std.uni CodepointSet toString

[Richard (Rikki) Andrew Cattermole]

On 08/02/2024 5:36 AM, Carl Sturtivant wrote:
> On Wednesday, 7 February 2024 at 11:49:20 UTC, Richard (Rikki) Andrew 
> Cattermole wrote:
>>> ```
>>> undefined reference to 
>>> `_D4core9exception__T15__switch_errorTZQsFNaNbNiNeAyamZv'
>>> collect2: error: ld returned 1 exit status
>>> Error: linker exited with status 1
>>> ```
>>
>> Use ``-allinst``, that is a template emission bug.
> 
> !
> Thanks, at least I can continue now, though presumably the cure has its 
> own problems.
> 
> ```
> $ dmd --help | grep allinst
>    -allinst          generate code for all template instantiations
> ```
> Unclear exactly how -allinst does this, given type parameters, and it 
> will affect all of the many templates I use in source with CodepointSet.
> 
> Can you shed any light?

Basically the compiler will by default try to elide templates it thinks 
isn't used.

However it doesn't always get this right, which this flag overrides by 
turning it off.