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[Bug rtl-optimization/25791] -O2 execution fails, -O and -g work
- From: "ebotcazou at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 19 Jan 2006 08:39:05 -0000
- Subject: [Bug rtl-optimization/25791] -O2 execution fails, -O and -g work
- References: <bug-25791-12018@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #22 from ebotcazou at gcc dot gnu dot org 2006-01-19 08:39 -------
> From what I can tell with the testcase, any static data that is not
> 'referenced' is eliminated. This is terribly non-transparent in programs that
> create tables by using static data to define table members. Only those members
> specifically referenced are retained by -O2. That destroys the tables.
Sure, but you must use arrays for tables, not seemingly contiguous objects
which have never been guaranteed to be contiguous by anyone.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25791