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0 points

D has many memory safety features. For local variables, one should use pointers, otherwise ref does references that are guaranteed to be valid to their lifetime, and thus have said limitations.

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5 points

For local variables, one should use pointers, otherwise ref does references that are guaranteed to be valid to their lifetime, and thus have said limitations.

Should I take this to mean that pointers instead are not guaranteed to be valid, and thus are not memory safe?

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1 point

Pointers are not guaranteed to be safe. DIP1000 was supposed to solve the issue of a pointer referencing to a now expired variable (see example below), but it’s being replaced by something else instead.

int* p;
{
  int q = 42;
  p = &q;
}
writeln(*p);     //ERROR: This will cause memory leakage, due to q no longer existing
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3 points

Pointers are not guaranteed to be safe

So I guess they are forbidden in @safe mode?

but it’s being replaced by something else instead

Do you know what is the replacement? I tried looking up DIP1000 but it only says “superceded” without mentioning by what.

This makes me wonder how ready D is for someone that wants to extensively use @safe though.

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