Regressions on master at commit r12-6715 vs commit r12-6655 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: g++.dg/cpp0x/constexpr-compare2.C  -std=c++20 (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-compare2.C  -std=c++20 (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-compare2.C  -std=c++20 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++14 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++17 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++20 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++20 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++20 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++98 (test for excess errors)
FAIL: g++.dg/warn/pr104025.C  -std=gnu++98 (test for excess errors)

New passes:
FAIL: check-MAINTAINERS.py
FAIL: check-MAINTAINERS.py
FAIL: check-MAINTAINERS.py
FAIL: gcc.dg/torture/pr57147-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr57147-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: gcc.dg/torture/pr57147-2.c   -O2 -flto -fno-use-linker-plugin -flto-partition=none  (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-compare2.C  -std=c++2a (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-compare2.C  -std=c++2a (test for excess errors)
FAIL: g++.dg/cpp0x/constexpr-compare2.C  -std=c++2a (test for excess errors)
ERROR: -------------------------------------------
ERROR: -------------------------------------------
ERROR: -------------------------------------------
ERROR:  couldn't open "/export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/../dumpfile.c": no such file or directory
ERROR:  couldn't open "/export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/../dumpfile.c": no such file or directory
ERROR:  couldn't open "/export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/../dumpfile.c": no such file or directory
ERROR: couldn't open "/export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/../dumpfile.c": no such file or directory
ERROR: couldn't open "/export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/../dumpfile.c": no such file or directory
ERROR: couldn't open "/export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/../dumpfile.c": no such file or directory
ERROR: g++.dg/gcov/gcov-17.C  : error executing dg-final: can't read "script": no such variable
ERROR: g++.dg/gcov/gcov-17.C  : error executing dg-final: can't read "script": no such variable
ERROR: g++.dg/gcov/gcov-17.C  : error executing dg-final: can't read "script": no such variable
ERROR: g++.dg/gcov/pr98273.C  : error executing dg-final: can't read "script": no such variable
ERROR: g++.dg/gcov/pr98273.C  : error executing dg-final: can't read "script": no such variable
ERROR: g++.dg/gcov/pr98273.C  : error executing dg-final: can't read "script": no such variable
ERROR: in testcase /export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/gcc.misc-tests/options.exp
ERROR: in testcase /export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/gcc.misc-tests/options.exp
ERROR: in testcase /export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/gcc.misc-tests/options.exp
ERROR:  tcl error code POSIX ENOENT {no such file or directory}
ERROR:  tcl error code POSIX ENOENT {no such file or directory}
ERROR:  tcl error code POSIX ENOENT {no such file or directory}
ERROR: tcl error code POSIX ENOENT {no such file or directory}
ERROR: tcl error code POSIX ENOENT {no such file or directory}
ERROR: tcl error code POSIX ENOENT {no such file or directory}
ERROR:  tcl error info:
ERROR:  tcl error info:
ERROR:  tcl error info:
ERROR: tcl error sourcing /export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/gcc.misc-tests/options.exp.
ERROR: tcl error sourcing /export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/gcc.misc-tests/options.exp.
ERROR: tcl error sourcing /export/gnu/import/git/gcc-test-master-intel64/src-master/gcc/testsuite/gcc.misc-tests/options.exp.