[Bug libstdc++/52215] [4.7 Regression] FAIL: ext/profile/mutex_extensions_neg.cc (test for excess errors)

[redi at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=52215

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> 2012-02-12 
13:57:32 UTC ---
It makes no sense unless the signature of __atomic_compare_exchange_n is
different when -m32 is used!

Looking into it ...