Re: [Qemu-devel] [PATCH] ui/cocoa.m: Add Mount image file menu item

[Markus Armbruster]

Programmingkid <address@hidden> writes:

> On Sep 10, 2015, at 3:21 AM, Markus Armbruster wrote:
>
>> Programmingkid <address@hidden> writes:
>> 
>>> Does this look about right?
>>> 
>>>    QDict *qdict;
>>>    Error *errp;
>>>    QObject **ret_data;
>>>    static int counter;
>>>    char *idString, *fileName;
>>> 
>>>     // The file variable is objective-c, left that code out
>>> 
>>>        fileName = g_strdup_printf("%s",
>>>                            [file cStringUsingEncoding: 
>>> NSASCIIStringEncoding]);
>>> 
>>>        /* Create an unique id */
>>>        idString = g_strdup_printf("USB%d", counter++);
>>> 
>>>        /* Create the QDICT object */
>>>        qdict = qdict_new();
>>>        qdict_put_obj(qdict, "id", qstring_from_str(idString));
>>>        qdict_put_obj(qdict, "device", qstring_from_str(idString));
>>>        qdict_put_obj(qdict, "if", qstring_from_str("none"));
>>>        qdict_put_obj(qdict, "file", qstring_from_str(fileName));
>>>        qdict_put_obj(qdict, "driver", qstring_from_str("usb-storage"));
>>>        drive_add(IF_DEFAULT, 0, fileName, "none");
>>>        qmp_device_add(qdict, ret_data, &errp);
>>>        handleAnyDeviceErrors(errp);
>>>        g_free(fileName);
>>>        g_free(idString);
>>> 
>>> This is a sample of what I am working on. For some reason, it crashes QEMU. 
>>> Any clues why? I think it might be because of qdict_put_obj(). 
>> 
>> My crystal ball is down for maintenance today, so you'll have to gives
>> us the clues yourself: a stack backtrace, for starters :)
>
> Here is the error:
>
> 2015-09-10 12:21:12.355 qemu-system-ppc[17603:903] HIToolbox: ignoring
> exception 'Uncaught system exception: signal 11' that raised inside
> Carbon event dispatch
> (
>       0 CoreFoundation 0x00007fff83ad37b4 __exceptionPreprocess +
> 180
>       1 libobjc.A.dylib 0x00007fff83567f03 objc_exception_throw + 45
>       2 CoreFoundation 0x00007fff83b2b969 -[NSException raise] + 9
>       3 ExceptionHandling 0x00007fff845082d3
> NSExceptionHandlerUncaughtSignalHandler + 37
>       4 libSystem.B.dylib 0x00007fff825431ba _sigtramp + 26
>       5 ???  0x00007fff5fc12dc0 0x0 + 140734799883712
>       6 qemu-system-ppc 0x00000001003c4109 qdict_get_try_str + 58
>       7 qemu-system-ppc 0x00000001003dba04 qemu_opts_from_qdict + 63
>       8 qemu-system-ppc 0x0000000100169388 qmp_device_add + 78

Crashes in qdict_get_try_str().  Use a debugger to find out what goes
wrong there.