Regressions on trunk at revision 191792 vs revision 191750

[H.J. Lu x32]

New failures:
FAIL: 29_atomics/atomic/cons/constexpr.cc (test for excess errors)
FAIL: 29_atomics/atomic/cons/copy_list.cc (test for excess errors)
FAIL: 29_atomics/atomic/cons/default.cc (test for excess errors)
FAIL: 29_atomics/atomic/cons/direct_list.cc (test for excess errors)
FAIL: 29_atomics/atomic/cons/single_value.cc (test for excess errors)
FAIL: 29_atomics/atomic/operators/integral_assignment.cc (test for excess errors)
FAIL: 29_atomics/atomic/operators/integral_conversion.cc (test for excess errors)
FAIL: 29_atomics/atomic/requirements/base_classes.cc (test for excess errors)
FAIL: 29_atomics/atomic/requirements/explicit_instantiation/1.cc (test for excess errors)
FAIL: 29_atomics/atomic_flag/requirements/standard_layout.cc (test for excess errors)
FAIL: 29_atomics/atomic_flag/requirements/trivial.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/cons/constexpr.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/cons/copy_list.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/cons/default.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/cons/direct_list.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/cons/single_value.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/bitwise.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/bitwise_neg.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/decrement.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/decrement_neg.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/increment.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/increment_neg.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/integral_assignment.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/operators/integral_conversion.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/requirements/standard_layout.cc (test for excess errors)
FAIL: 29_atomics/atomic_integral/requirements/trivial.cc (test for excess errors)

New passes: