[Bug 1037241] New: perl-GD FTBFS if "-Werror=format-security" flag is used

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https://bugzilla.redhat.com/show_bug.cgi?id=1037241

            Bug ID: 1037241
           Summary: perl-GD FTBFS if "-Werror=format-security" flag is
                    used
           Product: Fedora
           Version: rawhide
         Component: perl-GD
          Assignee: tcallawa@xxxxxxxxxx
          Reporter: dkholia@xxxxxxxxxx
        QA Contact: extras-qa@xxxxxxxxxxxxxxxxx
                CC: paul@xxxxxxxxxxxx, perl-devel@xxxxxxxxxxxxxxxxxxxxxxx,
                    tcallawa@xxxxxxxxxx




Description of problem
----------------------

perl-GD fails to build if "-Werror=format-security" flag is used.

...

cc1: error: -Wformat-security ignored without -Wformat
[-Werror=format-security]

...

We are working on a proposal to enable "-Werror=format-security" for all
packages. Once this flag is enabled, GCC will refuse to compile code that could
be vulnerable to a string format security flaw. For more details, please see
https://fedorahosted.org/fesco/ticket/1185 page.

To understand why it is important to fix this, please see
https://fedoraproject.org/wiki/Format-Security-FAQ page.

How to fix this
---------------

The fix for these errors is quite simple. It's a matter of changing a
line like,

   printf(foo);

to read,

   printf("%s", foo);

That's it.

Please fix this issue in rawhide with a patch (which you should submit
to upstream to merge moving forward). Please do a new build with the
fix in rawhide. Other releases do not need to be directly fixed, but
there should be no harm in pushing out this fix/patch with other needed
changes to those branches.

In the event you don't fix this bug before the next mass rebuild,
provenpackagers may step in and update your package(s) to fix this
issue.

How reproducible
----------------

Build perl-GD-2.49-3.fc20.src.rpm with "-Werror=format-security" flag to
reproduce the problem.

To make this process easier, you can use a modified "redhat-rpm-config" package
from http://people.fedoraproject.org/~halfie/artifacts/redhat-rpm-config/ URL.

$ sha256sum redhat-rpm-config-9.1.0-56.fc20.*
faad7594b2080fe76497d0ce50808c905a93dd7b41c1defdde5ca57e3833d3d2 
redhat-rpm-config-9.1.0-56.fc20.noarch.rpm
5aa9357174305c7285ffdbc92d7ffe1c07a8a95d5459b930461308f5aad75413 
redhat-rpm-config-9.1.0-56.fc20.src.rpm

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