[Bug middle-end/51998] compiler hangs on self-recursive alias attribute

[hubicka at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51998

--- Comment #6 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-01-31 13:56:41 UTC ---
Created attachment 26534
  --> http://gcc.gnu.org/bugzilla/attachment.cgi?id=26534
Patch in testing

Hi,
I am testing the attached patch. It also plugs symmetric problem on varpool.
The cycle testing code in varasm I was mentioning is used for weakrefs only.
Porbably that checks could go, but I would preffer to wait for 4.8. There are
too many changes in 4.7 concerning aliases already.

Honza