[Issue 18106] @nogc: yields a wrong error where @nogc on each definition does not

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18106

--- Comment #4 from Ketmar Dark <ketmar at ketmar.no-ip.org> ---
yes, `struct` (and `class`, i believe) isn't affected. outer @nogc for *struct*
(and class) doesn't change member attrs, only inner @nogc does. this is the
logic compiler applies. ;-)

i'm still not sure if `@nogc` should do the same thing as `@nogc:` or not, tho.
it prolly should, but let's wait for some compiler dev to clarify the things.

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