I have read that valgrind produces some erroneous results due to
ruby's gc implementation.  It would be nice to have an official
suppression file available for ruby, perhaps in CVS (in the misc/
directory for example).

Looking at the ruby/dl problem with valgrind, I can suppress the
warnings I see but I'm in danger of assuming too much.  I need a
sanctioned file which came down from the mountain saying what's OK.

If nothing else, a common file would encourage the use of valgrind by
removing this hassle.

A suppression file is mentioned in [ruby-talk:52065] but it appears
not to work with valgrind-2.x (and changes to ruby since then may have
invalidated it anyway).