From: Jarkko Hietaniemi <jhi@iki.fi>
Date: Mon, 30 Aug 1999 21:20:50 +0000 (+0000)
Subject: Document the undefinedness of overshifting.
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=b9f7914694d22ad96effe91938bfaeb79e34b8f4;p=p5sagit%2Fp5-mst-13.2.git

Document the undefinedness of overshifting.

p4raw-id: //depot/cfgperl@4055
---

diff --git a/pod/perlop.pod b/pod/perlop.pod
index 14ca6b5..2b5b789 100644
--- a/pod/perlop.pod
+++ b/pod/perlop.pod
@@ -220,11 +220,15 @@ Binary "." concatenates two strings.
 
 Binary "<<" returns the value of its left argument shifted left by the
 number of bits specified by the right argument.  Arguments should be
-integers.  (See also L<Integer Arithmetic>.)
+integers.  (See also L<Integer Arithmetic>.)  Shifting more than the
+width of the available integer in bits (usually 32 or 64) produces
+undefined (machine dependent) results.
 
 Binary ">>" returns the value of its left argument shifted right by
 the number of bits specified by the right argument.  Arguments should
-be integers.  (See also L<Integer Arithmetic>.)
+be integers.  (See also L<Integer Arithmetic>.)  Shifting more than the
+width of the available integer in bits (usually 32 or 64) produces
+undefined (machine dependent) results.
 
 =head2 Named Unary Operators