[fpc-devel] Scalar value is accepted as an argument for an openarray parameter
pascaldragon at googlemail.com
Sun Jun 10 18:23:33 CEST 2012
On 10.06.2012 00:22, Skybuck Flying wrote:
> -----Original Message----- From: Marc Weustink
> Sent: Friday, June 08, 2012 9:08
> To: FPC developers' list
> Subject: Re: [fpc-devel] Scalar value is accepted as an argument for an
> openarray parameter
> On 8-6-2012 8:18, Alexander Klenin wrote:
>> The following code compiles both with :
>> procedure F(const A: array of ShortInt); begin end;
>> begin F(1); end.
>> I think this is a bug in FPC, but if not -- it should be documented here:
>> I am willing to file an issue one way or another.
> Unfortunately Delphi (6) accepts this too. It took me some time at work
> Delphi XE2 does not ;)
Delphi XE does not accept constants either, but scalar variables. So the
=== source begin ===
procedure Test(aArgs: array of LongInt);
for i in aArgs do
z := 42;
=== source end ===
The Delphi help also mentions this here:
=== qoute begin ===
Instead of an array, you can pass a variable of the open array
parameter's base type. It will be treated as an array of length 1.
=== qoute end ===
Constant values and untyped constants can indeed not be used as argument
for open array parameters, but typed constants can.
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