* [Bitcoin-development] Coin Control, Send crash on MacOS X
@ 2013-12-01 11:05 Warren Togami Jr.
[not found] ` <CA+s+GJA-rXF7spPwLDJv-hGRk-obohdJDHQ9D6bDTdh1UGZVEQ@mail.gmail.com>
0 siblings, 1 reply; 3+ messages in thread
From: Warren Togami Jr. @ 2013-12-01 11:05 UTC (permalink / raw)
To: Bitcoin Dev
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https://github.com/litecoin-project/bitcoinomg/commits/0.8.5-OMG6
http://download1.rpmfusion.org/~warren/bitcoin-0.8.5-OMG6/
I've been backporting patches from master and Litecoin to make a Bitcoin
0.8 client with more features. It works quite well on Linux and Win32.
http://pastebin.com/g8QqheGc
Today we discovered a rare crash that can happen on MacOS X. toffoo and
coblee reproduced it on MacOS X 10.9 and I reproduced it on 10.6.8. It
seems to be some kind of race condition involving SendCoinsEntry::clear().
1. 11 QtGui 0x00e28141
QWidget::setFocus(Qt::FocusReason) + 289
2. 12 org.bitcoinfoundation.Bitcoin-Qt 0x002ca665
SendCoinsEntry::clear() + 101
This build was made with Xcode 3.2.6 on MacOS X with MacPorts qt4-mac
qt-4.8.4, roughly meant to approximate Gavin's build environment for the
0.8.x releases.
With this unfamiliar build environment I have been unsuccessful at building
master so I am unable to confirm if this crash exists there. I am trying
qt-4.8.5 next ... but even if I manage to build it, it is exceedingly
difficult to reproduce...
Warren
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^ permalink raw reply [flat|nested] 3+ messages in thread[parent not found: <CA+s+GJA-rXF7spPwLDJv-hGRk-obohdJDHQ9D6bDTdh1UGZVEQ@mail.gmail.com>]
* Re: [Bitcoin-development] Coin Control, Send crash on MacOS X [not found] ` <CA+s+GJA-rXF7spPwLDJv-hGRk-obohdJDHQ9D6bDTdh1UGZVEQ@mail.gmail.com> @ 2013-12-04 1:57 ` Warren Togami Jr. 2013-12-04 7:02 ` Wladimir 0 siblings, 1 reply; 3+ messages in thread From: Warren Togami Jr. @ 2013-12-04 1:57 UTC (permalink / raw) To: Bitcoin Dev [-- Attachment #1: Type: text/plain, Size: 1449 bytes --] On Sun, Dec 1, 2013 at 1:19 AM, Wladimir <laanwj@gmail•com> wrote: > On Sun, Dec 1, 2013 at 12:05 PM, Warren Togami Jr. <wtogami@gmail•com>wrote: > >> https://github.com/litecoin-project/bitcoinomg/commits/0.8.5-OMG6 >> http://download1.rpmfusion.org/~warren/bitcoin-0.8.5-OMG6/ >> I've been backporting patches from master and Litecoin to make a Bitcoin >> 0.8 client with more features. It works quite well on Linux and Win32. >> >> http://pastebin.com/g8QqheGc >> Today we discovered a rare crash that can happen on MacOS X. toffoo and >> coblee reproduced it on MacOS X 10.9 and I reproduced it on 10.6.8. It >> seems to be some kind of race condition involving SendCoinsEntry::clear(). >> >> >> 1. 11 QtGui 0x00e28141 >> QWidget::setFocus(Qt::FocusReason) + 289 >> 2. 12 org.bitcoinfoundation.Bitcoin-Qt 0x002ca665 >> SendCoinsEntry::clear() + 101 >> >> > I don't think the setFocus should be in clear() in the first place. It > conflates clearing the widgets and changing the focus. > > If the automatic focus change is desirable at all it could be moved to a > seperate function "focusPayTo". > > In any case it's just a nicety and should just be removed if it causes > problems. > > Wladimir > > Did as you suggested, removed both setFocus() calls that happen after Send is clicked http://pastebin.com/j4adDpsM Now it crashes in something else within qt. I'm trying other things... Warren [-- Attachment #2: Type: text/html, Size: 3641 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [Bitcoin-development] Coin Control, Send crash on MacOS X 2013-12-04 1:57 ` Warren Togami Jr. @ 2013-12-04 7:02 ` Wladimir 0 siblings, 0 replies; 3+ messages in thread From: Wladimir @ 2013-12-04 7:02 UTC (permalink / raw) To: Warren Togami Jr.; +Cc: Bitcoin Dev [-- Attachment #1: Type: text/plain, Size: 584 bytes --] > > Did as you suggested, removed both setFocus() calls that happen after Send >> is clicked >> > > http://pastebin.com/j4adDpsM > Now it crashes in something else within qt. > > I'm trying other things... > As I've said to you on IRC before, I think the problem is with this loop: https://github.com/bitcoin/bitcoin/blob/master/src/qt/sendcoinsdialog.cpp#L261 This deletes widgets, but Qt may still be referring to them internally, and "Deleting a QObject while pending events are waiting to be delivered can cause a crash." Can you try replacing with ->deleteLater()? Wladimir [-- Attachment #2: Type: text/html, Size: 1662 bytes --] ^ permalink raw reply [flat|nested] 3+ messages in thread
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2013-12-01 11:05 [Bitcoin-development] Coin Control, Send crash on MacOS X Warren Togami Jr.
[not found] ` <CA+s+GJA-rXF7spPwLDJv-hGRk-obohdJDHQ9D6bDTdh1UGZVEQ@mail.gmail.com>
2013-12-04 1:57 ` Warren Togami Jr.
2013-12-04 7:02 ` Wladimir
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