Question

I use an open source to build my project. when I add EGOTextView to the project, it has Semantic Issues like:

Comparison of integers of different signs: 'int' and 'NSUInteger' (aka 'unsigned long')
Comparison of integers of different signs: 'NSInteger' (aka 'long') and 'NSUInteger' (aka 'unsigned long')

For example in source code:

     for (int i = 0; i < lines.count; i++)//lines is an array

I notice the project has build configure file which includes:

// Make CG and NS geometry types be the same. Mostly doesn't matter on iPhone, but this also makes NSInteger types be defined based on 'long' consistently, which avoids conflicting warnings from clang + llvm 2.7 about printf format checking

OTHER_CFLAGS = $(value) -DNS_BUILD_32_LIKE_64

According to the comments, I guess it causes the problems.
However, I don’t know the meaning for this OTHER_CFLAGS setting. And I also don’t know how to fix it so that it can avoid the semantic issues.

Could any one help me?

Thanks!

Answer 1

The configuration option you’re looking at won’t do anything about the warning you quoted. What you need to do is go into your build settings and search for the “sign comparison” warning. Turn that off.