Delphi Tokyo:

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Delphi Tokyo:


var
a: array of Integer;
b: array of Integer;
begin
a := pointer(b);
end.

I'm getting E2010 Incompatible types: 'Dynamic array' and 'Pointer'.

Any idea ?

Comments

  1. Stefan GlienkeMarch 23, 2017 at 9:59 AM

    As designed - they disabled assigning untyped pointer to a dynamic array because the operation you are doing there is actually unsafe. Use TArray.

    And when I saw they fixed that I thought by myself: "who the heck would ever do that..." I guess there always is (or was) a crazy developer out there that did that - should have known better by now. ;)

    ReplyDelete
  2. Stéphane WierzbickiMarch 23, 2017 at 10:03 AM

    Thank you Stefan Glienke​, will adapt this code (3rd party)

    ReplyDelete
  3. David HeffernanMarch 23, 2017 at 10:26 AM

    Raise a glass to Emba for this one.

    ReplyDelete
  4. Thomas Mueller (dummzeuch)March 23, 2017 at 10:50 AM

    Is it still possible to assign nil?

    ReplyDelete
  5. A. BouchezMarch 23, 2017 at 12:14 PM

    Sounds as expected to me. I don't know what assigning a pointer to a dynamic array is suppose to do - unless it is the nil constant.

    ReplyDelete
  6. Ralf StockerMarch 23, 2017 at 12:58 PM

    Compiler change? docwiki.embarcadero.com - What's New - RAD Studio

    ReplyDelete
  7. Marco CantùMarch 23, 2017 at 2:34 PM

    As Stefan mentioned. If you want, you can still use a hard cast and convert like it was done before, but clearly not recommended.

    ReplyDelete
  8. A. BouchezMarch 24, 2017 at 2:28 AM

    Marco Cantù Yes, because such hard cast is messing with the reference counts, IIRC.

    ReplyDelete

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