iOS Xcode 4/LLVM Warning

[idelovski]

I don't get it! I have just put Xcode 4 on Mac and I am already hating everything about it. OK, some of it may be me, but this is crazy:

I have this warning - using result of assignment as condition without parentheses for this line:

if (retImage = [imgDatabase imageWithAddress:imgAddress returnCode:NULL])  {

even though I have -Wno-idiomatic-parentheses in Other Warning Flags. Plus, I have this line in the same file, but the compiler is ok with it:

if (self = [super init])  {

What is it that I'm missing here?

 

[lee.anderson]

If you actually are wanting to assign it in the if statement then put the entire line in an extra pair of parenthesis like this

if ((retImage = [imgDatabase imageWithAddress:imgAddress returnCode:NULL]))  {

 

[idelovski]

Does -Wno-idiomatic-parentheses serve any purpose?

Edit - "Missing Braces and Parentheses" option seem to be what I need here. Why compiler flag doesn't do what it's supposed to do is maybe a bug in compiler or maybe I just don't understand how modern stuff works.

 

[firewood]

I add an equality test to make it even more explicit:

if ( (retImage = [imgDatabase imageWithAddress:imgAddress returnCode:NULL]) != NULL )  { blah... }

 

[jiminaus]

Does -Wno-idiomatic-parentheses serve any purpose?

This is a gcc flag. Is it also clang flag? There's no mention of it in the Clang Compiler User's Manual?

 

[idelovski]

Thanks for the link. It seems like there really is no support for that flag. I should see how is Xcode then passing this "Missing Braces and Parentheses" option to it.

And PS, I see now that my first post is somewhat coarse so I want to add how I was one of those people who used Xcode in multiple windows setting. That and the fact that I was contemplating MacBook Air, but now I have no idea how could I fit everything on its screen when it's not at home/in the office on external monitor.