Re: [fpc-devel] Case else allows multiple statements
Thanks, I've added a minor doc bug for it.
https://bugs.freepascal.org/view.php?id=36090
On 9/19/19 8:40 PM, Alexander Grotewohl wrote:
I'm assuming that's what the 'statementlist' means in the
documentation (rather than just 'statement')
On 9/19/2019 3:33 PM, Sven Barth via fpc-devel wrote:
Am 19.09.2019 um 21:07 schrieb Kirinn:
I've stumbled on a situation where a case statement compiles when I
wouldn't expect it to. I would expect the below code to produce a
compile error:
program test;
var i : byte = 5;
begin
case i of
0..4: writeln('value is ', i);
else writeln('Else!');
i := 3;
writeln(i);
end;
end.
This compiles without errors or warnings on FPC 3.0.4 and produces
the output:
Else!
3
None of the documentation I've looked at suggests that a case-else
is implicitly a block. All examples in the documentation show only a
single statement in any else clause, or an explicit begin-end block.
Is this expected behavior? If yes, the reference guide (13.2.2)
would benefit from mentioning this.
That is indeed by design (at least Delphi compiles it as well). You
can file a bug report against the documentation so that it isn't
forgotten.
Regards,
Sven
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Re: [fpc-devel] Case else allows multiple statements
I'm assuming that's what the 'statementlist' means in the documentation
(rather than just 'statement')
On 9/19/2019 3:33 PM, Sven Barth via fpc-devel wrote:
Am 19.09.2019 um 21:07 schrieb Kirinn:
I've stumbled on a situation where a case statement compiles when I
wouldn't expect it to. I would expect the below code to produce a
compile error:
program test;
var i : byte = 5;
begin
case i of
0..4: writeln('value is ', i);
else writeln('Else!');
i := 3;
writeln(i);
end;
end.
This compiles without errors or warnings on FPC 3.0.4 and produces
the output:
Else!
3
None of the documentation I've looked at suggests that a case-else is
implicitly a block. All examples in the documentation show only a
single statement in any else clause, or an explicit begin-end block.
Is this expected behavior? If yes, the reference guide (13.2.2) would
benefit from mentioning this.
That is indeed by design (at least Delphi compiles it as well). You
can file a bug report against the documentation so that it isn't
forgotten.
Regards,
Sven
___
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fpc-devel maillist - fpc-devel@lists.freepascal.org
https://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-devel
Re: [fpc-devel] Case else allows multiple statements
Am 19.09.2019 um 21:07 schrieb Kirinn:
I've stumbled on a situation where a case statement compiles when I
wouldn't expect it to. I would expect the below code to produce a
compile error:
program test;
var i : byte = 5;
begin
case i of
0..4: writeln('value is ', i);
else writeln('Else!');
i := 3;
writeln(i);
end;
end.
This compiles without errors or warnings on FPC 3.0.4 and produces the
output:
Else!
3
None of the documentation I've looked at suggests that a case-else is
implicitly a block. All examples in the documentation show only a
single statement in any else clause, or an explicit begin-end block.
Is this expected behavior? If yes, the reference guide (13.2.2) would
benefit from mentioning this.
That is indeed by design (at least Delphi compiles it as well). You can
file a bug report against the documentation so that it isn't forgotten.
Regards,
Sven
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