[Issue 18407] debug should escape nothrow, @nogc, @safe (not just pure)

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18407

--- Comment #1 from Timothee Cour <timothee.cour2 at gmail.com> ---
related forum threads:
* option -ignore_pure for temporary debugging (or how to wrap an unpure
function inside a pure one)?
* Should debug{} allow GC?
* Debug prints in @nogc

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