It really was the wrong format specifier. Turns out the crash was on the next line where I used %d and %@ together. The -1 was an indicator of the issue but not the cause of my crash.
Thanks for the quick look. I will try that warning flag. I haven’t changed any of those flags so it may very well be warning me. On Feb 19, 2016, at 4:44 PM, Jean-Daniel Dupas <[email protected]<mailto:[email protected]>> wrote: Le 19 févr. 2016 à 22:29, Jens Alfke <[email protected]<mailto:[email protected]>> a écrit : On Feb 19, 2016, at 1:17 PM, Jim Adams <[email protected]<mailto:[email protected]>> wrote: SLogInfo(@"Starting csi %ld count %d", csi, sortedEvents.count); In the console I see: INFO: Starting csi -1 count -1 The very next line crashes when the sortedEvents are accessed. What could cause the array to have a -1 count? You’re using the wrong format strings for both of those parameters. csi is 64-bit so you need %lld. The formatter sees %ld and thinks it’s 32-bit not 64-bit, so it skips the wrong amount of space on the stack when going to the next parameter, which is why you then get a bogus value for the count. Also, NSArray.count is of type NSUInteger, which is unsigned, and has different sizes on different platforms. The right format specifier is either %lu (in a 32-bit app) or %llu (in 64-bit). Not exactly. %d is for 32 bit signed integer, but %ld is for signed long, and so is the right formatter for NSInteger value (which is a typedef alias of long) and 64 bit integer on 64 bit platform. %lld is for signed long long and is the same as long for most platform. _______________________________________________ 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]
