syntax error at - line 62, near "[some output from my command pipe]"
Execution of - aborted due to compilation errors.

##</code><code>##

     -p   causes Perl to assume the following loop around your
          program, which makes it iterate over filename arguments
          somewhat like sed:

            LINE:
              while (<>) {
                  ...             # your program goes here
              } continue {
                  print or die "-p destination: $!\n";
              }

##</code><code>##

% perl -MO=Deparse -pl40
^D
 LINE: while (defined($_ = <ARGV>)) {
    chomp $_;
}
continue {
    print $_;
}
- syntax OK
% perl -MO=Deparse -pl40 -e 1
 LINE: while (defined($_ = <ARGV>)) {
    chomp $_;
    '???';
}
continue {
    print $_;
}
-e syntax OK

##</code><code>##

% cat >foo
foo
bar:
^D
% cat foo | perl -p
syntax error at - line 2, near "foo
bar:"
Execution of - aborted due to compilation errors.
##</code><code>##

% cat >foo
print "hello, world\n"
^D
% cat foo | perl
hello, world