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[Bug c++/20912] C++ FE emitting assignments to read-only global symbols
- From: "mark at codesourcery dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 12 Oct 2005 14:55:44 -0000
- Subject: [Bug c++/20912] C++ FE emitting assignments to read-only global symbols
- References: <bug-20912-91@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from mark at codesourcery dot com 2005-10-12 14:55 -------
Subject: Re: C++ FE emitting assignments to read-only global
symbols
dnovillo at redhat dot com wrote:
> Thanks Mark. The underlying code has shifted in the interim. There was
> another bug that would cause us to ICE with code that specifically casted
> away constness. We now should get this micro-optimization on the cases we
> cared for (call-clobbering situations, mostly).
OK, so my patch is no longer directly useful then? (It still seems like
it would be an improvement in the abstract, in that assigning to
TREE_READONLY variables is evil, but if it won't have any immediate
tangible benefit, I'll leave this for 4.2.)
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20912