Not a good week to stop smoking ! Test-wise, that is. In this week's summary, read about configuration changes, language proposals, and the usual amount of bug fixes.
Marc Lehmann remarks that the current maintperl may produce error messages
that contain a null character (bug #21962), with the one-liner
./perl -e '&{""}'
Abhijit Menon-Sen finds out that perl, trying to access a symbol that has an empty name, sets explicitly the length of this name to 1, which seems obviously wrong, and thus fixes the bug by suppressing this behaviour.
http://xrl.us/gll
There was a long thread, mainly involving Jarkko and Merijn -- the Configure guys -- about Configure's support for long doubles. A patch for long double support on Solaris (by Alan Burlison) was integrated. An important question was raised, which was : if we ask Configure to enable long double support in perl, (or, similarly, 64 bit integers), and if Configure fails to detect support for it on the platform, should it abort ? The answer, for now, is yes. As a consequence, some holes appear in the smoke matrices, corresponding to now-disallowed configs.
http://xrl.us/gln
The patch that Dave Mitchell sent last week, to allow nested FETCHes, has
been applied. The benchmarks give varying results, which apparently are
due, as Dave says, to the usual cache noise effects, which have been
encountered before. So this patch probably doesn't change significantly
the (already low) performance of ties.
Speaking about ties, Storable now handles self-tied objects (bug
#17040, fixed), thanks to Abhijit. The question of serializing tied
objects is raised again ; David Nicol proposes the convention to use
SERIALIZE and DESERIALIZE special methods. Slaven Rezic points out that
Storable uses already the STORABLE_thaw and STORABLE_freeze methods, if
they're available.
http://xrl.us/glo
Redvers Davies posted refactored patches to add support for
cross-compilation to perl. Jarkko is considering merging them into perl
5.8.1. Vadim Konovalov reminds us about the Cross.pm module, created
during the cross-compilation process for WinCE, which is basically a
substitution for Config.pm when cross-compiling (either perl itself, or
perl modules).
http://xrl.us/glp
Nicholas Clark is struggling with strange smoke failures on BSD. Unreproducibly, for some reasons, Makefile.PL expansion is going wrong under crontab.
http://xrl.us/glq
Nathan Torkington notices that reading from a magic scalar with
PerlIO::scalar sometimes causes coredumps. This buglet is fixed by
Enache Adrian.
Jarkko Hietaniemi finished to add a new function PerlIO::get_layers(), to retrieve the I/O layers for a given filehandle. Dan Kogai is excited about it.
Bug #21979 demonstrates that, with an ithread-enabled perl, modifying an alias to a read-only item of an argument list of a subroutine works, while it's expected to fail.
Arthur Bergman and Dave Mitchell are struggling with pads, ithreads, cloning, and closures, and finally fix an obscure bug I don't understand.
Shlomi Fish posted a proposal to add three new keywords, class, up
and this, to manipulate namespaces. He didn't get positive feedback.
This summary was brought to you once again by Rafael Garcia-Suarez. Weekly summaries are available on http://use.perl.org/ and via a mailing list, which subscription address is perl5-summary-subscribe@perl.org . Feedback welcome.
That brightened my day.