[swift-dev] Debugging on Xcode
mgottesman at apple.com
Fri Aug 11 19:08:31 CDT 2017
Add to debugging the compiler?
Sent from my iPhone
> On Aug 11, 2017, at 11:38 AM, Robert Widmann via swift-dev <swift-dev at swift.org> wrote:
> Full disclaimer: I haven’t looked into this bug, so I’m just going to describe higher-level workflow tips.
>> On Aug 11, 2017, at 5:02 AM, Mike Choi via swift-dev <swift-dev at swift.org> wrote:
>> Hello Swift community,
>> I’m currently trying to debug SR-5556 https://bugs.swift.org/plugins/servlet/mobile#issue/SR-5556.
>> TL;Dr This bug has to do with Xcode not providing a fixit when it should.
> The way to do what you’re asking for is to build a toolchain, which is far too time-consuming for the debugging workflow you want here. This diagnostic is coming from somewhere in Semantic Analysis, so you just need to take your minimally-reproducing test case and only run the compiler up to that point. To do this in Xcode, since you already have the project in hand, you can do the following:
> - Select the ‘swift’ scheme
> - Pull up the scheme editor (⌘+⇧+<)
> - Select the ‘Arguments’ tab and click the ‘+’
> - (For this particular case) add ‘-frontend -typecheck /Path/To/This/Test/Case.swift’
> - Close the scheme editor
> - Build and run
> ~Robert Widmann
>> To proceed, I built Swift and generated an Xcode project but have no idea how to debug the problem. Is there a way for me to input Swift code into the built Swift compiler via Xcode and debug in Xcode??
>> If not, what is the usual way to debug something like this?
>> Thank you for your time!
>> Mike JS. Choi
>> swift-dev mailing list
>> swift-dev at swift.org
> swift-dev mailing list
> swift-dev at swift.org
-------------- next part --------------
An HTML attachment was scrubbed...
More information about the swift-dev