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List:       haiku-bugs
Subject:    [Haiku-bugs] [Haiku] #1733: BAlert sometimes crashes (appears to be
From:       "Haiku" <trac () haiku-os ! org>
Date:       2008-01-28 1:51:22
Message-ID: 044.f4a86b9d0fcb4f6ec22e64e7467ed5e9 () haiku-os ! org
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#1733: BAlert sometimes crashes (appears to be somewhere in BMessage's internals)
----------------------------------+-----------------------------------------
 Reporter:  anevilyak             |       Owner:  axeld         
     Type:  bug                   |      Status:  new           
 Priority:  normal                |   Milestone:  R1            
Component:  Kits/Application Kit  |     Version:  R1 development
 Platform:  All                   |  
----------------------------------+-----------------------------------------
 In Vision, there is an option to warn you on pasting multiline messages.
 This brings up a BAlert that is constructed as follows:

 BString str;

 str += "As if there isn't enough, you ";
 str += "are about to add ";
 str << lines;
 str += " more lines of spam to ";
 str += "the internet.  How ";
 str += "would you like to go about this?";

 BAlert *alert (new BAlert (
 "Spam",
 str.String(),
 "Cancel",
 "Spam!",
 "Single Line",
 B_WIDTH_FROM_WIDEST,
 B_OFFSET_SPACING,
 B_WARNING_ALERT));

 BMessage *invokeMsg (new BMessage (msg));
 BInvoker *invoker (new BInvoker (invokeMsg, msgr));
 invokeMsg->AddPointer ("invoker", invoker);
 alert->Go (invoker);


 Roughly every other time, picking any of the presented options on the
 aforementioned alert results in a crash with the following trace:

 0x003d09a1 in BMessage::IsSourceWaiting () from /
 boot/beos/system/lib/libbe.so
 (gdb) bt
 #0  0x003d09a1 in BMessage::IsSourceWaiting ()
 from /boot/beos/system/lib/libbe.so
 #1  0x003d3158 in BMessage::_SendMessage () from /
 boot/beos/system/lib/libbe.so
 #2  0x003d97d8 in BMessenger::SendMessage ()
 from /boot/beos/system/lib/libbe.so
 #3  0x003d971b in BMessenger::SendMessage ()
 from /boot/beos/system/lib/libbe.so
 #4  0x003cb805 in BInvoker::Invoke () from /boot/
 beos/system/lib/libbe.so
 #5  0x003e8da3 in BAlert::MessageReceived ()
 from /boot/beos/system/lib/libbe.so
 #6  0x003ccd1b in BLooper::DispatchMessage ()
 from /boot/beos/system/lib/libbe.so
 #7  0x0046d769 in BWindow::DispatchMessage ()
 from /boot/beos/system/lib/libbe.so
 #8  0x003e8eeb in BAlert::DispatchMessage ()
 from /boot/beos/system/lib/libbe.so
 #9  0x00470f00 in BWindow::task_looper () from /
 boot/beos/system/lib/libbe.so
 #10 0x003ce253 in BLooper::_task0_ () from /boot/
 beos/system/lib/libbe.so
 #11 0x0086e264 in thread_entry () from /boot/beos/
 system/lib/libroot.so
 #12 0x70184fec in ?? ()

 Unfortunately I'm unable to debug this further using gdb because I've been
 unsuccessful at building debugging versions of libbe (halted by libroot
 failing to link).

-- 
Ticket URL: <http://dev.haiku-os.org/ticket/1733>
Haiku <http://dev.haiku-os.org>
The Haiku operating system.
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