option -ignore_pure for temporary debugging (or how to wrap an unpure function inside a pure one)?

[Timothee Cour]

same question with how to wrap a gc function inside a nogc shell, if
not, allowing a flag -ignore_nogc that'd enable this (again, for
debugging purposes)

On Wed, Feb 7, 2018 at 7:29 PM, Timothee Cour <thelastmammoth at gmail.com> wrote:
> while hacking into druntime and adding temporary debug information (eg
> with custom logging etc) I had a hard time making things compile
> because lots of functions are pure nothrow safe, resulting in compile
> errors when my custom debugging functions are not pure nothrow safe.
>
>
> How about adding flags ` -ignore_pure` (and perhaps -ignore_safe
> -ignore_nothrow) to allow code to compile ignoring safe, pure, nothrow
> mismatches?
>
> This would be meant for temporary debugging obviously, production code
> would not enable these flags.
>
> my workaround for nothrow and safe attributes is to call via wrapNothrow!fun:
>
> @trusted
> nothrow auto wrapNothrow(alias fun, T...)(T a){
>   import std.exception;
>   try{
>     return fun(a);
>   }
>   catch(Exception t){
>     assert(0, t.msg);
>   }
> }
>
> What would be a workaround to wrap a non-pure function?