October 27th - November 1st
Updates
Perl 5.22.1-RC1 is now [1]available. Thanks to Steve Hay for the work!
In the deepest rocky crevice A will-o'-the wisp lured me; How I could
find my way from here, For me it's easy memory!
For I am used to straying ways, Every path to th'end a way, All our
joys
and all our suffering,-- To a will-o'-the wisp it 's all play!
Through the dried-up bed of torrents I quite calmly downward stroll;
Every stream its sea will enter, Every suffering finds its goal!
-- Wilhelm Müller, trans. Anon., "Will-o'-the Wisp" (No. 9 in
Schubert's
song-cycle, "Winterreise")
More agreement with Karl Williamson's suggestion to include fixes to
\s{wb} and \s{sb} in perl 5.22.1, but due to performance hit concerns
raised by Yves Orton, it was left out of 5.22.1.
Bulk88 offered an updated patch for Win32 parallel builds in [2]Perl
#126452, which was merged.
Jarkko Hietaniemi resolved a few older IRIX compilation tickets
(mentioned
below).
Tony Cook provided a solution for some Coverity issues (mentioned last
week) Jarkko has been working through.
Dave Mitchell has another [3]grant report for us. Dave continued working
on the context stack, but also took a break to see about optimizing some
arithmetic operations, making the nbody benchmarks (focusing heavily on
floating point vector arithmetic) about a third faster. Great news!
Bulk88
provided several improvement points to the code which Dave had created
another branch for.
Matthew Horsfall suggests the problem in [4]Perl #126070 is likely to be
with [5]TryCatch.
Aaron Crane provides insight in [6]Perl #126170 on BEGIN blocks with
subroutine attributes.
Bugs
Reported bugs
[7]Perl #126480, reported by Dan Collins, shows an assertion failure with
the code:
pipe$$5,0
[8]Perl #126482, reported by Dan, shows another assertion failure
with the
code:
sub(){sub ub(){0}ub ub
[9]Perl #126481, reported by Dan, is one more assertion failure with the
code:
0=/(?[!!(\w])/
Which had been fixed the next day by Karl Williamson.
[10]Perl #126469, reported by Ben Bullock, asks to document the second
argument of sv_reftype. Patches by Tony Cook added.
[11]Perl #126474, reported by Kazuho Oku, mentions that unsafe signal
handlers use newSVsv, thus calling malloc. He opened the bug since perl
5.17 introduces this call at all times, which wasn't the case prior.
[12]Perl #126484, reported by Andreas J. Koening, mentions that perl
5.23.3 breaks [13]Lexical::SealRequireHints.
[14]Perl #126472, also reported by Andreas, shows a problem in 5.23.3
breaking additional modules which run very explicit checks for a behavior
which does not break the module, but the specific test. Dave Mitchell
advised updating the test.
[15]Perl #126502, reported by masterchiefaragorn, shows that once you
freeze and thaw floating point numbers using [16]Storable they will no
longer be equal using ==. Zefram explains in the ticket why this happens.
[17]Perl #126515, reported by John Imrie, regarding the missing Unicode
character Block=CJK_Unified_Ideograph. This was the wrong name and it
only
came up as an error now since Karl Williamson added a compile-time check
for for valid Unicode properties.
Resolved bugs
* [18]Perl #125298: warnings.t one failure in IRIX 6.5.
* [19]Perl #126453: Don't distribute version::vpp/EUMM::version::vpp.
* [20]Perl #116062: Installing perl 5.16.2 in SGI IRIX 6.2.
* [21]Perl #39797: Unable to build Perl under IRIX with -Duseshrplib.
* [22]Perl #125314: Configuring with Accflags DAPPLLIB_EXP broke in
5.22.0.
* [23]Perl #126468: (Duplicate of [Perl #125314].)
* [24]Perl #126309: x operator on list causes segfault, confuses
valgrind (64-bit).
* [25]Perl #126481: Assert fail with 0=/(?[!!(\w])/
* [26]Perl #124212: porting/extrefs.t fails in tru64.
