From d1c6d170acf1117b8a1709eef741c6ff2cc414e0 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?S=C3=A9bastien=20Helleu?= <flashcode@flashtux.org>
Date: Wed, 22 Feb 2023 20:38:56 +0100
Subject: [PATCH] core: fix crash in case of NULL message sent to function
 gui_chat_printf_y_date_tags (issue #1883)

---
 ChangeLog.adoc     | 1 +
 src/gui/gui-chat.c | 3 +++
 2 files changed, 4 insertions(+)

diff --git a/ChangeLog.adoc b/ChangeLog.adoc
index 3e06bc395..dc518e059 100644
--- a/ChangeLog.adoc
+++ b/ChangeLog.adoc
@@ -21,6 +21,7 @@ https://weechat.org/files/releasenotes/ReleaseNotes-devel.html[release notes]
 Bug fixes::
 
   * core, plugins: fix integer overflow in loops (issue #2178)
+  * core: fix crash in case of NULL message sent to function gui_chat_printf_y_date_tags (issue #1883)
 
 Build::
 
diff --git a/src/gui/gui-chat.c b/src/gui/gui-chat.c
index 7b89f2a0f..6841b95ff 100644
--- a/src/gui/gui-chat.c
+++ b/src/gui/gui-chat.c
@@ -906,6 +906,9 @@ gui_chat_printf_y_date_tags (struct t_gui_buffer *buffer, int y, time_t date,
     time_t date_printed;
     int i, last_y, num_lines_to_add;
 
+    if (!message)
+        return;
+
     if (gui_init_ok && !gui_chat_buffer_valid (buffer, GUI_BUFFER_TYPE_FREE))
         return;