by: Lúcio Boari Fleury <lucboari@gmail.com>

Author: lucbf

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

@@ -9671,7 +9671,7 @@ Parser<ManagedTokenSource>::parse_bare_function_type (
     return nullptr;
 
   auto t = lexer.peek_token ();
-  if (t->get_id () == IDENTIFIER)
+  if (t->get_id () != LEFT_PAREN)
     {
       Error error (t->get_locus (),
 		   "unexpected token %qs - expected bare function",

gcc/testsuite/rust/compile/invalid_impl_for.rs

@@ -1,4 +1,4 @@
 impl Foo for
-fn main() {// { dg-error "unexpected token .identifier. - expected bare function" }
+fn main() {// { dg-error "unexpected token ..*. - expected bare function" }
 // { dg-error "could not parse type in trait impl" "" { target *-*-* } .-1 }
 }