Building with std=gnu99 warns about binary `?:` with `gnu-conditional-omitted-operand`

Originator:heath.borders
Number:rdar://27765765 Date Originated:09-Aug-2016 10:15 AM
Status:Open Resolved:
Product:Developer Tools Product Version:Version 8 beta 4 (8S188o)
Classification:Other Bug Reproducible:Always
 
I build with `std=gnu99` and `-Weverything` with some warnings disabled , but when I use `?:` as a binary operator,  I get a `gnu-conditional-omitted-operand` warning.

Steps to Reproduce:
Build the following code:

```
NSURL *url = [NSURL URLWithString:@"http://example.com"];
NSString *absoluteString = url.absoluteString ?: @"null absoluteString";

Expected Results:
No warning should be emitted.

Actual Results:
A `gnu-conditional-omitted-operand`

Comments


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