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[Bug debug/45419] -fcompare-debug failure at -O3
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 26 Aug 2010 20:02:31 -0000
- Subject: [Bug debug/45419] -fcompare-debug failure at -O3
- References: <bug-45419-14164@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #6 from hjl dot tools at gmail dot com 2010-08-26 20:02 -------
(In reply to comment #4)
> Created an attachment (id=21574)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=21574&action=view) [edit]
> different testcase
>
> Thank you for answers! This not yet reduced testcase fails in a similiar way
> (r163468, x86_64-linux). It needs only -O2 to reproduce.
>
> $ gcc -std=gnu++0x -fcompare-debug -O2 040.ii -w
> gcc: error: 040.ii: -fcompare-debug failure (length)
> $ diff 040.*gkd
> 54739c54739
> < (const_int 8 [0x8]))) [ MEM[(const struct OverflowSafeInt
> &)&CMD_ERROR + 8].m_value+0 S8 A64])
> ---
> > (const_int 8 [0x8]))) [ MEM[(struct OverflowSafeInt *)&CMD_ERROR + 8B].m_value+0 S8 A64])
>
> It shows 3 differences:
> missing const
> & -> * (PR45408)
> 8 -> 8B
>
>
This is caused by revision 161655:
http://gcc.gnu.org/ml/gcc-cvs/2010-07/msg00006.html
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |rguenth at gcc dot gnu dot
| |org
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-08-26 20:02:30
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45419