[Bug 809753] [NEW] logwatch bug in postfix filter

[Brezhonneg]

Public bug reported:

I am using logwatch 7.3.6.cvs20090906-1ubuntu4 on oneiric with postfix
2.8.3-1.

Logwatch is reporting quite a few errors while parsing postfix log
entries. Here is a complete list from my latest logwatch report:

--------------------- Postfix Begin ------------------------

 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 3.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 10.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 25.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 31.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 37.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 43.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 49.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 72.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 112.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 118.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 134.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 147.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 153.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 159.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 189.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 195.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 201.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 214.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 220.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 226.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 233.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 240.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 247.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 257.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 279.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 285.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 291.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 297.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 303.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 309.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 317.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 326.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 331.
 Use of uninitialized value $_[0] in reverse at /usr/share/logwatch/scripts/services/postfix line 254, <> line 336.
 ****** Summary *************************************************************************************
 
[rest of the logwatch log here]


Line 254 of /usr/share/logwatch/scripts/services/postfix is located in a sub called commify:
 251 # Inserts commas in numbers for easier readability
 252 #
 253 sub commify ($) {
 254     my $text = reverse $_[0];
 255     $text =~ s/(\d\d\d)(?=\d)(?!\d*\.)/$1,/g;
 256     return scalar reverse $text;
 257 }

I know nothing about perl so I do not have the slightest idea of what is
wrong and how to fix...

** Affects: logwatch (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/809753

Title:
  logwatch bug in postfix filter

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