[Commits] [SCM] claws branch, master, updated. 3.17.3-178-g1452caa

[ticho at claws-mail.org]

The branch, master has been updated
       via  1452caa22726992296a5a68904891661b03821b6 (commit)
      from  00081bf42a2c4a02d3aa0e6fc2058f8cc49414b0 (commit)

Summary of changes:
 src/messageview.c |    6 ++++++
 1 file changed, 6 insertions(+)


- Log -----------------------------------------------------------------
commit 1452caa22726992296a5a68904891661b03821b6
Author: Andrej Kacian <ticho at claws-mail.org>
Date:   Tue May 14 16:01:40 2019 +0200

    Fix a use after free crash when deleting message via a separate messageview
    
    After the message has been deleted, summary_show() will
    redisplay the folder and free all the MsgInfos, but we still
    need the one for the message currently displayed in our
    messageview window, so we add our own reference to it, and free
    it ourselves when we're done.
    
    This was only happening when summaryview already has a different
    message displayed.
    
    Fixes bug #4029: segfault after deleting message in a window

diff --git a/src/messageview.c b/src/messageview.c
index 62d63ad..2f7a828 100644
--- a/src/messageview.c
+++ b/src/messageview.c
@@ -1666,6 +1666,10 @@ void messageview_delete(MessageView *msgview)
 
 		cm_return_if_fail(msginfo != NULL);
 
+		/* We will need to access the original message's msginfo
+		 * later, so we add our own reference. */
+		procmsg_msginfo_new_ref(msginfo);
+
 		/* to get the trash folder, we have to choose either
 		 * the folder's or account's trash default - we prefer
 		 * the one in the account prefs */
@@ -1689,6 +1693,8 @@ void messageview_delete(MessageView *msgview)
 			procmsg_msginfo_set_flags(msginfo, MSG_DELETED, 0);
 			/* NOTE: does not update to next message in summaryview */
 		}
+
+		procmsg_msginfo_free(&msginfo);
 	}
 #ifdef GENERIC_UMPC
 	if (msgview->window && !prefs_common.always_show_msg) {

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