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author | Father Chrysostomos <sprout@cpan.org> | 2011-12-15 16:26:16 -0800 |
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committer | Father Chrysostomos <sprout@cpan.org> | 2011-12-15 16:26:16 -0800 |
commit | 7d69d4a61be1619f90910462eac42234c874712e (patch) | |
tree | 6c7be0f836c3bb4cd3b20c091c4362a22e8c02fd /embed.fnc | |
parent | b22bbcf0786b5b4b9edfde241ba29141bb99f219 (diff) | |
download | perl-7d69d4a61be1619f90910462eac42234c874712e.tar.gz |
Disable $[ under 5.16
This adds the array_base feature to feature.pm
Perl_feature_is_enabled has been modified to use PL_curcop, rather
than PL_hintgv, so it can work with run-time hints as well.
(PL_curcop holds the current state op at run time, and &PL_compiling
at compile time, so it works for both.) The hints in $^H are not
stored in the same place at compile time and run time, so the FEATURE_IS_ENABLED macro has been modified to check first whether
PL_curop == &PL_compiling.
Since array_base is on by default with no hint for it in %^H, it is
a ‘negative’ feature, whose entry in %^H turns it off. feature.pm
has been modified to support such negative features. The new FEATURE_IS_ENABLED_d can check whether such default features
are enabled.
This does make things less efficient, as every version declaration
now loads feature.pm to disable all features (including turning off
array_base, which entails adding an entry to %^H) before loading the
new bundle. I have plans to make this more efficient.
Diffstat (limited to 'embed.fnc')
-rw-r--r-- | embed.fnc | 3 |
1 files changed, 2 insertions, 1 deletions
@@ -2572,6 +2572,7 @@ Anop |void |clone_params_del|NN CLONE_PARAMS *param op |void |populate_isa |NN const char *name|STRLEN len|... : Used in keywords.c and toke.c -op |bool |feature_is_enabled|NN const char *const name|STRLEN namelen +Xop |bool |feature_is_enabled|NN const char *const name \ + |STRLEN namelen|bool negate : ex: set ts=8 sts=4 sw=4 noet: |