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from 6a13a4e3f29 libstdc++: Fix unnecessary allocations in read_symlink [PR 96484] new 6a3f3e08723 arm: Clear canary value after stack_protect_test [PR96191] new 4e39f563c0c libstdc++: Do not set eofbit eagerly in operator>>(istream& [...] new 140cf935cd1 libstdc++: Implement P0966 std::string::reserve should not shrink new 11b8ffa4930 mmix: fix gcc.dg/loop-9.c by more accurate move insns new 74d91e8bb79 Daily bump.

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Summary of changes: gcc/ChangeLog | 107 +++++++++++++++ gcc/DATESTAMP | 2 +- gcc/config/arm/arm.md | 6 +- gcc/config/arm/thumb1.md | 8 +- gcc/config/mmix/mmix.md | 48 +++++-- gcc/testsuite/ChangeLog | 144 +++++++++++++++++++++ gcc/testsuite/gcc.target/arm/stack-protector-1.c | 63 +++++++++ .../{aarch64 => arm}/stack-protector-2.c | 0 libstdc++-v3/ChangeLog | 64 +++++++++ libstdc++-v3/config/abi/pre/gnu.ver | 17 ++- libstdc++-v3/doc/xml/manual/status_cxx2020.xml | 3 +- libstdc++-v3/include/bits/basic_string.h | 52 ++++---- libstdc++-v3/include/bits/basic_string.tcc | 121 ++++++++++++----- libstdc++-v3/include/bits/istream.tcc | 4 +- libstdc++-v3/src/c++98/istream-string.cc | 2 +- libstdc++-v3/src/c++98/istream.cc | 3 +- .../21_strings/basic_string/capacity/1.cc | 14 +- .../21_strings/basic_string/capacity/char/1.cc | 14 +- .../21_strings/basic_string/capacity/char/18654.cc | 8 +- .../21_strings/basic_string/capacity/char/2.cc | 6 +- .../21_strings/basic_string/capacity/wchar_t/1.cc | 14 +- .../basic_string/capacity/wchar_t/18654.cc | 8 +- .../21_strings/basic_string/capacity/wchar_t/2.cc | 6 +- .../basic_string/inserters_extractors/char/13.cc} | 39 +++--- .../inserters_extractors/wchar_t/13.cc} | 39 +++--- .../basic_istream/extractors_character/char/5.cc} | 37 +++--- .../extractors_character/wchar_t/5.cc} | 38 +++--- 27 files changed, 687 insertions(+), 180 deletions(-) create mode 100644 gcc/testsuite/gcc.target/arm/stack-protector-1.c copy gcc/testsuite/gcc.target/{aarch64 => arm}/stack-protector-2.c (100%) copy libstdc++-v3/testsuite/{20_util/specialized_algorithms/uninitialized_value_co [...] copy libstdc++-v3/testsuite/{20_util/specialized_algorithms/uninitialized_value_co [...] copy libstdc++-v3/testsuite/{20_util/specialized_algorithms/uninitialized_default_ [...] copy libstdc++-v3/testsuite/{20_util/specialized_algorithms/uninitialized_value_co [...]