[Bug libstdc++/38477] [strict-aliasing] warning message contains compiler-generated symbols

[rguenth at gcc dot gnu dot org]

------- Comment #9 from rguenth at gcc dot gnu dot org  2008-12-12 12:09 -------
Btw, if you want to dig yourself - the problem is that the alias set of
const struct _Rb_tree_node is not a subset of struct test.  So the access
of any part of an object of type struct test through a pointer of type
const struct _Rb_tree_node * invokes undefined behavior (from the middle-end
perspective).

See alias.c:record_component_aliases for how the relationship is built.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=38477