Getting a segfault when doing "Save"

Ram_Rachum · November 27, 2010, 12:51pm

Hello,

On Mac (Leopard) when I try to open either a "save file" or a "load
file" dialog in my wxPython app, the app freezes for about a minute
and then exits saying "Segmentation fault". On Linux and Windows these
dialogs work perfectly, but on Mac they give the segfault.

Here's the line that should show the open dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578

And here's the line that should show the save dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638

Is anyone familiar with this problem? I'm not a C programmer so I have
no clue what to do about this.

Thanks,
Ram.

Robin · November 27, 2010, 8:34pm

What version of wxPython? Does the demo also have this problem? When you get the error report info what are the top few lines of the stack trace?

···

On 11/27/10 4:51 AM, cool-RR wrote:

Hello,

On Mac (Leopard) when I try to open either a "save file" or a "load
file" dialog in my wxPython app, the app freezes for about a minute
and then exits saying "Segmentation fault". On Linux and Windows these
dialogs work perfectly, but on Mac they give the segfault.

Here's the line that should show the open dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578

And here's the line that should show the save dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638

Is anyone familiar with this problem? I'm not a C programmer so I have
no clue what to do about this.

--
Robin Dunn
Software Craftsman

cool-RR.old · November 27, 2010, 9:04pm

wxPython version: 2.8.10.1.

Demo: I will try soon.

Here are all the details that Mac OS shows: (I’m not sure if this is a stack trace.)

“”"


Process: Python [4385]
Path: /Library/Frameworks/Python.framework/Versions/6.1/Resources/Python.app/Contents/MacOS/Python
Identifier: org.python.python
Version: 2.6.4 (2.6.4)
Code Type: X86 (Native)
Parent Process: bash [3988]
Date/Time: 2010-11-27 05:06:46.719 -0800
OS Version: Mac OS X 10.5.2 (9C31)
Report Version: 6
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000fffffffa
Crashed Thread: 0
Thread 0 Crashed:
0 libwx_macu-2.8.0.dylib 0x01af16e6 wxArrayString::Add(wxString const&, unsigned long) + 182
Thread 1:
0 libSystem.B.dylib 0x93f0db3a select$DARWIN_EXTSN + 10
1 org.python.python 0x00291295 PyEval_EvalFrameEx + 19429
2 org.python.python 0x0029340d PyEval_EvalCodeEx + 2109
3 org.python.python 0x0029147c PyEval_EvalFrameEx + 19916
4 org.python.python 0x0029340d PyEval_EvalCodeEx + 2109
5 org.python.python 0x0029147c PyEval_EvalFrameEx + 19916
6 org.python.python 0x00291c16 PyEval_EvalFrameEx + 21862
7 org.python.python 0x0029340d PyEval_EvalCodeEx + 2109
8 org.python.python 0x002108b6 function_call + 166
9 org.python.python 0x001dff35 PyObject_Call + 85
10 org.python.python 0x001f1d36 instancemethod_call + 422
11 org.python.python 0x001dff35 PyObject_Call + 85
12 org.python.python 0x0028b6ee PyEval_CallObjectWithKeywords + 78
13 org.python.python 0x002ccf1f t_bootstrap + 63
14 libSystem.B.dylib 0x93eeec55 _pthread_start + 321
15 libSystem.B.dylib 0x93eeeb12 thread_start + 34
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x0e66fba8 ebx: 0x01b6a030 ecx: 0x00000006 edx: 0x00000001
edi: 0xbfffc7f0 esi: 0x00000000 ebp: 0xbfffc7f0 esp: 0xbfffc540
ss: 0x0000001f efl: 0x00010246 eip: 0x01af16e6 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037
cr2: 0xfffffffa
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0x96764000 - 0x96c7afff com.apple.WebCore 5523.15.1 (5523.15.1) <23d5f6fe4905a5361b31b25bb4de04d6> /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore
0x96c7b000 - 0x96c7bffb com.apple.installserver.framework 1.0 (8) /System/Library/PrivateFrameworks/InstallServer.framework/Versions/A/InstallServer
0x96c7c000 - 0x96c9afff libresolv.9.dylib ??? (???) <0629b6dcd71f4aac6a891cbe26253e85> /usr/lib/libresolv.9.dylib
0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib
System details:

Model: MacPro3,1, BootROM MP11.005C.B08, 1 processor, Intel Core 2 Solo, 2.2 GHz, 1 GB
Graphics: spdisplays_display, sppci_pci_device, 128 MB
Memory Module: RAM slot #0/RAM slot #0, 1 GB, DRAM, 0 MHz
Network Service: Ethernet Adaptor (en0), Ethernet, en0
Parallel ATA Device: VMware Virtual IDE Hard Drive, 16.16 GB
Parallel ATA Device: VMware Virtual IDE CDROM Drive

“”"

Thanks,

Ram.

