[COMMITTED 197/220] gccrs: Fix ICE during hir dump of deferred anon constant

[arthur . cohen]

From: Philip Herron <herron.phi...@googlemail.com>

gcc/rust/ChangeLog:

        * hir/rust-hir-dump.cc (Dump::visit): check for expression
        * hir/tree/rust-hir.cc (AnonConst::as_string): likewise

Signed-off-by: Philip Herron <herron.phi...@googlemail.com>
---
 gcc/rust/hir/rust-hir-dump.cc | 5 ++++-
 gcc/rust/hir/tree/rust-hir.cc | 5 ++++-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/gcc/rust/hir/rust-hir-dump.cc b/gcc/rust/hir/rust-hir-dump.cc
index afee7b42f47..0a2fc818517 100644
--- a/gcc/rust/hir/rust-hir-dump.cc
+++ b/gcc/rust/hir/rust-hir-dump.cc
@@ -1302,7 +1302,10 @@ Dump::visit (AnonConst &e)
   begin ("AnonConst");
   do_expr (e);
 
-  visit_field ("inner", e.get_inner_expr ());
+  if (e.is_deferred ())
+    put_field ("inner", "_");
+  else
+    visit_field ("inner", e.get_inner_expr ());
 
   end ("AnonConst");
 }
diff --git a/gcc/rust/hir/tree/rust-hir.cc b/gcc/rust/hir/tree/rust-hir.cc
index dc94fb5b1eb..a802e8cd055 100644
--- a/gcc/rust/hir/tree/rust-hir.cc
+++ b/gcc/rust/hir/tree/rust-hir.cc
@@ -1055,7 +1055,10 @@ AnonConst::as_string () const
   std::string istr = indent_spaces (enter);
   std::string str = istr + "AnonConst:\n" + istr;
 
-  str += get_inner_expr ().as_string ();
+  if (expr.has_value ())
+    str += get_inner_expr ().as_string ();
+  else
+    str += "_";
 
   str += "\n" + indent_spaces (out);
 
-- 
2.49.0