X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/475342a6d5f74335e2bdfa64bd71f39289320205..ee072b34d54bea306ea81fa30b765c7ffd895f9a:/pod/perldelta.pod

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index aad3ce3..260d62a 100644
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -37,11 +37,15 @@ specified via MakeMaker:
 This new build option provides a set of macros for all API functions
 such that an implicit interpreter/thread context argument is passed to
 every API function.  As a result of this, something like C<sv_setsv(foo,bar)>
-amounts to a macro invocation that actually translates to
+amounts to a macro invocation that actually translates to something like
 C<Perl_sv_setsv(my_perl,foo,bar)>.  While this is generally expected
 to not have any significant source compatibility issues, the difference
 between a macro and a real function call will need to be considered.
 
+This means that there B<is> a source compatibility issue as a result of
+this if your extensions attempt to use pointers to any of the Perl API
+functions.
+
 Note that the above issue is not relevant to the default build of
 Perl, whose interfaces continue to match those of prior versions
 (but subject to the other options described here).
@@ -50,6 +54,9 @@ For testing purposes, the 5.005_58 release automatically enables
 PERL_IMPLICIT_CONTEXT whenever Perl is built with -Dusethreads or
 -Dusemultiplicity.
 
+See L<perlguts/"The Perl API"> for detailed information on the
+ramifications of building Perl using this option.
+
 =item C<PERL_POLLUTE_MALLOC>
 
 Enabling Perl's malloc in release 5.005 and earlier caused