Hi, http://gcc.gnu.org/bugs/management.html says that bugs in WAITING state for more than three months, waiting for information on how to reproduce the bug, can be closed, but it is unclear what the "closed" state should be.
The description of WORKSFORME sounds closest: we don't know how to reproduce the bug. Should that be used? The only other choices are FIXED (wrong), DUPLICATE (wrong), INVALID (we don't know that), or WONTFIX (we're not saying we won't fix it if we get a testcase). This came up because RMS raised a concern about the large number of wrong-code bugs; many of those not marked "regression" are WAITING, or should be WAITING. I'd like to knock off a few (and of course they can be re-opened if we get more data).