Error: Incompatible declaration of runtime function `_d_arraybounds`

[kinke]

On Sunday, 23 August 2020 at 13:25:30 UTC, Adam D. Ruppe wrote:
> A little known fact is dmd actually provides index and length 
> for RangeError in e2ir.d, but druntime doesn't do anything with 
> it.
>
> I just tried defining an object.d in ldc with this:
>
> extern(C) void _d_arraybounds(string file, size_t line, size_t 
> lwr, size_t upr, size_t length) {}
>
>
> to take advantage of this data and ldc outright rejected it. I 
> don't really know my way around the ldc source... what can I do 
> about this?

Such hacks don't work with LDC and its strongly typed IR, so we 
don't pass these unused extra args. You can grep the src for 
`_d_arraybounds`, adjusting the signature of this runtime hook 
and the call site in DtoBoundsCheckFailCall(), but will have to 
adapt more code to forward the extra args to the latter function.