[Bug middle-end/25140] aliases, including weakref, break alias analysis

[geoffk at gcc dot gnu dot org]

------- Comment #7 from geoffk at gcc dot gnu dot org  2009-09-26 11:51 -------
I looked up 'weakref' in the GCC documentation because I'd forgotten exactly
what it was supposed to do, and noticed that it's actually documented as
applying only to functions.  So, maybe we could just say that this attribute is
only allowed for functions, and produce an error on line 3.

Alexandre's original mail proposing the extension,
<http://gcc.gnu.org/ml/gcc/2005-10/msg00235.html>, suggests the attribute for
both variables and functions, but the explanation of why you'd want this
feature only talks about functions.

The weakref documentation does specifically talk about the case where the
function is referenced both via the weakref and directly through the original
symbol, and I think the typical use cases actually do this.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=25140