From bb351c7a73c38e96fbc83032e23977e2926fa43e Mon Sep 17 00:00:00 2001
From: Philip Herron <philip.herron@embecosm.com>
Date: Mon, 26 Jul 2021 15:16:09 +0100
Subject: Fix crash when extern function item has no return type

Return types are optional in rust and extern fn items can be a ZST for the
result.

Addresses #421
Fixes #595
---
 gcc/rust/ast/rust-ast-full-test.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'gcc')

diff --git a/gcc/rust/ast/rust-ast-full-test.cc b/gcc/rust/ast/rust-ast-full-test.cc
index dd55e1d..5d32139 100644
--- a/gcc/rust/ast/rust-ast-full-test.cc
+++ b/gcc/rust/ast/rust-ast-full-test.cc
@@ -3595,7 +3595,8 @@ ExternalFunctionItem::as_string () const
     }
 
   // add type on new line
-  str += "\n (return) Type: " + return_type->as_string ();
+  str += "\n (return) Type: "
+	 + (has_return_type () ? return_type->as_string () : "()");
 
   // where clause
   str += "\n Where clause: ";
-- 
cgit v1.1