Using onOutOfMemoryError in C wrappers

[Basile B.]

On Wednesday, 24 March 2021 at 07:58:22 UTC, Per Nordlöw wrote:
> When wrapping C code that tries to allocate memory resources 
> via functions such as
>
>     X* X_create();
>
> should one call `onOutOfMemoryError();` upon null return?
>
> Making more D wrappers `nothrow @nogc`.


There are several ways to do that. In addition to 
onOutOfMemoryError, you can use a static instance or `if (somePtr 
is null) assert(0);`

   void v() @nogc nothrow
   {
     __gshared oom = new OutOfMemoryError();
     auto X* = X_create();
     if (X is null)
         throw oom;
   }