From f271f67d2fc798079326e450bc0e53eb80fb2e96 Mon Sep 17 00:00:00 2001
From: Richard Kreckel <kreckel@ginac.de>
Date: Wed, 3 Feb 2021 14:40:49 +0100
Subject: [PATCH] Avoid "instantiation of variable 'reg_info' required..."
 warning.

With -Wundefined-var-template (on by default), CLang++ warns that
no definition for the static 'reg_info' member variable is available.
---
 ginac/exprseq.h | 3 +++
 ginac/lst.h     | 3 +++
 2 files changed, 6 insertions(+)

diff --git a/ginac/exprseq.h b/ginac/exprseq.h
index c0fb9070..d7e78385 100644
--- a/ginac/exprseq.h
+++ b/ginac/exprseq.h
@@ -31,6 +31,9 @@ namespace GiNaC {
 
 typedef container<std::vector> exprseq;
 
+/** Definition of container::reg_info for exprseq. */
+template<> registered_class_info exprseq::reg_info;
+
 // defined in exprseq.cpp
 template<> bool exprseq::info(unsigned inf) const;
 
diff --git a/ginac/lst.h b/ginac/lst.h
index 8591861c..5038fca6 100644
--- a/ginac/lst.h
+++ b/ginac/lst.h
@@ -31,6 +31,9 @@ namespace GiNaC {
 
 typedef container<std::list> lst;
 
+/** Definition of container::reg_info for lst. */
+template<> registered_class_info lst::reg_info;
+
 /** Specialization of container::get_default_flags() for lst. */
 template<> inline unsigned lst::get_default_flags() { return status_flags::not_shareable; }
 
-- 
2.45.0