https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66301
Martin Jambor <jamborm at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Last reconfirmed| |2015-05-28
Ever confirmed|0 |1
--- Comment #2 from Martin Jambor <jamborm at gcc dot gnu.org> ---
Well, the problem is that in eliminate_dom_walker::before_dom_children
in tree-ssa-pre.c we have:
if (dump_enabled_p ())
dump_possible_polymorphic_call_targets (dump_file, ...)
but dump_enabled_p can return true when dump_file is NULL if
alt_dump_file is not NULL. I suppose that dump_enabled_p was
introduced as a part of the semi-overhaul of dumping interface we got
in 2012 but that never quite caught on, and that it simply can't be
mixed with old-style dumping which just tests dump_file.
The obvious fix would be to change the condition to "if (dump_file)".
Or we might convert the whole thing to new style dumping, but I admit
I have never quite understood it.
