Regressions on trunk at revision 230377 vs revision 230372

[Intel Automatic Testing System [Intel64 Core AVX2 PIC]]

New failures:

New passes:
FAIL: g++.dg/cpp/ucn-1.C  -std=gnu++11  target { powerpc-ibm-aix* }  (test for errors, line 12)
FAIL: g++.dg/cpp/ucn-1.C  -std=gnu++11  target { powerpc-ibm-aix* }  (test for errors, line 12)
FAIL: g++.dg/cpp/ucn-1.C  -std=gnu++14  target { powerpc-ibm-aix* }  (test for errors, line 12)
FAIL: g++.dg/cpp/ucn-1.C  -std=gnu++14  target { powerpc-ibm-aix* }  (test for errors, line 12)