------- Comment #3 from rguenth at gcc dot gnu dot org 2007-07-03 13:47 ------- I guess what may happen is that we recurse twice, entering the same instance into the htab twice and at the second htab_clear_slot after returning from the first recursion we hit the assert. At least it looks fragile not to re-lookup the element.
-- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32609