This bug was filed from the Socorro interface and is report bp-c5fceb39-3e48-45e3-ac3c-d5a862120813 . ============================================================= Frame Module Signature Source 0 msvcr80.dll strlen F:\dd\vctools\crt_bld\SELF_X86\crt\src\intel\strlen.asm:69 1 xul.dll nsParseMailMessageState::FinalizeHeaders mailnews/local/src/nsParseMailbox.cpp:1346 2 xul.dll nsParseMailMessageState::ParseFolderLine mailnews/local/src/nsParseMailbox.cpp:711 3 xul.dll nsMsgMailboxParser::HandleLine mailnews/local/src/nsParseMailbox.cpp:526 4 xul.dll nsPop3Sink::WriteLineToMailbox mailnews/local/src/nsPop3Sink.cpp:750 5 xul.dll nsPop3Sink::IncorporateWrite mailnews/local/src/nsPop3Sink.cpp:737 6 xul.dll nsPop3Protocol::HandleLine mailnews/local/src/nsPop3Protocol.cpp:3636 7 xul.dll nsPop3Protocol::RetrResponse mailnews/local/src/nsPop3Protocol.cpp:3396 8 xul.dll nsPop3Protocol::ProcessProtocolState mailnews/local/src/nsPop3Protocol.cpp:4021 9 xul.dll nsMsgProtocol::OnDataAvailable mailnews/base/util/nsMsgProtocol.cpp:389 10 xul.dll nsInputStreamPump::OnStateTransfer netwerk/base/src/nsInputStreamPump.cpp:518

Another couple of functions returning int instead of nsresult... But I can't see the reason for the crash. Is this a single occurrence of this signature?

it is rare - about 8 per month, so there are multiple examples - https://crash-stats.mozilla.com/query/query?product=Thunderbird&version=ALL%3AALL&date=&range_value=4&range_unit=weeks&query_search=signature&query_type=exact&build_id=&process_type=all&do_query=1&query=nsParseMailMessageState%3A%3AFinalizeHeaders%28%29 and for all releases bp-a92e9062-9af8-4777-8aa8-5869d2120625 tb3.1.20 bp-2dfe8f08-a1dc-4666-87b2-350e02120723 tb13.0 bp-6c119dfb-802d-4da8-944d-29fae2120807 tb14.0 high percentage are startup crashes

(partly in followup to bug 877831 comment 14) Hiro had a patch in Bug #877831, fixed in TB 24.0.1 or 24.0.2? ... bug we still have this startup crashes: bp-94460041-e6e6-425f-b6cd-d98842140723 TB31.0 bp-0723a2fb-0ba4-4b39-a641-5ed772140801 TB31.0 linux bp-d1a459b6-20c5-48b2-ab42-8dc152140717 TB24.6.0 bp-b8832e62-f6a3-409d-aefe-9ecc52140805 TB24.6.0 Non-startup crashes are covered in bug 1051616 - but I don't know for a fact that any of them are different than the crashes cited in this bug. hiro do you want to continue your great work here?

Removing myslef on all the bugs I'm cced on. Please NI me if you need something on MailNews Core bugs from me.

(In reply to :aceman from comment #1) > Another couple of functions returning int instead of nsresult... > > But I can't see the reason for the crash. Is this a single occurrence of > this signature? see bug 1051616

no crashes for >2 months strlen | nsParseMailMessageState::FinalizeHeaders only 6 crashes for nsParseMailMessageState::FinalizeHeaders, all 52.5.2. I think only bp-e24ad70e-d067-4e68-bf20-57b200180108 has s decent stack. None are startup, so they are all of the flavor of bug 1051616. No crashes since Feb 1, and no crashes in 52.6.0.