[kmail2] [Bug 389804] New: Crash on clicking on spam folder

[Allan Sandfeld]

https://bugs.kde.org/show_bug.cgi?id=389804

            Bug ID: 389804
           Summary: Crash on clicking on spam folder
           Product: kmail2
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: NOR
         Component: message list
          Assignee: kdepim-bugs at kde.org
          Reporter: kde at carewolf.com
  Target Milestone: ---

KMail now consistently crashes when I click on my spam folder (which somehow
also got itself changed to "act on new email"). 

The backtrace shows it is a recursive loop and probably a stack-overflow. It
has more than 4000 entries that all look the same:

Thread 1 "kmail" received signal SIGSEGV, Segmentation fault.
0x00007ffff5796ea2 in QListData::append(int) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
(gdb) bt
#0  0x00007ffff5796ea2 in QListData::append(int) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007ffff3ab2f40 in QList<MessageList::Core::MessageItem*>::append
(this=<optimized out>, t=<optimized out>)
    at /usr/include/x86_64-linux-gnu/qt5/QtCore/qlist.h:602
#2  0x00007ffff3aaeb6d in MessageList::Core::MessageItem::subTreeToList
(this=0x8efabf0, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:587
#3  0x00007ffff3aaebaf in MessageList::Core::MessageItem::subTreeToList
(this=<optimized out>, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:594
#4  0x00007ffff3aaebaf in MessageList::Core::MessageItem::subTreeToList
(this=<optimized out>, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:594
#5  0x00007ffff3aaebaf in MessageList::Core::MessageItem::subTreeToList
(this=<optimized out>, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:594

<snip>
#33943 0x00007ffff3aaebaf in MessageList::Core::MessageItem::subTreeToList
(this=<optimized out>, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:594
#33944 0x00007ffff3aaebaf in MessageList::Core::MessageItem::subTreeToList
(this=<optimized out>, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:594
#33945 0x00007ffff3aaebaf in MessageList::Core::MessageItem::subTreeToList
(this=<optimized out>, list=...)
    at /workspace/build/messagelist/src/core/messageitem.cpp:594

I haven't found the bottom. The kmail version is 17.12.1 from neon.

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