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authorJarkko Hietaniemi <jhi@iki.fi>2002-04-23 23:41:52 +0000
committerJarkko Hietaniemi <jhi@iki.fi>2002-04-23 23:41:52 +0000
commit6cc60dfb2a8776ed38cabadaa23ec442bec7ba81 (patch)
treee5537b3654a3833261b0a07280d38b3462a36655 /pod
parentd22c057c1333a6b1f36ad68dc480f705854e96d9 (diff)
downloadperl-6cc60dfb2a8776ed38cabadaa23ec442bec7ba81.tar.gz
Go on record about the binary backward incompatibility.
p4raw-id: //depot/perl@16120
Diffstat (limited to 'pod')
-rw-r--r--pod/perldelta.pod15
1 files changed, 15 insertions, 0 deletions
diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index b742b19ea9..02ddf8856a 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -46,6 +46,21 @@ More Extensive Regression Testing
=head1 Incompatible Changes
+=head2 Binary Incompatibility
+
+Perl 5.8 has not been designed to be binary compatible with earlier
+releases of Perl. While the compatibility has not been intentionally
+broken, it has not been intentionally protected, either. The major
+reason for the discontinity is the new IO architecture called PerlIO.
+The PerlIO is the default configuration because without it many new
+features of Perl 5.8 cannot be used. In other words: you just have
+to recompile your modules, sorry about that.
+
+In future releases of Perl non-PerlIO aware XS modules may become
+completely unsupported. This shouldn't be too difficult for module
+authors, however: PerlIO has been designed as a drop-in replacement
+(at the source code level) for the stdio interface.
+
=head2 64-bit platforms and malloc
If your pointers are 64 bits wide, the Perl malloc is no longer being