Hey everyone,

Following is the p5p (Perl 5 Porters) mailing list summary for the past week.

Enjoy!

Edit: Tony's suggestion was to change the new behavior to warning if it breaks CPAN.

August 7th-14th

News and Updates

Zefram added a new API function: cv_get_call_checker_flags().

Karl Williamson started collected all the functions in core that are unsafe in multi-threaded applications.

Karl is also looking at cleaning up incorrect definitions of I32 U32 in embed.fnc.

Grant Reports

• Tony Cook TPF Grant 9 report 7.
• Tony Cook TPF Grant 9 report 8.
• Tony Cook TPF Grant 9 report 9.
• Tony Cook TPF Grant 9 report 10.
• Dave Mitchell TPF Grant 2 June 2017 report.

Issues

New Issues

• Perl #131851: Blead breaks Text::Diff 1.44.
• Perl #131852: Blead breaks Sereal::Encoder 3.015.
• Perl #131859: bad core sub usage yields op assertion.
• Perl #131867: %{^CAPTURE_ALL} is %+, not %-.
• Perl #131868: Quantifiers in (?(DEFINE)...).
• Perl #131875: please correct perlfunc to tell when sprintf @... is useful.
• Perl #131883: inconsistent sub name in "Illegal character in prototype" warning.
• Perl #131885: arybase doesn't handle kvaslice.
• Perl #131892: runtime error: null pointer passed as argument 2, which is declared to never be null.
• Perl #131893: runtime error: signed integer overflow.
• Perl #131894: runtime error: shift exponent -2 is negative.
• Perl #131895: stat() doesn't fail on filenames containing \0/NUL.

Resolved Issues

• Perl #124368: Perl_sv_2pv_flags: Assertion failure.
• Perl #131646: utf8.c: Assertion failure.
• Perl #131735: NetBSD 7.1 Smoke Test Failures.
• Perl #131786: Linker error with pp.o if -mieee-fp is in CFLAGS, "multiple definition of _LIB_VERSION".
• Perl #131809: Configure script doesn't recognize GCC 6 or 7.
• Perl #131851: Blead breaks Text::Diff 1.44.

Suggested Patches

Tony Cook provided a patch for Perl #131836 (use-after-free in Perl_yylex).

Tony also provided a patch for Perl #131746 (runtime error: null pointer passed as argument 1, which is declared to never be null).

Another patch by Tony to Perl #131893 (runtime error: signed integer overflow).

Tony also provided a patch for Perl #131894 (runtime error: shift exponent -2 is negative).

Discussion

Following Perl #131725 (number parsing), Tony Cook suggested changing the new behavior to a warning if the change breaks CPAN.

Zefram is discussing the my_strerror() function and $!.

Abigail continues investigating the behavior of @{^CAPTURE} and now with (?(DEFINE)).

Herbert Breunung started discussing ideas for changes in perldoc.