[Bug tree-optimization/47193] [4.6 Regression] ICE: in function_and_variable_visibility, at ipa.c:857 with static var weakref'd to other weakref'd static var

[zsojka at seznam dot cz]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=47193

--- Comment #3 from Zdenek Sojka <zsojka at seznam dot cz> 2011-01-06 18:34:31 
UTC ---
----- testcase2.c -----
typedef int vtype;
static vtype Wv10a __attribute__((weakref ("Wv10b")));
static vtype Wv10b __attribute__((weakref ("Wv10c")));
static vtype Wv10c __attribute__((weakref ("Wv10d")));
static vtype Wv10d __attribute__((weakref ("wv10")));
extern vtype wv10;
-----------------------

Is this also invalid? It fails the same way:
$ gcc testcase2.c
testcase2.c:6:1: internal compiler error: in function_and_variable_visibility,
at ipa.c:857
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