gccrs: Fix ICE for ast dump of deferred anon const

gcc/rust/ChangeLog:

	* ast/rust-ast-collector.cc (TokenCollector::visit): check for value

Signed-off-by: Philip Herron <herron.philip@googlemail.com>

diff --git a/gcc/rust/ast/rust-ast-collector.cc b/gcc/rust/ast/rust-ast-collector.cc
index f4033ad4aaefb090ae9e0678761b6b8b9859bb67..b27a3af11e80ad493970dda55e89799d51ba33b1 100644 (file)
--- a/gcc/rust/ast/rust-ast-collector.cc
+++ b/gcc/rust/ast/rust-ast-collector.cc
@@ -1274,7 +1274,13 @@ TokenCollector::visit (BlockExpr &expr)
 void
 TokenCollector::visit (AnonConst &expr)
 {
-  visit (expr.get_inner_expr ());
+  if (!expr.is_deferred ())
+    {
+      visit (expr.get_inner_expr ());
+      return;
+    }
+
+  push (Rust::Token::make_string (expr.get_locus (), "_"));
 }
 
 void