Clarify limitation in safe signals.
authorLeon Timmermans <fawaka@gmail.com>
Mon, 17 Jan 2011 16:59:33 +0000 (17:59 +0100)
committerFather Chrysostomos <sprout@cpan.org>
Tue, 18 Jan 2011 06:31:27 +0000 (22:31 -0800)
ext/POSIX/lib/POSIX.pod

index 64852e9..9df0cde 100644 (file)
@@ -1196,6 +1196,10 @@ Synopsis:
 
 Returns C<undef> on failure.
 
+Note that you can't reliably block or unblock a signal from its own signal
+handler if you're using safe signals. Other signals can be blocked or unblocked
+reliably.
+
 =item sigsetjmp
 
 C<sigsetjmp()> is C-specific: use C<eval {}> instead,