From 980eac10e4f7948f00c4d9c8f028d9f2f1ce38b5 Mon Sep 17 00:00:00 2001
From: John Hodge <tpg@ucc.asn.au>
Date: Fri, 23 Aug 2019 07:39:43 +0800
Subject: Expand proc_macro - Fix assertion with no-value enum variants

---
 src/ast/expr_ptr.hpp | 1 +
 1 file changed, 1 insertion(+)

(limited to 'src/ast/expr_ptr.hpp')

diff --git a/src/ast/expr_ptr.hpp b/src/ast/expr_ptr.hpp
index cae519cc..022c548a 100644
--- a/src/ast/expr_ptr.hpp
+++ b/src/ast/expr_ptr.hpp
@@ -23,6 +23,7 @@ public:
     Expr(ExprNode* node);
     Expr();
 
+    operator bool() const { return is_valid(); }
     bool is_valid() const { return m_node.get() != nullptr; }
     const ExprNode& node() const { assert(m_node.get()); return *m_node; }
           ExprNode& node()       { assert(m_node.get()); return *m_node; }
-- 
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