diff options
Diffstat (limited to 'pod/perldelta.pod')
| -rw-r--r-- | pod/perldelta.pod | 65 |
1 files changed, 48 insertions, 17 deletions
diff --git a/pod/perldelta.pod b/pod/perldelta.pod index 8f04217aa1..52ffc244e1 100644 --- a/pod/perldelta.pod +++ b/pod/perldelta.pod @@ -544,6 +544,11 @@ errors so consider starting laundering now. =item * +Tied hash interfaces are now required to have the EXISTS and DELETE +methods (either own or inherited). + +=item * + If tr/// is just counting characters, it doesn't attempt to modify its target. @@ -1735,10 +1740,6 @@ long doubles support in AIX should be better now. See L<perlaix>. =item * -After a long pause, AmigaOS has been verified to be happy with Perl. - -=item * - AtheOS ( http://www.atheos.cx/ ) is a new platform. =item * @@ -1932,6 +1933,40 @@ Fixed numerous memory leaks, especially in eval "". =item * +Localised tied variables no more leak memory + + use Tie::Hash; + tie my %tied_hash => 'Tie::StdHash'; + + ... + + # Used to leak memory every time local() was called, + # in a loop this added up. + local($tied_hash{Foo}) = 1; + +=item * + +Localised hash elements (and %ENV) are correctly unlocalised to not to +exist, if that's what they were. + + + use Tie::Hash; + tie my %tied_hash => 'Tie::StdHash'; + + ... + + # Nothing has set the FOO element so far + + { local $tied_hash{FOO} = 'Bar' } + + # Here the FOO element would have been C<undef>, + # but no more so. + +As a side effect of this fix, tied hash interfaces B<must> define +the EXISTS and DELETE methods. + +=item * + mkdir() now ignores trailing slashes in the directory name, as mandated by POSIX. @@ -2705,6 +2740,14 @@ This is caused by the characters \xFF (y with diaeresis) and \xBE (Y with diaeresis) not behaving correctly when being matched case-insensitively. +=head2 Modifying $_ Inside for(..) + + for (1..5) { $_++ } + +works without complaint. It shouldn't. (You should be able to +modify only lvalue elements inside the loops.) You can see the +correct behaviour by replacing the 1..5 with 1, 2, 3, 4, 5. + =head2 mod_perl 1.26 Doesn't Build With Threaded Perl Use mod_perl 1.27 or higher. @@ -2713,7 +2756,7 @@ Use mod_perl 1.27 or higher. Don't panic. Read INSTALL 'make test' section instead. -=head2 HP-UX lib/posix Subtest 9 Fails When LP64-Configured +=head2 HP-UX lib/posix Subtest 9 Fails When LP64-Configured If perl is configured with -Duse64bitall, the successful result of the subtest 10 of lib/posix may arrive before the successful result of the @@ -2850,18 +2893,6 @@ some output may appear twice. Use XML::Parser 2.31 or later. -=head2 Localising a Tied Variable Leaks Memory - - use Tie::Hash; - tie my %tie_hash => 'Tie::StdHash'; - - ... - - local($tie_hash{Foo}) = 1; # leaks - -Code like the above is known to leak memory every time the local() -is executed. - =head2 z/OS (OS/390) z/OS has rather many test failures but the situation is actually |