don't depend on threads to do a watchdog when testing threads

[perl5.git] / lib / CORE.pod

diff --git a/lib/CORE.pod b/lib/CORE.pod
index 1a98f76..ec6a804 100644 (file)
--- a/lib/CORE.pod
+++ b/lib/CORE.pod
@@ -32,10 +32,17 @@ CORE package, but is part of Perl's syntax.
 
 For many Perl functions, the CORE package contains real subroutines.  This
 feature is new in Perl 5.16.  You can take references to these and make
-aliases.  However, they can only be called as barewords; i.e., you cannot
+aliases.  However, some can only be called as barewords; i.e., you cannot
 use ampersand syntax (C<&foo>) or call them through references.  See the
-C<shove> example above.  This works for all overridable keywords, except
-for C<dump>, C<getprotobynumber>, C<not> and the infix operators.
+C<shove> example above.  These subroutines exist for all overridable
+keywords, except for C<dump> and the infix operators.  Calling with
+ampersand syntax and through references does not work for the following
+functions, as they have special syntax that cannot always be translated
+into a simple list (e.g., C<eof> vs C<eof()>):
+
+C<chdir>, C<chomp>, C<chop>, C<each>, C<eof>, C<exec>, C<keys>, C<lstat>,
+C<pop>, C<push>, C<shift>, C<splice>, C<stat>, C<system>, C<truncate>,
+C<unlink>, C<unshift>, C<values>
 
 =head1 OVERRIDING CORE FUNCTIONS