On Mar 7, 2014, at 10:49 AM, Jens Alfke <[email protected]> wrote:
> On Mar 7, 2014, at 4:54 AM, Bill Cheeseman <[email protected]> wrote:
>
>> However, when I run it on Mac OS X 10.7 Lion, I get a runtime error claiming
>> it encountered an invalid argument, namely, the unrecognized selector
>> -objectAtIndexedSubscript:. The NSArray Class Reference notes that
>> -objectAtIndexedSubscript: is available only in OS X 10.8 and later, and
>> that it is "identical to objectAtIndex:". Of course, -objectAtIndex: still
>> exists in the 10.9 API, and it is not marked as deprecated.
>> It appears, therefore, that the compiler generated a call to
>> -objectAtIndexedSubscript: even though my source specifies -objectAtIndex:
>> and a deployment version of 10.7.
>
> Backtrace, please? It’s possible it wasn’t that exact -objectAtIndex: call
> that raised the exception.
The relevant part of the crash log is reproduced below. You see that the crash
occurred in a call to +[PFUIElement QSWStandardizedOperatingSystemVersion].
PFUIElement is a class in the PFAssistive framework that I wrote which has been
in use in several of my commercial products for more than 10 years, updated
often. The relevant parts of the framework's +initialize and
+QSWStandardizedOperatingSystemVersion class methods will be reproduced in a
separate message in a moment. You will see that the call to
QSWStandardizedOperatingSystemVersion comes at the beginning of +Initialize,
and just a little way into QSWStandardizedOperatingSystemVersion it calls
-objectAtIndex:.
Application Specific Information:
objc[210]: garbage collection is OFF
*** Terminating app due to uncaught exception 'NSInvalidArgumentException',
reason: '-[__NSArrayM objectAtIndexedSubscript:]: unrecognized selector sent to
instance 0x7ff769c1ee10'
*** First throw call stack:
(
0 CoreFoundation 0x00007fff91e6bf56
__exceptionPreprocess + 198
1 libobjc.A.dylib 0x00007fff9a17dd5e
objc_exception_throw + 43
2 CoreFoundation 0x00007fff91ef81be -[NSObject
doesNotRecognizeSelector:] + 190
3 CoreFoundation 0x00007fff91e58e23
___forwarding___ + 371
4 CoreFoundation 0x00007fff91e58c38
_CF_forwarding_prep_0 + 232
5 PFAssistive 0x00000001016bd3a7
+[PFUIElement QSWStandardizedOperatingSystemVersion] + 304
6 PFAssistive 0x00000001016bc1d0
+[PFUIElement initialize] + 72
7 libobjc.A.dylib 0x00007fff9a173662
_class_initialize + 320
8 libobjc.A.dylib 0x00007fff9a17355f
_class_initialize + 61
9 libobjc.A.dylib 0x00007fff9a173517
prepareForMethodLookup + 237
10 libobjc.A.dylib 0x00007fff9a1732bb lookUpMethod
+ 63
11 libobjc.A.dylib 0x00007fff9a170f3c objc_msgSend
+ 188
12 libobjc.A.dylib 0x00007fff9a1706ca
call_load_methods + 161
13 libobjc.A.dylib 0x00007fff9a17036b load_images
+ 233
14 ??? 0x00007fff6125a973 0x0 +
140734823246195
15 ??? 0x00007fff612662cd 0x0 +
140734823293645
16 ??? 0x00007fff6126627d 0x0 +
140734823293565
17 ??? 0x00007fff612670b7 0x0 +
140734823297207
18 ??? 0x00007fff6125c4dd 0x0 +
140734823253213
19 ??? 0x00007fff6126060b 0x0 +
140734823269899
20 ??? 0x00007fff6125a059 0x0 +
140734823243865
--
Bill Cheeseman - [email protected]
_______________________________________________
Cocoa-dev mailing list ([email protected])
Please do not post admin requests or moderator comments to the list.
Contact the moderators at cocoa-dev-admins(at)lists.apple.com
Help/Unsubscribe/Update your Subscription:
https://lists.apple.com/mailman/options/cocoa-dev/archive%40mail-archive.com
This email sent to [email protected]
