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Postings from April 2012
On Fri Apr 20 18:18:24 2012, jkeenan wrote: > On Sat Jul 17 20:02:48 2010, greerga wrote: > > On Mon Jun 05 10:33:42 2000, clintp wrote: > > > This is a bug report for perl from clintp@geeksalad.org, > > > generated with the help of perlbug 1.26 running under perl 5.00503. > > > > > > The warning for "Argument X isn't numeric" is avoided even when > > > automagic increment doesn't happen because the arguments aren't > > > numeric. Observe: > > > > > > > > > #!/usr/bin/perl -w > > > > > > $m="a"; > > > print ++$m; # Prints "b", as expected > > > > > > > > > $m="a,b"; > > > print $m+0; # Prints 0, as expected > > > # throws a warning also as expected > > > > > > > > > $m="a,b"; > > > print ++$m; # Prints 1, as expected > > > # but throws no warning -- suprise?!? > > > > > > I would have expected that since the automagic increment was avoided > > > in the third case that a warning should have been thrown that the > > > argument "a,b" wasn't numeric. > > > > > > If the magic autoincrement happens, the warning should be supressed. > > > If it doesn't, the warning needs to be thrown. > > > > > > This also occurs in 5.6 builds as well. > > > > Still true in Perl 5.14.2: > > ##### > > $ perl -wE '$m="a";say ++$m;' > b > > $ perl -wE '$m="a,b";say $m+0;' > Argument "a,b" isn't numeric in addition (+) at -e line 1. > 0 > > $ perl -wE '$m="a,b";say ++$m;' > 1 > > ##### > > [snip] > > > > > As such, I'm not entirely convinced this patch is a good idea but it > > will at least be a point of discussion for whether to change the > > behavior or not. > > Was there any further consideration of this patch or the problem it > addressed? I don’t actually understand that part of the code, but I’ve added it to my own list of about 20 patches to consider after 5.16. -- Father Chrysostomos --- via perlbug: queue: perl5 status: open https://rt.perl.org:443/rt3/Ticket/Display.html?id=3330Thread Previous