Re: Perl 5.8.6 bug in open()?
- From: mritty@xxxxxxxxx (Paul Lalli)
- Date: Tue, 30 Oct 2007 07:42:02 -0700
On Oct 30, 8:33 am, goo...@xxxxxxxxx wrote:
# --- <the program> ----
my $fname = '/volumes/hd/home/kevin/file_test '; # note file ends
with a space character
print "Exists: <$fname>\n" if (-e $fname);
print "Is a file: <$fname>\n" if (-f $fname);
open(FH, $fname) or die "Can't open '$fname': $!";
close(FH) or die "Can't close '$fname': $!";
# --- <the output> ---
Processing file: file_test
Exists: <file_test >
Is a file: <file_test >
Can't open 'file_test ': No such file or directory at testopen.pl line
42.
# -- <the question> ---
Is this a known bug in Perl 5.8.6?
It's known, but I don't know that it qualifies as a bug. When you
use the two argument form of open, Perl is looking for both the
filename and mode, concatenated together, possibly with spaces
separating them. Since your file ends in a space, you can't use this
shortcut. In reality, you should NEVER use this short cut.
Use the three-argument form of open, and you'll be fine:
open my $FH, '<', $fname or die "Cannot open '$fname': $!";
perldoc -f open
for more information
Paul Lalli
.
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