From: Mikko Rasa <tdb@tdb.fi>
Date: Thu, 12 Sep 2019 19:34:15 +0000 (+0300)
Subject: Appease the compiler with some extra copy-ctor's and operator='s
X-Git-Url: http://git.tdb.fi/?a=commitdiff_plain;h=caad9bd997e95b3ccdf496313588b8480ebfddfa;p=libs%2Fgl.git

Appease the compiler with some extra copy-ctor's and operator='s

In C++11 if you manually define either a copy constructor or an
assignment operator, you must define the other as well.
---

diff --git a/source/programsyntax.h b/source/programsyntax.h
index 59042951..e7b5111e 100644
--- a/source/programsyntax.h
+++ b/source/programsyntax.h
@@ -20,6 +20,9 @@ struct NodeVisitor;
 
 struct Node
 {
+protected:
+	Node() { }
+	Node(const Node &) { }
 private:
 	Node &operator=(const Node &);
 public:
@@ -36,6 +39,7 @@ public:
 	NodePtr() { }
 	NodePtr(T *p): RefPtr<T>(p) { }
 	NodePtr(const NodePtr &p): RefPtr<T>(p ? p->clone() : 0) { }
+	NodePtr &operator=(const NodePtr &p) { RefPtr<T>::operator=(p); return *this; }
 
 	template<typename U>
 	NodePtr(const RefPtr<U> &p): RefPtr<T>(p) { }