Regressions on trunk at revision 150651 vs revision 150635

[H.J. Lu Intel64]

New failures:
FAIL: 30_threads/timed_mutex/try_lock_for/3.cc execution test
FAIL: gcc.dg/struct/wo_prof_double_malloc.c (internal compiler error)
FAIL: gcc.dg/struct/wo_prof_double_malloc.c (internal compiler error)
FAIL: gcc.dg/struct/wo_prof_double_malloc.c (test for excess errors)
FAIL: gcc.dg/struct/wo_prof_double_malloc.c (test for excess errors)
FAIL: gfortran.dg/compiler-directive_1.f90  -O   (test for errors, line 42)
FAIL: gfortran.dg/compiler-directive_1.f90  -O   (test for errors, line 42)
FAIL: gfortran.dg/compiler-directive_1.f90  -O  (test for excess errors)
FAIL: gfortran.dg/compiler-directive_1.f90  -O  (test for excess errors)
WARNING: program timed out.

New passes: