doc patch for pack("p",undef) packing a NULL pointer

[p5sagit/p5-mst-13.2.git] / pod / perlfunc.pod

diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod
index 4bf1fda..8f8424b 100644 (file)
--- a/pod/perlfunc.pod
+++ b/pod/perlfunc.pod
@@ -2160,7 +2160,9 @@ string that many nybbles long.  The "p" type packs a pointer to a null-
 terminated string.  You are responsible for ensuring the string is not a
 temporary value (which can potentially get deallocated before you get
 around to using the packed result).  The "P" packs a pointer to a structure
-of the size indicated by the length.  Real numbers (floats and doubles) are
+of the size indicated by the length. A NULL pointer is created if the 
+corresponding value for "p" or "P" is C<undef>.
+Real numbers (floats and doubles) are
 in the native machine format only; due to the multiplicity of floating
 formats around, and the lack of a standard "network" representation, no
 facility for interchange has been made.  This means that packed floating