bin/46642: insufficient diagnostics from makemandb(8)

[lloyd%must-have-coffee.gen.nz@localhost]

>Number:         46642
>Category:       bin
>Synopsis:       When makemandb has an error, it doesn't say what the error is.
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Jun 30 22:15:00 +0000 2012
>Originator:     Lloyd Parkes
>Release:        NetBSD 6.0_BETA2
>Organization:
Must Have Coffee
>Environment:
System: NetBSD thallid.must-have-coffee.gen.nz 6.0_BETA2 NetBSD 6.0_BETA2 
(XEN3PAE_DOMU) #0: Mon Jun 18 04:48:20 NZST 2012 
lloyd@bob:/vol/scratch/build6/obj.i386/sys/arch/i386/compile/XEN3PAE_DOMU i386
Architecture: i386
Machine: i386
>Description:

My daily output email message from cron contains the following text:
        Updating man page index:
        makemandb: Error in indexing /usr/X11R7/man/man3/Xv.3
        makemandb: Error in indexing /usr/X11R7/man/man3/XvSelectVideoNotify.3
        makemandb: Error in indexing /usr/X11R7/man/man3/XvFreeAdaptorInfo.3
        makemandb: Error in indexing /usr/X11R7/man/man3/XvFreeEncodingInfo.3
        ...

Unfortunately makemandb won't tell me what is wrong, so it is not possible
to fix the problem.

>How-To-Repeat:

Run makemandb.

>Fix:
Unknown, except that the error reporting in makemandb needs to be improved
so that it is useful.