On Aug 28, 2010, at 1:23 AM, John Ralls wrote:
>
> On Aug 27, 2010, at 6:18 PM, David Reiser wrote:
>
>>
>> On Aug 26, 2010, at 11:30 PM, John Ralls wrote:
>>
>>>
>>> On Aug 26, 2010, at 8:08 PM, David Reiser wrote:
>>>
>>>> Using gwen r1983, aqbanking r2095, and gnucash r19465, if I
>>>> Use gnucash to get transactions via ofxDC
>>>> Then go to Tools>Online Banking Setup and launch the the Aqbanking wizard,
>>>> gnucash crashes with the console reading:
>>>>
>>>> * 12:15:31 WARN <gwenhywfar> inherit.c: 180: Type "5f47140b" not derived
>>>> from this base type
>>>> Assertion failed: (xgui), function AB_Gui_ReadDialogPrefs, file abgui.c,
>>>> line 246.
>>>> Abort trap
>>>>
>>>> and the top of the backtrace:
>>>>
>>>> Exception Type: EXC_CRASH (SIGABRT)
>>>> Exception Codes: 0x0000000000000000, 0x0000000000000000
>>>> Crashed Thread: 0 Dispatch queue: com.apple.main-thread
>>>>
>>>> Application Specific Information:
>>>> Assertion failed: (xgui), function AB_Gui_ReadDialogPrefs, file abgui.c,
>>>> line 246.
>>>>
>>>>
>>>> Thread 0 Crashed: Dispatch queue: com.apple.main-thread
>>>> 0 libSystem.B.dylib 0x00007fff872913d6 __kill + 10
>>>> 1 libSystem.B.dylib 0x00007fff87331972 abort + 83
>>>> 2 libSystem.B.dylib 0x00007fff8731e9b4 __pthread_markcancel
>>>> + 0
>>>> 3 libaqbanking.32.dylib 0x0000000108573cf3
>>>> AB_Gui_ReadDialogPrefs + 196
>>>> 4 libgwenhywfar.59.dylib 0x0000000108af17b1
>>>> GWEN_Gui_ReadDialogPrefs + 86
>>>> 5 libgwenhywfar.59.dylib 0x0000000108aec7de GWEN_Dialog_new + 395
>>>> 6 libaqbanking.32.dylib 0x0000000108578e0a AB_SetupDialog_new +
>>>> 46
>>>> 7 libgncmod-aqbanking.dylib 0x00000001080b2c51
>>>> dai_wizard_button_clicked_cb + 266 (druid-ab-initial.c:241)
>>>>
>>>> On relaunching gnucash, getting into the wizard works, and retrieving
>>>> transactions works, but if I again try to open the setup wizard after
>>>> having retrieved transactions, I get the same crash.
>>>>
>>>> Martin thinks that it's related to gnucash still using multiple GWEN_GUI
>>>> objects:
>>>> "Only one of those objects is derived from AB_GUI, and for reasons unknown
>>>> to me at some times a false GUI object is chosen by Gnucash ... I
>>>> recommended multiple times to really, really create the GUI object and
>>>> init AqBanking once only (!), preferably upon plugin init."
>>>
>>> So do a debug build and find out for sure.
>>>
>>> Regards,
>>> John Ralls
>>>
>> Well, I can do the first half of that, but not the second. Can you provide
>> some guidance about what to do once the crash drops me into gdb?
>
> Well, the assert that's causing the trouble is the second one below:
> int AB_Gui_ReadDialogPrefs(GWEN_GUI *gui,
>
> const char *groupName,
>
> const char *altName,
>
> GWEN_DB_NODE **pDb) {
>
> AB_GUI *xgui;
>
>
> assert(gui);
>
> xgui=GWEN_INHERIT_GETDATA(GWEN_GUI, AB_GUI, gui);
>
> assert(xgui);
>
>
> if (groupName && *groupName) {
>
>
> Which means that the macro is producing a null result and Martin has wisely
> asserted it to prevent a protection crash later.
>
> Debugging macros is often painful, but in this case it's pretty
> straightforward: It's essentially a C++ template that wraps this function in
> gwenhywfar/src/base/inherit.c:
>
> void *GWEN_Inherit_FindData(GWEN_INHERITDATA_LIST *l,
> uint32_t id,
> int wantCreate){
> GWEN_INHERITDATA *ih;
>
> assert(l);
>
> DBG_VERBOUS(GWEN_LOGDOMAIN,
> "Searching for inheritance id \"%08x\"", id);
> ih=GWEN_InheritData_List_First(l);
> while(ih) {
> DBG_VERBOUS(GWEN_LOGDOMAIN,
> "Checking type \"%s\" (%08x) against %08x",
> ih->typeName, ih->id, id);
> if (ih->id==id)
> return ih->data;
> ih=GWEN_InheritData_List_Next(ih);
> } /* while */
> if (!wantCreate) {
> DBG_WARN(GWEN_LOGDOMAIN,
> "Type \"%08x\" not derived from this base type", id);
> }
> return 0;
> }
>
> Notice that it's looking through a linked list (which is the first parameter)
> to find an item with an id that matches the second one. There are two
> possible reasons that this would fail: Either the list is empty or it has no
> relevant members. You want to find out which it is and tell Martin and
> Christian so that they can figure out what went wrong.
>
> So open the wizard in gdb, but don't run it yet. You need to set two
> breakpoints first:
> gdb> b abgui.c:245
> ***message about the new breakpoint
> gdb> b GWEN_Inherit_FindData
> ***message about the new breakpoint
> gdb> dis 2 (This turns off the GWEN_Inherit_FindData breakpoint until you're
> ready for it)
> gdb> r (Run the wizard. Do whatever you did before to make it assert. When it
> gets to the first breakpoint, it will stop, tell you about the breakpoint it
> hit, and give you a prompt)
> gdb> ena 2 (Turn the GWEN_Inherit_FindData breakpoint back on)
> gdb> c (resume execution. It will almost immediately stop in the GWEN_Inherit
> function with a breakpoint message and a prompt.)
>
> Now is where the interesting work happens. Step through the code (the "n"
> command executes a line, the "s" command steps into a function call, but
> there aren't any interesting ones here, so just use n) until you enter the
> while loop. (If you don't, then the list is empty and you're done for now.)
> Set a watchpoint on id->id:
> gdb> watch id->id
> This will display the value of id->id on every iteration. Once you get to the
> "return 0" statement you can quit gdb (it's OK to kill the running process,
> it's just going to assert as soon as the function returns anyway), and copy
> gdb's output from your terminal window to an email for Martin and Christian
> to digest.
>
> Regards,
> John Ralls
Thank you for the very detailed instructions -- I need that level of guidance.
Things looked to be headed in the right direction, but gnucash crashes before I
get to the second breakpoint.
If I run gnucash once with a successful aqbanking wizard run to 'prime' the
label pump, when I set the breakpoints, I get:
(gdb) b abgui.c:245
Breakpoint 1 at 0x1062ffc99: file abgui.c, line 245.
(gdb) b GWEN_Inherit_FindData
Breakpoint 2 at 0x106adf006: file _string.h, line 114.
The second breakpoint filename looks a bit weird to me, but I don't have
anything else to go on.
If I try to set a breakpoint in inherit.c, gdb says there is no such source
file. If I leave it as a pending breakpoint, gnucash still crashes before
catching the breakpoint -- where the crash is reported at inherit.c:180.
The abgui.c breakpoint works fine.
Have I done something wrong setting things up?
Dave
--
David Reiser
[email protected]
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