···

On Sat, Nov 27, 2010 at 10:34 PM, Robin Dunn robin@alldunn.com wrote:

On 11/27/10 4:51 AM, cool-RR wrote:

Hello,

On Mac (Leopard) when I try to open either a “save file” or a "load

file" dialog in my wxPython app, the app freezes for about a minute

and then exits saying “Segmentation fault”. On Linux and Windows these

dialogs work perfectly, but on Mac they give the segfault.

Here’s the line that should show the open dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578

And here’s the line that should show the save dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638

Is anyone familiar with this problem? I’m not a C programmer so I have

no clue what to do about this.

What version of wxPython? Does the demo also have this problem? When you get the error report info what are the top few lines of the stack trace?

–

Robin Dunn

cool-RR.old · November 27, 2010, 9:28pm

Tried it on the demo now: In the demo FileDialog does work without issue.

Ram.

···

On Sat, Nov 27, 2010 at 11:04 PM, cool-RR cool-rr@cool-rr.com wrote:

On Sat, Nov 27, 2010 at 10:34 PM, Robin Dunn robin@alldunn.com wrote:

On 11/27/10 4:51 AM, cool-RR wrote:

Hello,

On Mac (Leopard) when I try to open either a “save file” or a "load

file" dialog in my wxPython app, the app freezes for about a minute

and then exits saying “Segmentation fault”. On Linux and Windows these

dialogs work perfectly, but on Mac they give the segfault.

Here’s the line that should show the open dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578

And here’s the line that should show the save dialog:

https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638

Is anyone familiar with this problem? I’m not a C programmer so I have

no clue what to do about this.

What version of wxPython? Does the demo also have this problem? When you get the error report info what are the top few lines of the stack trace?

–

Robin Dunn

wxPython version: 2.8.10.1.

Demo: I will try soon.

Here are all the details that Mac OS shows: (I’m not sure if this is a stack trace.)

“”"


