Xcode 4.6 zXing compile error after Xcode update (4H127)

Question

Different projects using ZXing have error after last Xcode update:

Error messages are:

1. private field \'cached_y_\' is not used
2. Private field \

Answer 1

They have the project set up to treat warnings as errors. Turn off that setting and it should compile, so you can at least run the sample code.

Also tell them so they can fix the warnings.