[Issue 14251] synchronized (mtx) doesn't check attributes (pure, const)

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=14251

--- Comment #18 from Martin Nowak <code at dawg.eu> ---
(In reply to Andrei Alexandrescu from comment #13)
> Can someone produce an example in which invariants promised by D's system
> are broken?

Just look at core.sync, none of the methods can be implemented const or pure,
still they get called from const/pure code.
In fact Object.Monitor simply declares that lock/unlock doesn't need to have
any attributes
https://github.com/dlang/druntime/blob/e9c7878928330aa34e6ba5c5863ed5507e02248e/src/object.d#L97-L101,
but synchronized forges guarantees that aren't there.

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