Process: Python [4385]
Path: /Library/Frameworks/Python.framework/Versions/6.1/Resources/Python.app/Contents/MacOS/Python
Identifier: org.python.python
Version: 2.6.4 (2.6.4)
Code Type: X86 (Native)
Parent Process: bash [3988]
Date/Time: 2010-11-27 05:06:46.719 -0800
OS Version: Mac OS X 10.5.2 (9C31)
Report Version: 6
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x00000000fffffffa
Crashed Thread: 0
Thread 0 Crashed:
0 libwx_macu-2.8.0.dylib 0x01af16e6 wxArrayString::Add(wxString const&, unsigned long) + 182
Thread 1:
0 libSystem.B.dylib 0x93f0db3a select$DARWIN_EXTSN + 10
1 org.python.python 0x00291295 PyEval_EvalFrameEx + 19429
2 org.python.python 0x0029340d PyEval_EvalCodeEx + 2109
3 org.python.python 0x0029147c PyEval_EvalFrameEx + 19916
4 org.python.python 0x0029340d PyEval_EvalCodeEx + 2109
5 org.python.python 0x0029147c PyEval_EvalFrameEx + 19916
6 org.python.python 0x00291c16 PyEval_EvalFrameEx + 21862
7 org.python.python 0x0029340d PyEval_EvalCodeEx + 2109
8 org.python.python 0x002108b6 function_call + 166
9 org.python.python 0x001dff35 PyObject_Call + 85
10 org.python.python 0x001f1d36 instancemethod_call + 422
11 org.python.python 0x001dff35 PyObject_Call + 85
12 org.python.python 0x0028b6ee PyEval_CallObjectWithKeywords + 78
13 org.python.python 0x002ccf1f t_bootstrap + 63
14 libSystem.B.dylib 0x93eeec55 _pthread_start + 321
15 libSystem.B.dylib 0x93eeeb12 thread_start + 34
Thread 0 crashed with X86 Thread State (32-bit):
eax: 0x0e66fba8 ebx: 0x01b6a030 ecx: 0x00000006 edx: 0x00000001
edi: 0xbfffc7f0 esi: 0x00000000 ebp: 0xbfffc7f0 esp: 0xbfffc540
ss: 0x0000001f efl: 0x00010246 eip: 0x01af16e6 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x00000000 gs: 0x00000037
cr2: 0xfffffffa
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0x94e2f000 - 0x94e88fff libGLU.dylib ??? (???) /System/Library/Frameworks/OpenGL.framework/Versions/A/Libraries/libGLU.dylib
0x94e89000 - 0x95c81ffe com.apple.QuickTimeComponents.component 7.2.1 (7.2.1) /System/Library/QuickTime/QuickTimeComponents.component/Contents/MacOS/QuickTimeComponents
0x95e01000 - 0x95e1cffb libPng.dylib ??? (???) <b6abcac36ec7654ff3e1cfa786b0117b> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/Resources/libPng.dylib
0x95e1d000 - 0x95f62ff7 com.apple.ImageIO.framework 2.0.1 (2.0.1) <68ba11e689a9ca30f8310935cd1e02d6> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
0x95f63000 - 0x95feefff com.apple.framework.IOKit 1.5.1 (???) <a17f9f5ea7e8016a467e67349f4d3d03> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x95fef000 - 0x96082fff com.apple.ink.framework 101.3 (86) <bf3fa8927b4b8baae92381a976fd2079> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/Ink.framework/Versions/A/Ink
0x96083000 - 0x96085ff1 com.apple.QuickTimeH264.component 7.2.1 (7.2.1) /System/Library/QuickTime/QuickTimeH264.component/Contents/MacOS/QuickTimeH264
0x960ca000 - 0x96763fff com.apple.CoreGraphics 1.351.21 (???) <6c93fd21149f389129fe47fa6ef71880> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
0x96764000 - 0x96c7afff com.apple.WebCore 5523.15.1 (5523.15.1) <23d5f6fe4905a5361b31b25bb4de04d6> /System/Library/Frameworks/WebKit.framework/Versions/A/Frameworks/WebCore.framework/Versions/A/WebCore
0x96c7b000 - 0x96c7bffb com.apple.installserver.framework 1.0 (8) /System/Library/PrivateFrameworks/InstallServer.framework/Versions/A/InstallServer
0x96c7c000 - 0x96c9afff libresolv.9.dylib ??? (???) <0629b6dcd71f4aac6a891cbe26253e85> /usr/lib/libresolv.9.dylib
0xfffe8000 - 0xfffebfff libobjc.A.dylib ??? (???) /usr/lib/libobjc.A.dylib
0xffff0000 - 0xffff1780 libSystem.B.dylib ??? (???) /usr/lib/libSystem.B.dylib
System details:

Model: MacPro3,1, BootROM MP11.005C.B08, 1 processor, Intel Core 2 Solo, 2.2 GHz, 1 GB
Graphics: spdisplays_display, sppci_pci_device, 128 MB
Memory Module: RAM slot #0/RAM slot #0, 1 GB, DRAM, 0 MHz
Network Service: Ethernet Adaptor (en0), Ethernet, en0
Parallel ATA Device: VMware Virtual IDE Hard Drive, 16.16 GB
Parallel ATA Device: VMware Virtual IDE CDROM Drive

“”"

Thanks,

Ram.

cool-RR.old · December 8, 2010, 12:28am

I figured it out: The problem is with the wildcard text. This is the wildcard text I was using:

‘GarlicSim Simulation Pickle (.gssp)|.gssp|All files ()||’

The problem is that I was putting a | at the end of the string, when it should just be a separator between adjacent file types. Windows and Linux have no problem with this, but on Mac it causes a segfault.

So now I fixed to this:

‘GarlicSim Simulation Pickle (.gssp)|.gssp|All files ()|’

And everything’s working.

It would be nice to have some assert in the FileDialog code that will alert the programmer if a bad wildcard is used.

While we’re on the subject of wildcards, do you think it’s preferable to use * or *.* for “All files”?

