[Bug testsuite/79356] XPASS in attr-alloc_size-11.c

[vogt at linux dot vnet.ibm.com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=79356

--- Comment #13 from Dominik Vogt <vogt at linux dot vnet.ibm.com> ---
Patch: https://gcc.gnu.org/ml/gcc-patches/2017-03/msg01468.html