rmagic fails on call to GD

[Mark Ellison]

Binary package hint: rmagic

Using Ubuntu 8.10,

Although the error message comes from libgd, it's due to the code in the Settings.pm file referred to below. The problem is that this perl script tries to create a 0x0 image, which apparently worked with earlier versions of libgd.

I expected rmagic (called from a complex PERL script) to generate a report from the output of analog. Instead, no report, and the error message:

gd warning: one parameter to a memory allocation multiplication is negative or zero, failing operation gracefully
Can't call method "can" on an undefined value at /usr/share/rmagic/wadg/rm/Settings.pm line 928.

Here is a fix that worked for me, Settings-orig.pm is the version of Settings.pm which came with the package.

--- Settings-orig.pm 2009-01-09 08:42:44.000000000 +0900
+++ Settings.pm 2009-01-09 08:43:07.000000000 +0900
@@ -907,7 +907,7 @@
        # Check GD for support of desired output format. If none
        # given or not capable, then set output format accordingly.
        #
- my $g = new GD::Image(0,0);
+ my $g = new GD::Image(1,1);

        if( defined $self->val( 'graphs', 'Format' ) ) {
                if( $self->val( 'graphs', 'Format' ) =~ /jpe?g/i ) {

[Andrew Fabian (afabian)]

I just tried Mark's suggested fix. Worked perfectly for me.

[Jamie Strandboge (jdstrand)]

Confirmed on Hardy (rmagic 2.21-4). This would make a fine SRU candidate, since rmagic seems virtually unusable atm.

[berni123 (bernd-bernd--zimmermann)]

Confirmed on Hardy too.
Fixed this way and rmagic is working now.

[Kevin (kkd)]

confirmed on Lucid, patch works.

[Ingram (ingram87)]

Could anyone explain how to apply the patch?

[Ingram (ingram87)]

Just open Settings.pm and search for this line:

my $g = new GD::Image(0,0);

Change it to:

my $g = new GD::Image(1,1);

(Thanks to Kevin)

[Launchpad Janitor (janitor)]

This bug was fixed in the package rmagic - 2.21-4ubuntu1

---------------
rmagic (2.21-4ubuntu1) oneiric; urgency=low

  * 9000-lp315280.patch: create a 1x1 image instead of dying on a 0x0 image
    with recent versions of gd. (LP: #315280)
 -- Jamie Strandboge <email address hidden> Tue, 20 Sep 2011 08:13:10 -0500