Ram.

···

On Sun, Nov 28, 2010 at 12:47 AM, Robin Dunn robin@alldunn.com wrote:

On 11/27/10 1:28 PM, cool-RR wrote:

On Sat, Nov 27, 2010 at 11:04 PM, cool-RR <cool-rr@cool-rr.com > > mailto:cool-rr@cool-rr.com> wrote:

On Sat, Nov 27, 2010 at 10:34 PM, Robin Dunn <robin@alldunn.com > > <mailto:robin@alldunn.com>> wrote:



    On 11/27/10 4:51 AM, cool-RR wrote:



        Hello,



        On Mac (Leopard) when I try to open either a "save file" or

        a "load

        file" dialog in my wxPython app, the app freezes for about a

        minute

        and then exits saying "Segmentation fault". On Linux and

        Windows these

        dialogs work perfectly, but on Mac they give the segfault.



        Here's the line that should show the open dialog:



        [https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578](https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578)




        And here's the line that should show the save dialog:



        [https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638](https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638)




        Is anyone familiar with this problem? I'm not a C programmer

        so I have

        no clue what to do about this.





    What version of wxPython?  Does the demo also have this problem?

      When you get the error report info what are the top few lines

    of the stack trace?



    --

    Robin Dunn





wxPython version: 2.8.10.1.



Demo: I will try soon.



Here are all the details that Mac OS shows: (I'm not sure if this is

a stack trace.)

Thread 0 Crashed:

0   libwx_macu-2.8.0.dylib          0x01af16e6 wxArrayString::Add(wxString const&, unsigned long) + 182

Hmm… Looks like with the debug info we’re not going to get any helpful information from that.

Tried it on the demo now: In the demo FileDialog does work without

issue.

Well, that’s a good clue. See if you can figure out what you are doing differently and that may lead to a fix.
Robin Dunn

Chris_Barker1 · December 8, 2010, 12:38am

I think *.* means "all files with a dot in the name" in non-windows platforms, so probably not what you want.

-Chris

···

On 12/7/10 4:28 PM, cool-RR wrote:

While we're on the subject of wildcards, do you think it's preferable to
use `*` or `*.*` for "All files"?

--
Christopher Barker, Ph.D.
Oceanographer

Emergency Response Division
NOAA/NOS/OR&R (206) 526-6959 voice
7600 Sand Point Way NE (206) 526-6329 fax
Seattle, WA 98115 (206) 526-6317 main reception

Chris.Barker@noaa.gov

Robin · December 8, 2010, 12:42am

Please submit a bug ticket about this.

···

On 12/7/10 4:28 PM, cool-RR wrote:

On Sun, Nov 28, 2010 at 12:47 AM, Robin Dunn <robin@alldunn.com > <mailto:robin@alldunn.com>> wrote:

    On 11/27/10 1:28 PM, cool-RR wrote:

        On Sat, Nov 27, 2010 at 11:04 PM, cool-RR <cool-rr@cool-rr.com > <mailto:cool-rr@cool-rr.com> > <mailto:cool-rr@cool-rr.com>> wrote:

            On Sat, Nov 27, 2010 at 10:34 PM, Robin Dunn > <robin@alldunn.com <mailto:robin@alldunn.com> > <mailto:robin@alldunn.com>> wrote:

                On 11/27/10 4:51 AM, cool-RR wrote:

                    Hello,

                    On Mac (Leopard) when I try to open either a "save
        file" or
                    a "load
                    file" dialog in my wxPython app, the app freezes for
        about a
                    minute
                    and then exits saying "Segmentation fault". On Linux and
                    Windows these
                    dialogs work perfectly, but on Mac they give the
        segfault.

                    Here's the line that should show the open dialog:

        https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578

                    And here's the line that should show the save dialog:

        https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638

                    Is anyone familiar with this problem? I'm not a C
        programmer
                    so I have
                    no clue what to do about this.

                What version of wxPython? Does the demo also have this
        problem?
                  When you get the error report info what are the top
        few lines
                of the stack trace?

                --
                Robin Dunn

            wxPython version: 2.8.10.1.

            Demo: I will try soon.

            Here are all the details that Mac OS shows: (I'm not sure if
        this is
            a stack trace.)

