Regressions on trunk at revision 265996 vs revision 265977

[H.J. Lu (x32)]

New failures:

New passes:
FAIL: gcc.dg/warn-strlen-no-nul.c (internal compiler error)
FAIL: gcc.dg/warn-strlen-no-nul.c (test for excess errors)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 101)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 110)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 111)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 117)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 118)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 119)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 153)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 154)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 155)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 156)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 157)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 158)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 46)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 71)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 72)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 73)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 74)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 75)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 76)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 92)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 96)
FAIL: gcc.dg/warn-strlen-no-nul.c  (test for warnings, line 99)