Hint crash about sdd-sudoku-teacher HOT 2 CLOSED

Crash report:

Incident Identifier: 3EE5663A-CFFE-4BC9-A372-B6843AFFC3EE
CrashReporter Key:   3f3aae40421aeeb41cc85538a77b2dc32a248145
Hardware Model:      iPhone4,1
Process:             Sudoku Teacher [8271]
Path:                /var/mobile/Applications/776F1E80-09E6-4A9C-A5EB-0D1DDB668259/Sudoku Teacher.app/Sudoku Teacher
Identifier:          PuzzleProfessors.Sudoku-Teacher
Version:             1.0 (1.0)
Code Type:           ARM (Native)
Parent Process:      launchd [1]
Date/Time:           2013-11-21 17:02:27.662 -0500
OS Version:          iOS 7.0.4 (11B554a)
Report Version:      104
Exception Type:  EXC_BAD_ACCESS (SIGSEGV)
Exception Subtype: KERN_INVALID_ADDRESS at 0x00000000
Triggered by Thread:  0
Thread 0 Crashed:
0   Sudoku Teacher                  0x0006a4ac -[HintsMaker createHints:] (HintsMaker.m:15)
1   Sudoku Teacher                  0x00068a80 -[PPHintViewController setupHintInterfaces] (PPHintViewController.m:97)
2   Sudoku Teacher                  0x000686d8 -[PPHintViewController viewWillAppear:] (PPHintViewController.m:52)
3   UIKit                           0x310f30e6 -[UIViewController _setViewAppearState:isAnimating:] + 342
4   UIKit                           0x312694ba -[UINavigationController _startCustomTransition:] + 842
5   UIKit                           0x3118726e -[UINavigationController _startDeferredTransitionIfNeeded:] + 414
6   UIKit                           0x31187078 -[UINavigationController __viewWillLayoutSubviews] + 40
7   UIKit                           0x31187010 -[UILayoutContainerView layoutSubviews] + 180
8   UIKit                           0x310d8d9e -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 342
9   QuartzCore                      0x30d5fc66 -[CALayer layoutSublayers] + 138
10  QuartzCore                      0x30d5b476 CA::Layer::layout_if_needed(CA::Transaction*) + 346
11  QuartzCore                      0x30d5b308 CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 12
12  QuartzCore                      0x30d5ad1a CA::Context::commit_transaction(CA::Transaction*) + 226
13  QuartzCore                      0x30d5ab2a CA::Transaction::commit() + 310
14  QuartzCore                      0x30d54858 CA::Transaction::observer_callback(__CFRunLoopObserver*, unsigned long, void*) + 52
15  CoreFoundation                  0x2e9311ca __CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 18
16  CoreFoundation                  0x2e92eb6c __CFRunLoopDoObservers + 280
17  CoreFoundation                  0x2e92eeae __CFRunLoopRun + 726
18  CoreFoundation                  0x2e899c22 CFRunLoopRunSpecific + 518
19  CoreFoundation                  0x2e899a06 CFRunLoopRunInMode + 102
20  GraphicsServices                0x335c027e GSEventRunModal + 134
21  UIKit                           0x3113d044 UIApplicationMain + 1132
22  Sudoku Teacher                  0x00066afe main (main.m:17)
23  libdyld.dylib                   0x392aeab4 start + 0

from sdd-sudoku-teacher.

Hopefully fixed in revision 316d8a3. It's hard to say, since it only happened once and I couldn't repeat it.

The idea is that switching from short theResults = calloc(4, sizeof(short)); to short theResults[4]; should make it so theResults can't be null (0x00000000).

from sdd-sudoku-teacher.