            Thread 0 Crashed:
            0 libwx_macu-2.8.0.dylib 0x01af16e6
        wxArrayString::Add(wxString const&, unsigned long) + 182

    Hmm... Looks like with the debug info we're not going to get any
    helpful information from that.

        Tried it on the demo now: In the demo `FileDialog` *does* work
        without
        issue.

    Well, that's a good clue. See if you can figure out what you are
    doing differently and that may lead to a fix.
    Robin Dunn

I figured it out: The problem is with the wildcard text. This is the
wildcard text I was using:

'GarlicSim Simulation Pickle (*.gssp)|*.gssp|All files (*)|*|'

The problem is that I was putting a `|` at the end of the string, when
it should just be a separator between adjacent file types. Windows and
Linux have no problem with this, but on Mac it causes a segfault.

So now I fixed to this:

'GarlicSim Simulation Pickle (*.gssp)|*.gssp|All files (*)|*'

And everything's working.

It would be nice to have some `assert` in the `FileDialog` code that
will alert the programmer if a bad wildcard is used.

--
Robin Dunn
Software Craftsman

cool-RR.old · December 8, 2010, 12:47am

Done:

http://trac.wxwidgets.org/ticket/12757

Ram.

···

On Wed, Dec 8, 2010 at 2:42 AM, Robin Dunn robin@alldunn.com wrote:

On 12/7/10 4:28 PM, cool-RR wrote:

On Sun, Nov 28, 2010 at 12:47 AM, Robin Dunn <robin@alldunn.com > > mailto:robin@alldunn.com> wrote:

On 11/27/10 1:28 PM, cool-RR wrote:

    On Sat, Nov 27, 2010 at 11:04 PM, cool-RR <cool-rr@cool-rr.com > >  > >         <mailto:cool-rr@cool-rr.com> > > <mailto:cool-rr@cool-rr.com <mailto:cool-rr@cool-rr.com>>> wrote:



        On Sat, Nov 27, 2010 at 10:34 PM, Robin Dunn > >  > >         <robin@alldunn.com <mailto:robin@alldunn.com> > > <mailto:robin@alldunn.com <mailto:robin@alldunn.com>>> wrote:



            On 11/27/10 4:51 AM, cool-RR wrote:



                Hello,



                On Mac (Leopard) when I try to open either a "save

    file" or

                a "load

                file" dialog in my wxPython app, the app freezes for

    about a

                minute

                and then exits saying "Segmentation fault". On Linux and

                Windows these

                dialogs work perfectly, but on Mac they give the

    segfault.



                Here's the line that should show the open dialog:



    [https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578](https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L578)




                And here's the line that should show the save dialog:



    [https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638](https://github.com/cool-RR/GarlicSim/blob/shit_goes_in_state/garlicsim_wx/garlicsim_wx/frame/frame.py#L638)




                Is anyone familiar with this problem? I'm not a C

    programmer

                so I have

                no clue what to do about this.





            What version of wxPython?  Does the demo also have this

    problem?

              When you get the error report info what are the top

    few lines

            of the stack trace?



            --

            Robin Dunn





        wxPython version: 2.8.10.1.



        Demo: I will try soon.



        Here are all the details that Mac OS shows: (I'm not sure if

    this is

        a stack trace.)





        Thread 0 Crashed:

        0   libwx_macu-2.8.0.dylib          0x01af16e6

    wxArrayString::Add(wxString const&, unsigned long) + 182





Hmm...  Looks like with the debug info we're not going to get any

helpful information from that.  :-(







    Tried it on the demo now: In the demo `FileDialog` *does* work

    without

    issue.





Well, that's a good clue.  See if you can figure out what you are

doing differently and that may lead to a fix.

Robin Dunn

I figured it out: The problem is with the wildcard text. This is the

wildcard text I was using:

‘GarlicSim Simulation Pickle (.gssp)|.gssp|All files ()||’

The problem is that I was putting a | at the end of the string, when

it should just be a separator between adjacent file types. Windows and

Linux have no problem with this, but on Mac it causes a segfault.

So now I fixed to this:

‘GarlicSim Simulation Pickle (.gssp)|.gssp|All files ()|’

And everything’s working.

It would be nice to have some assert in the FileDialog code that

will alert the programmer if a bad wildcard is used.

Please submit a bug ticket about this.

Robin Dunn