Warning flags applied to system framework headers in Xcode 8.3 beta

Originator:me
Number:rdar://30230767 Date Originated:27-Jan-2017 09:47 AM
Status:Closed (Duplicate) Resolved:
Product:Developer Tools Product Version:8.3b1
Classification: Reproducible:Always
 
Summary:
Warning flags for a project are also applied to system framework headers in Xcode 8.3 beta resulting in build warnings and/or errors. This works properly in Xcode <= 8.2.x.

Steps to Reproduce:
1. Install Xcode 8.3b1
2. Open attached `SystemHeaderWarningsExample` project in Xcode 8.3b1
3. Build & run tests (Command + U)

Expected Results:
Build should finish without warnings or errors.

Actual Results:
Build fails with the following error: `Declaration of instance variables in the interface is deprecated`. The error originates in a system framework header, here in `XCTest/XCTWaiter.h` (and others).

Regression:
This problem occurs with Xcode 8.3b1 but not with Xcode 8.2.x.

Notes:
Adding `--system-header-prefix XCTest/` to `Other Warning Flags` explicitly fixes the problem.

Comments

Engineering has determined that your bug report (30230767) is a duplicate of another issue (30182468) and will be closed.

By me at Feb. 21, 2017, 9:45 a.m. (reply...)

Example project can be found here:

https://github.com/PSPDFKit-labs/radar.apple.com/tree/master/30230767%20-%20SystemHeaderWarningsExample

By me at Jan. 27, 2017, 9:04 a.m. (reply...)

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