Open Radar

 
Summary:
With -Wunused-result, -Wreturn-type, and -Wunused-value passed into Other Warning Flags, I was not getting any warning for the following code: [@[@"bacon", @"bakon", @"∆"] sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) { return NSOrderedDescending; }];

Steps to Reproduce:
1. Create a new Xcode project
2. Add -Wunused-result, -Wreturn-type, and -Wunused-value to your Other Warning Flags
3. Throw '[@[@"bacon", @"bakon", @"∆"] sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) { return NSOrderedDescending; }];' somewhere in your code
4. Build

Expected Results:
There should be a warning 

Actual Results:
There was no warning

Version:
OS X 10.10.3, Xcode Version 6.3.1 (6D1002), Apple LLVM version 6.1.0 (clang-602.0.49) (based on LLVM 3.6.0svn)

Notes:
Wouldn't have caught this if I didn't realize that I was sorting a non mutable array, I originally thought my sort was broken, took some time for me to realize that I wasn't saving the result of the sort. 

Configuration:
rMBP (Mid 2012)