Discussion
More conversation happening in [27]Perl #126414 about number rounding in
perl (mentioned last week). Tony Cook suggests using EOVERFLOW (as both
Solaris and FreeBSD do) and to warn if the value of inodes changes
because
of rounding. Aristotle Pagaltzis supports stringifying and Bulk88
notes it
might be the only way to handle 128 bit inodes.
Ricardo Signes [28]suggests opening a meta ticket in order to track all
the fuzzer-related bugs. Dan Collins wants a way to triage the
tickets and
have multiple users be able to edit them, even if only a spreadsheet.
Paul "LeoNerd" Evans [29]wonders if it's possible to warn about POD
in the
middle of an expression. Unfortunately, as shown by Eric Brine and
H.Merijn "Tux" Brand, it's a problematic idea, partly because of
functions
and partly because of indirect notation support.
The discussion on optimizing read (mentioned last week) in [30]Perl
#126403 is continuing. Craig A. Berry wonders whether the suggested
solutions really speed things up. Apparently on GNU/Linux and Macs (or
more accurately, non-Windows) it does. Craig will try to provide a clean
patch, but no promises on when.
Bulk88 is continuing work on cleaning up dependencies on having
DynaLoader
available for miniperl. He [31]wrote about his plan, then [32]wrote more
verbosely on his journey down the rabbit-hole. [33]Perl #126533 and
[34]Perl #126534 are the result of his work, provided as patches.
Karl Williamson [35]continues his research and possible solution
suggestions on handling Unicode characters beyond 72-bits (past 0xFF).
References
1. http://www.nntp.perl.org/group/perl.perl5.porters/232321
2. https://rt.perl.org/Ticket/Display.html?id=126452
3. http://www.nntp.perl.org/group/perl.perl5.porters/232244
4. https://rt.perl.org/Ticket/Display.html?id=126070
5. https://metacpan.org/pod/TryCatch
6. https://rt.perl.org/Ticket/Display.html?id=126170
7. https://rt.perl.org/Ticket/Display.html?id=126480
8. https://rt.perl.org/Ticket/Display.html?id=126482
9. https://rt.perl.org/Ticket/Display.html?id=126481
10. https://rt.perl.org/Ticket/Display.html?id=126469
11. https://rt.perl.org/Ticket/Display.html?id=126474
12. https://rt.perl.org/Ticket/Display.html?id=126484
13. https://metacpan.org/pod/Lexical/SealRequireHints
14. https://rt.perl.org/Ticket/Display.html?id=126472
15. https://rt.perl.org/Ticket/Display.html?id=126502
16. https://metacpan.org/pod/Storable
17. https://rt.perl.org/Ticket/Display.html?id=126515
18. https://rt.perl.org/Ticket/Display.html?id=125298
19. https://rt.perl.org/Ticket/Display.html?id=126453
20. https://rt.perl.org/Ticket/Display.html?id=116062
21. https://rt.perl.org/Ticket/Display.html?id=39797
22. https://rt.perl.org/Ticket/Display.html?id=125314
23. https://rt.perl.org/Ticket/Display.html?id=126468
24. https://rt.perl.org/Ticket/Display.html?id=126309
25. https://rt.perl.org/Ticket/Display.html?id=126481
26. https://rt.perl.org/Ticket/Display.html?id=124212
27. https://rt.perl.org/Ticket/Display.html?id=126414
28. http://www.nntp.perl.org/group/perl.perl5.porters/232223
29. http://www.nntp.perl.org/group/perl.perl5.porters/232245
30. https://rt.perl.org/Ticket/Display.html?id=126403
31. http://www.nntp.perl.org/group/perl.perl5.porters/232207
32. http://www.nntp.perl.org/group/perl.perl5.porters/232296
33. https://rt.perl.org/Ticket/Display.html?id=126533
34. https://rt.perl.org/Ticket/Display.html?id=126534
35. http://www.nntp.perl.org/group/perl.perl5.porters/232262
