Subclass overridden method is not called with WMO enabled and Testability disabled

Originator:vixentael
Number:rdar://25412647 Date Originated:29-03-2016
Status:Closed Resolved:Patched
Product:Developer tools Product Version:xcode 7.3 (7D175), any iOS version
Classification: Reproducible:Always
 
Summary:
Child's overriddenMethod is never called.
In case if you will compile a code with "Swift Compiler Whole Module Optimization Enabled = YES" and "Testability" = NO.

Steps to Reproduce:
1. Enable "Swift Compiler Whole Module Optimization", 
2. Disable  "Testability",
3. Build, 
4. Run 

Expected Results:
Child method should be called

Actual Results:
Child method isn't called, but parent method does.

Version:
sample code:
https://gist.github.com/PaulTaykalo/5c97010874a93626ca3c

sample project:
https://dl.dropboxusercontent.com/u/11487658/test_wmo.zip

Notes:


Configuration:
xcode 7.3 (7D175), any iOS version

Attachments:
'test_wmo.zip' was successfully uploaded.

Comments

Patched for Swift 2.2.1

https://github.com/apple/swift/pull/1954

https://github.com/apple/swift/pull/1923

By vixentael at April 18, 2016, 7:43 a.m. (reply...)

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