EXPECT
Useless use of time in void context at - line 4.
Useless use of length in void context at - line 8.
+########
+
+use warnings FATAL => 'all';
+{
+ no warnings;
+ my $b ; chop $b;
+ {
+ use warnings ;
+ my $b ; chop $b;
+ }
+}
+my $b ; chop $b;
+print STDERR "The End.\n" ;
+EXPECT
+Use of uninitialized value in scalar chop at - line 8.
+Use of uninitialized value in scalar chop at - line 11.
+########
+
+use warnings FATAL => 'all';
+{
+ no warnings FATAL => 'all';
+ my $b ; chop $b;
+ {
+ use warnings ;
+ my $b ; chop $b;
+ }
+}
+my $b ; chop $b;
+print STDERR "The End.\n" ;
+EXPECT
+Use of uninitialized value in scalar chop at - line 8.
+Use of uninitialized value in scalar chop at - line 11.
+########
+
+use warnings FATAL => 'all';
+{
+ no warnings 'syntax';
+ {
+ use warnings ;
+ my $b ; chop $b;
+ }
+}
+my $b ; chop $b;
+print STDERR "The End.\n" ;
+EXPECT
+Use of uninitialized value in scalar chop at - line 7.