Regressions on trunk at revision 190139 vs revision 190123

[H.J. Lu ia32 Core 2/i7]

New failures:
FAIL: 23_containers/map/element_access/2.cc (test for excess errors)
FAIL: gfortran.dg/array_5.f90  -O  (test for excess errors)
FAIL: gfortran.dg/maxlocval_2.f90  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/namelist_45.f90  -O1  (test for excess errors)
FAIL: gfortran.dg/newunit_1.f90  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gfortran.dg/pr40839.f90  -O  (test for excess errors)
FAIL: gfortran.dg/realloc_on_assign_9.f90  -O2  (test for excess errors)

New passes:
FAIL: gfortran.dg/logical_2.f90  -O  (test for excess errors)
FAIL: gfortran.dg/mod_large_1.f90  -O2  (test for excess errors)
FAIL: gfortran.dg/negative_automatic_size.f90  -O1  (test for excess errors)