[Issue 21390] Cannot declare extern (storage class) variable of type with disabled default construction

Feb 28, 2022

https://issues.dlang.org/show_bug.cgi?id=21390 --- Comment #1 from Dlang Bot <dlang-bot@dlang.rocks> --- @thewilsonator created dlang/dmd pull request #13733 "Add test case for Issue 21390" mentioning this issue: - Add test case for Issue 21390 https://github.com/dlang/dmd/pull/13733 --

February 28, 2022

[Issue 21390] Cannot declare extern (storage class) variable of type with disabled default construction

Posted by Nicholas Wilson

Permalink

Nicholas Wilson

Permalink

https://issues.dlang.org/show_bug.cgi?id=21390

Nicholas Wilson <iamthewilsonator@hotmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
                 CC|                            |iamthewilsonator@hotmail.co
                   |                            |m
         Resolution|---                         |WORKSFORME

--- Comment #2 from Nicholas Wilson <iamthewilsonator@hotmail.com> ---
struct S { @disable this(); }
// Does not compile: "default construction is disabled for type `S`"
extern __gshared S gVariable1;

Works Yields

Up to      2.063  : Failure with output: onlineapp.d(4): Error: variable
onlineapp.gVariable1 initializer required for type S
2.064   to 2.078.1: Failure with output: onlineapp.d(4): Error: variable
onlineapp.gVariable1 default construction is disabled for type S
2.079.1 to 2.095.1: Failure with output: onlineapp.d(4): Error: variable
`onlineapp.gVariable1` default construction is disabled for type `S`
Since      2.096.1: Success and no output

I'm presuming that

// Does not compile: "extern symbols cannot have initializers" extern __gshared S gVariable2 = S.init;

was an attempted workaround, as that will probably be a WONTFIX. That leaves this as WORKSFORME

--

https://issues.dlang.org/show_bug.cgi?id=21390 --- Comment #3 from Dlang Bot <dlang-bot@dlang.rocks> --- dlang/dmd pull request #13733 "Add test case for Issue 21390" was merged into master: - 971c532be017a0826a9440923c2457b71b4cf8c6 by Nicholas Wilson: Add test case for Issue 21390 https://github.com/dlang/dmd/pull/13733 --

Forums