[fpc-pascal] Weird absence of compilation error

[Gerhard Scholz]

This must be read as follows:

> function Tmp: Double;
> begin
>   Result := 10;  // there is a semicolon (mispelling?) [statement 1]
  + Element;                                            [statement 2]
> end;

So, Result becomes 10.
The next line is a function call without storing the result. The leading '+' 
(plus) is seen as sign; since '+' is neutral, it seems to be ignored by the 
compiler. A '-' (minus) would force some action, so it is absolutely wrong 
at this place.


----- Original Message ----- 
From: "OBones" <obones at free.fr>
To: "FPC-Pascal users discussions" <fpc-pascal at lists.freepascal.org>
Sent: Thursday, March 21, 2013 10:53 AM
Subject: [fpc-pascal] Weird absence of compilation error


> Hello all,
>
> I'm using FPC 2.6.0 and have the following test program :
>
> program test;
>
> function Element: Double;
> begin
>   Result := 4;
> end;
>
> function Tmp: Double;
> begin
>   Result := 10; + Element;
> end;
>
> begin
>   WriteLn(Tmp);
> end.
>
> And quite surprisingly to me, both ppc386 and pccrossx64 compile it 
> successfully in Delphi mode!
> What's even weirder is that if I replace the Plus operator by a Minus 
> operator, then the compilation fails.
> What I was expecting is that the compilation fails in all cases.
> Is there some flag that I failed to specify?
>
> Regards
> OBones
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