Maintaining the Perl 5 Core: Report for Month 33

No Comments

Dave Mitchell writes:

I didn't really do much that stands this month; I just reduced the backlog in my p5p mailbox a bit, and worked on several miscellaneous tickets.

The most noteworthy bugfix related to [email protected] getting overwritten while exiting an eval scope. Earlier work by Zefram had ensured that [email protected] is assigned to in a late stage of scope unwinding, but it turns out that in void context or after a die, the temps stack was still being freed after [email protected] had been assigned to, which could result in destructors being called that could overwrite [email protected] (My work last year on the context stack meant that this had already been fixed for scalar and list context evals). For example:

sub DESTROY { [email protected] = "spurious\n" }
eval  { die ((bless []) ?  "foo" : "bar") };
print [email protected]; # prints "spurious" rather than "foo"

I did some refactoring of the eval code and then provided a fix, but this broke a Variable::Magic test and has been temporarily reverted.


11:59 "Confused by eval behavior" thread
0:28 [perl #124216] Perl_sv_clear: Assertion
1:57 [perl #127759] die inside sort comparitor causes SV error
1:23 [perl #127774] segfault in caller()
2:54 [perl #127834] @INC issues
0:50 [perl #127875] Blead breaks Scope::Upper
0:29 [perl #128189] Assert fail in sv.c
0:22 [perl #128238] Assert fail in gv.c
0:41 [perl #128252] Assert fail in op.c sub{\@00=0}
3:26 [perl #128254] Taint-mode assert fail in Perl_magic_clearisa
0:45 [perl #128307] Bleadperl v5.25.0-40-ga52f2cc breaks GAAS/perl-lisp-0.06.tar.gz
2:21 fix Coro to run under 5.24.0
1:00 fix Time::HiRes utime.t test hanging
1:39 fix build warnings and smoke failures
12:44 process p5p mailbox
0:58 reformat perl -V output
3:37 sort out (mini)perlmain.c generation

47:33 Total (HH::MM)

As of 2016/06/30: since the beginning of the grant:

141.6 weeks
1968.0 total hours
13.9 average hours per week

There are 32 hours left on the grant.

Leave a comment

About TPF

The Perl Foundation - supporting the Perl community since 2000. Find out more at

About this Entry

This page contains a single entry by Karen Pauley published on August 1, 2016 9:55 AM.

Grant Report : RPerl User Documentation #2 - June 2016 was the previous entry in this blog.

Maintaining Perl 5: Grant Report for June 2016 is the next entry in this blog.

Find recent content on the main index or look in the archives to find all content.


OpenID accepted here Learn more about OpenID
Powered by Movable Type 6.2.2