@safe fun alayws call @system function?
Dsby via Digitalmars-d-learn
digitalmars-d-learn at puremagic.com
Tue Jul 12 03:41:29 PDT 2016
On Tuesday, 12 July 2016 at 09:17:37 UTC, ag0aep6g wrote:
> On 07/12/2016 11:09 AM, Dsby wrote:
>> How can i call @system function in a @safe function?
>
> You can't. You can mark the @safe function @trusted [1]
> instead. @trusted functions are considered memory-safe by the
> compiler and can be called from @safe code, but they can use
> @system features and call @system functions.
>
> A @trusted function must still be memory-safe, and the compiler
> cannot check that it is, so you as the programmer take on the
> responsibility to ensure that the function is in fact
> memory-safe.
>
> Be very careful with @trusted and make sure you know exactly
> what you're doing. A bad @trusted function compromises the
> whole call chain.
>
>
> [1] https://dlang.org/spec/function.html#trusted-functions
Thanks!
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