[fpc-pascal] Weird absence of compilation error

[OBones]

Gerhard Scholz wrote:
> 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.
Yes, that's what happens and, yes it's a misspelling by one of our end 
users. Basically we use FPC as one of the engines for the scripting part 
of one of our applications.

> 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.
Thanks for the explanation on the behavior.

> ----- 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
>> _______________________________________________
>> fpc-pascal maillist  -  fpc-pascal at lists.freepascal.org
>> http://lists.freepascal.org/mailman/listinfo/fpc-pascal 
>
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