From 96730f80cbc3b2d5aec2967a61f16bb2f02853e6 Mon Sep 17 00:00:00 2001
From: Matthias Melcher <github@matthiasm.com>
Date: Fri, 1 Dec 2023 16:53:21 +0100
Subject: Adds some possible NULL references and small fixes

---
 src/Fl_String.cxx | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/Fl_String.cxx')

diff --git a/src/Fl_String.cxx b/src/Fl_String.cxx
index 1252f1202..8fd8e5f51 100644
--- a/src/Fl_String.cxx
+++ b/src/Fl_String.cxx
@@ -137,7 +137,8 @@ Fl_String &Fl_String::replace_(int at, int n_del, const char *ins, int n_ins) {
     ::memmove(buffer_+at, ins, n_ins);
   }
   size_ = new_size;
-  buffer_[size_] = 0;
+  if (buffer_)
+    buffer_[size_] = 0;
   return *this;
 }
 
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