------- Comment #6 from dcb314 at hotmail dot com 2007-10-18 17:33 ------- (In reply to comment #2) > Although valgrind is correct that we are doing an uninitialized read, the code > is actually working as designed and is correct.
I wish I had a pound for every time I've heard that ;-> > So yes we do some uninitialized accesses to the sparse array, but that's > ok. Sure ? So absolutely *any* value is fine ? Aren't there some machines where unaligned accesses to words fail ? > It's also a benefit of sparseset, given that we don't > have to memset/clear the whole sparseset data structure before using it, so > it's fast. I'd appreciate seeing some performance measurement numbers which tell us just how fast, so we can make a comparison of just how much speed this tricky code is buying us. -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=33796
