Regressions on master at commit r12-7716 vs commit r12-7700 on Linux/i686

[H.J. Lu]

New failures:
FAIL: g++.dg/cpp0x/variadic-alias3.C  -std=c++14 (internal compiler error: in hashtab_chk_error, at hash-table.cc:137)
FAIL: g++.dg/cpp0x/variadic-alias3.C  -std=c++14 (test for excess errors)

New passes:
FAIL: g++.dg/torture/pr104601.C   -O0  (test for excess errors)
FAIL: g++.dg/torture/pr104601.C   -O1  (test for excess errors)
FAIL: g++.dg/torture/pr104601.C   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/torture/pr104601.C   -O2 -flto -fuse-linker-plugin -fno-fat-lto-objects  (test for excess errors)
FAIL: g++.dg/torture/pr104601.C   -O2  (test for excess errors)
FAIL: g++.dg/torture/pr104601.C   -O3 -g  (test for excess errors)
FAIL: g++.dg/torture/pr104601.C   -Os  (test for excess errors)