site_archiver@lists.apple.com Delivered-To: Cocoa-dev@lists.apple.com Saagar Jha

On Oct 23, 2018, at 17:15, James Walker <jamesw@frameforge3d.com> wrote:

On 10/23/18 3:12 PM, Saagar Jha wrote:

...

What build command are you using? I’m not seeing any warnings with this code, compiled with clang -x objective-c -framework AppKit -Wunguarded-availability -mmacosx-version-min=10.9 - :

If you compile with a deployment version of 10.9, I don't know if it even bothers to look at the else clause. Try -mmacosx-version-min=10.8.

Oops, that was a typo. I meant -mmacosx-version-min=10.8. Either way, @available is checked at runtime, so both cases must be compiled anyways.

...

#import <AppKit/AppKit.h>

int main() { NSPrintInfo *info; if (@available(macOS 10.9, *)) { info.orientation = NSPaperOrientationPortrait; } else { info.orientation = NSPortraitOrientation; } }

Regardless, if you really need a fix, you should be able to cast through NSInteger, instead of NSPrintingOperation, as a fallback.

I'm not sure what you mean by "cast through NSInteger", but if I say

info.orientation = (NSInteger) NSPortraitOrientation;

then there's an error, "assigning to NSPaperOrientation from incompatible type NSInteger (aka long)”.

I’m not seeing that error at all, even with -Wall -Wextra. What flags are you using?

...

Saagar Jha

...

On Oct 23, 2018, at 15:01, James Walker <jamesw@frameforge3d.com <mailto:jamesw@frameforge3d.com>> wrote:

I had some code like this

pInfo.orientation = NSPaperOrientationPortrait;

where pInfo is of type NSPrintInfo*. When compiling with -Wunguarded-availability, I got a warning saying that NSPaperOrientationPortrait is only available on macOS 10.9 and later. So I wanted to change it to:

if (@available( macOS 10.9, * )) { pInfo.orientation = NSPaperOrientationPortrait; } else { pInfo.orientation = NSPortraitOrientation }

But then I get an error, "assigning to NSPaperOrientation from incompatible type NSPrintingOrientation". If I fix the error by adding a typecast to NSPaperOrientation, then I get a warning that NSPaperOrientation is only available on 10.9 and later. Is there any way out of this roundabout, other than using a later deployment target?

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