From a7a1e1594c7c574b135a99f80edbf47a7352e974 Mon Sep 17 00:00:00 2001
From: Albrecht Schlosser <albrechts.fltk@online.de>
Date: Mon, 15 Jun 2020 01:38:18 +0200
Subject: [PATCH] Fix stale current_ pointer when deleting Fl_Group

If a user program accidentally deletes the "current" group, then
the pointer would still point at the deleted widget. This commit
prevents this and makes the Fl_Group's parent the current group.

Fixes issue #88.
---
 src/Fl_Group.cxx | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/Fl_Group.cxx b/src/Fl_Group.cxx
index aefead997..2ec83d493 100644
--- a/src/Fl_Group.cxx
+++ b/src/Fl_Group.cxx
@@ -452,6 +452,8 @@ void Fl_Group::clear() {
   widgets' destructors would be called twice!
 */
 Fl_Group::~Fl_Group() {
+  if (current_ == this)
+    end();
   clear();
 }