On Sunday, 24 August 2014 at 09:29:53 UTC, Jacob Carlborg wrote:
On 2014-08-24 10:03, Bienlein wrote:

I have omitted the code for the TestClass class to save space. Problem
is that the compiler outputs this:

Error: @nogc function 'main.nogcNew!(TestClass, ).nogcNew' cannot call
non-@nogc function 'core.exception.onOutOfMemoryError'
Error: @nogc function 'main.nogcNew!(TestClass, ).nogcNew' cannot call
non-@nogc function 'std.conv.emplace!(TestClass, ).emplace'
Error: @nogc function 'main.nogcDel!(TestClass).nogcDel' cannot call
non-@nogc function 'object.destroy!(TestClass).destroy'

Is there a way to get around this?

@nogc is a very new attribute. The runtime and standard library have not been properly annotated with this attribute yet.

As a workaround you could try copy implementation of these functions to you're own code and annotate them as appropriate.

The real issue here is actually the *language*. Exceptions and Errors are GC allocated, so if you try to "check" your no-GC allocation, you'll use the GC...

A possible workaround is to preemptively static allocate the Error. However, this can cause issues if you chain Errors, or re-enter your function while throwing.

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