Regressions on releases/gcc-10 at commit r10-9421 vs commit r10-9419 on Linux/x86_64

[H.J. Lu]

New failures:
FAIL: libstdc++-prettyprinters/simple11.cc print slliter
FAIL: libstdc++-prettyprinters/whatis2.cc whatis assoc1_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis assoc2_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis knuth_b_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis minstd_rand_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis mt19937_64_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis mt19937_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis ranlux24_base_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis ranlux24_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis ranlux48_base_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis ranlux48_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis seq1_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis seq2_holder
FAIL: libstdc++-prettyprinters/whatis2.cc whatis unord1_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis assoc1_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis assoc2_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis knuth_b_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis minstd_rand_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis mt19937_64_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis mt19937_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis ranlux24_base_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis ranlux24_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis ranlux48_base_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis ranlux48_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis seq1_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis seq2_holder
FAIL: libstdc++-prettyprinters/whatis.cc whatis unord1_holder

New passes:
FAIL: libstdc++-prettyprinters/cxx11.cc print rarrptr
FAIL: libstdc++-prettyprinters/cxx11.cc print rempty_ptr
FAIL: libstdc++-prettyprinters/cxx11.cc print reums
FAIL: libstdc++-prettyprinters/cxx11.cc print reums
FAIL: libstdc++-prettyprinters/cxx11.cc print ruom
FAIL: libstdc++-prettyprinters/cxx11.cc print ruomm
FAIL: libstdc++-prettyprinters/cxx11.cc print ruoms
FAIL: libstdc++-prettyprinters/cxx11.cc print ruos
FAIL: libstdc++-prettyprinters/cxx11.cc print ruptr
FAIL: libstdc++-prettyprinters/cxx20.cc print c4
FAIL: libstdc++-prettyprinters/cxx20.cc print c4
FAIL: libstdc++-prettyprinters/cxx20.cc print c5
FAIL: libstdc++-prettyprinters/cxx20.cc print c5
FAIL: libstdc++-prettyprinters/cxx20.cc print c6
FAIL: libstdc++-prettyprinters/cxx20.cc print c6
FAIL: libstdc++-prettyprinters/cxx20.cc print c7
FAIL: libstdc++-prettyprinters/cxx20.cc print c7
FAIL: libstdc++-prettyprinters/cxx20.cc print c8
FAIL: libstdc++-prettyprinters/cxx20.cc print c8
FAIL: libstdc++-prettyprinters/cxx20.cc print c9
FAIL: libstdc++-prettyprinters/cxx20.cc print c9
FAIL: libstdc++-prettyprinters/libfundts.cc print a
FAIL: libstdc++-prettyprinters/libfundts.cc print ab
FAIL: libstdc++-prettyprinters/libfundts.cc print ai
FAIL: libstdc++-prettyprinters/libfundts.cc print ap
FAIL: libstdc++-prettyprinters/libfundts.cc print as
FAIL: libstdc++-prettyprinters/libfundts.cc print as2
FAIL: libstdc++-prettyprinters/libfundts.cc print om
FAIL: libstdc++-prettyprinters/libfundts.cc print op
FAIL: libstdc++-prettyprinters/libfundts.cc print os