Integrate changes #8677,8680,8681,8725,8732,8776,8782,9290

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

diff --git a/pod/perldiag.pod b/pod/perldiag.pod
index c6103c4..307f22d 100644 (file)
--- a/pod/perldiag.pod
+++ b/pod/perldiag.pod
@@ -3682,6 +3682,15 @@ L<perlref> for more on this.
 
 (W) You did C<use re;> without any arguments.   That isn't very useful.
 
+=item Useless use of %s with no values
+
+(W syntax) You used the push() or unshift() function with no arguments
+apart from the array, like C<push(@x)> or C<unshift(@foo)>. That won't
+usually have any effect on the array, so is completely useless. It's
+possible in principle that push(@tied_array) could have some effect
+if the array is tied to a class which implements a PUSH method. If so,
+you can write it as C<push(@tied_array,())> to avoid this warning.
+
 =item "use" not allowed in expression
 
 (F) The "use" keyword is recognized and executed at compile time, and
@@ -3901,7 +3910,7 @@ So put in parentheses to say what you really mean.
 
 =item Wide character in %s
 
-(F) Perl met a wide character (>255) when it wasn't expecting one.
+(W utf8) Perl met a wide character (>255) when it wasn't expecting one.
 
 =item write() on closed filehandle %s