Hm. That often means the project is set to compile with optimizations on, but it sounds like that's not the case?

Comment by Marc Knaup (JIRA)

@belkadan yep, the build using Debug configuration and both, the app target and the framework, use -Onone.

Comment by Marc Knaup (JIRA)

@belkadan I've just found a simple repro: it happens in all methods of structs which have no stored properties.

Oh, that makes a lot of sense. We of course don't bother representing such a struct with any memory at run time, but that makes LLDB think there's no self at all.

Tagging in jingham@apple.com (JIRA User).

@swift-ci create

marc (JIRA User) I seem to be experiencing this issue in Xcode 9.3. I'm getting a slightly different error though:

Couldn't apply expression side effects : couldn't get the data for variable self

I'm using a static struct with all static functions and a single static let property.

Comment by Michael Helmbrecht (JIRA)

Getting the same error as @allenhumphreys; using an empty enum with all static methods in Xcode 9.3.

Comment by Worth Baker (JIRA)

Also getting this error on Xcode 9.3 when attempting lldb operations (po) on a struct with no properties and only static methods: "Couldn't apply expression side effects : couldn't get the data for variable self". Swapping the item from struct to class seems to fix the issue.

Getting the same error (couldn't get the data for variable self) in Xcode 9.4, when trying to print out a variable in static method in a non-empty struct (has let properties).