DMD 1.039 and 2.023 releases
Jason House
jason.james.house at gmail.com
Wed Jan 7 16:04:50 PST 2009
Walter Bright Wrote:
> redsea wrote:
> > I'm happy to see Bugzilla 2518(scope(success) not execuate and RAII
> > variable destructor is not called) has been fixed, Great !
> >
> > I have some questions when I check dstress suite and Bugzilla.
> >
> > In Bugzilla 99, according to test case:
> >
> > int main(){ int i; label: { scope(exit) i++; i=3; }
> >
> > if(i != 4){ assert(0); }
> >
> > return 0; }
> >
> > You said:
> >
> > The test case behaves as expected, because labels do not introduce a
> > new scope when followed by { }.
> >
> >
> > Then I check the online manual, and found:
> >
> > labels, scope(), pragma, condition compile(version/debug/static if)
> > would be followed by NonScopeStatement.
> >
> > It is easy to understand scope/condition compile followed by a
> > NonScopeStatement, but what is the meaning of "Labeled Statements"
> > + NonScopeStatement ?
>
> A NonScopeStatement is a statement that, even if it has { }, does not
> introduce a new scope.
I don't think this answers their question. What curly braces mean after a label is clearly a design decision that you made when writing D. It seems that the choice is the opposite of what people expect. Can you explain why it should be NonScope?
> >
> > If I understand the rule I would make least mistakes, so can you do
> > some explain for me ? Thanks.
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