Re: crash when IMAP server crashes

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On Fri, 25 Mar 2016 13:32:50 +0200 Nerijus Baliunas <[email protected]> wrote:

NB> I have some old messages, and when I try to open them, dovecot dies:

 You probably should report this to Dovecot people in any case...

NB> I get an assert in M:
NB> 
NB> Program received signal SIGTRAP, Trace/breakpoint trap.
NB> 0x00000000005f4b01 in MessageCC::GetBody (this=0xfc0a10) at .src/mail/MessageCC.cpp:738
NB> 738	   ASSERT_MSG( m_Body && m_Envelope, _T("failed to get body and envelope!") );
NB> (gdb) bt
NB> #0  0x00000000005f4b01 in MessageCC::GetBody() (this=0xfc0a10) at .src/mail/MessageCC.cpp:738
NB> #1  0x00000000005f5467 in MessageCC::CheckBody() const (this=0xfc0a10) at /a/M/M/include/MessageCC.h:176
NB> #2  0x00000000005f3669 in MessageCC::CheckMIME() const (this=0xfc0a10) at .src/mail/MessageCC.cpp:507
NB> #3  0x00000000005f374c in MessageCC::GetTopMimePart() const (this=0xfc0a10) at .src/mail/MessageCC.cpp:532
NB> #4  0x000000000048c2ac in MessageView::Update() (this=0xee6400) at .src/classes/MessageView.cpp:3060

 The assert in GetBody() definitely seems wrong, there doesn't seem any
reason to assume that mail_fetchstructure() can't fail -- and we even see
that it can. So it should be removed and replaced with an ERRORMESSAGE().

NB> Usually after a few continues M crashes.

 This must be due to dereferencing either the envelope or body pointer
somewhere without checking if it's null, but I don't immediately see where
does happen. Can you catch the crash under the debugger as well please?

 Thanks,
VZ

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