[Bug 203270] [security/libfprint] pam_fprint fails every two times with a GLib-error

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203270

            Bug ID: 203270
           Summary: [security/libfprint] pam_fprint fails every two times
                    with a GLib-error
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: info at juanmolina.eu
                CC: lichray at gmail.com
                CC: lichray at gmail.com
             Flags: maintainer-feedback?(lichray at gmail.com)

FreeBSD-CURRENT r288108, libfprint-0.6.0 and pam_fprint-20080330_1. Not using
fprint_demo.

One time in two, pam_fprint_enroll, login or su fail with the following error:

(process:1232): GLib-ERROR **: gmem.c:134: failed to allocate
18446744073709551612 bytes
Trace/BPT trap

The following execution of pam_fprint_enroll, login or su work (as long as the
fingerprint is recognized, which is not always easy!). This "fails every two
times" is strictly repeatable.

The fingerprint reader is recognized as a Validity VFS5011 on my Lenovo
ThinkPad S440.

I have only found another reference to this error:
http://home.ullrich-online.cc/fingerprint/Forum/topic.php?TopicId=381

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