[Bug rtl-optimization/25654] [4.0/4.1/4.2 Regression] RTL alias analysis unprepared to handle stack slot sharing

[pinskia at gcc dot gnu dot org]

------- Comment #11 from pinskia at gcc dot gnu dot org  2006-01-19 00:19 -------
(In reply to comment #10)
> My understanding of C type based aliasing rules always was that char, as an
> exception, might alias with everything.  Perhaps I lived in false belief for a
> while, but at least -Wstrict-aliasing seems to think so:

The aliasing rules are asymmetrical.

See http://gcc.gnu.org/ml/gcc-patches/2005-11/msg00980.html


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25654