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[Bug c++/47541] [4.5/4.6 Regression] For integer pointers, the value of ++*p is not written back to memory
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Mon, 31 Jan 2011 17:07:35 +0000
- Subject: [Bug c++/47541] [4.5/4.6 Regression] For integer pointers, the value of ++*p is not written back to memory
- Auto-submitted: auto-generated
- References: <bug-47541-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47541
--- Comment #10 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-01-31 17:07:19 UTC ---
So, type Wrapper as seen by PTA has
Wrapper
offset 64: RefCount
RefCount
offset 0: a
offset 64: b
and the issue is that the ptr parameter gets the address of a as initial
value by PTA. Oops. It really needs to get offset zero as initial address!
We should always keep a subvar for offset zero.
I have a patch.