Regressions on trunk at revision 193728 vs revision 193723

[H.J. Lu Intel64 Core 2/i7]

New failures:
FAIL: gcc.c-torture/compile/pr43186.c  -O3 -fomit-frame-pointer -funroll-loops  (test for excess errors)
FAIL: gcc.dg/binary-constants-1.c (test for excess errors)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 24)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 25)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 26)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 27)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 35)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 36)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 37)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 38)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 41)
FAIL: gfortran.dg/integer_exponentiation_4.f90  -O   (test for errors, line 42)

New passes:
FAIL: PR26858 compilation from source