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8978da072f9ea7653416d59167a07e79be6cadaf
gcc/libstdc++-v3/include/bits
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Patrick Palka 8978da072f libstdc++/regex: Zero-initialize _ExecutorFrame flags 
Prevents uninitialized read bugs, and it's also just natural to assume
flags are initially cleared rather than uninitialized.

In passing rename the _M_end flag to _M_subexpr_end to make it distinct
from _Executor::_M_end.

libstdc++-v3/ChangeLog:

	* include/bits/regex_executor.tcc (_ExecutorFrameBase):
	Zero-initialize _M_byte0.
	(_ExecutorFrameBase::_M_end): Rename to ...
	(_ExecutorFrameBase::_M_subexpr_end): ... this.
	(_Executor::_M_handle_subexpr_begin): Remove now redundant
	clearing of _M_subexpr_end.
	(_Executor::_M_handle_subexpr_end): Adjust after renaming.
	(_Executor::_M_dfs) <case _S_fopcode_restore_cur_results>:
	Likewise.

Reviewed-by: Jonathan Wakely <jwakely@redhat.com>
2026-02-02 15:14:20 -05:00
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algorithmfwd.h
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align.h
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alloc_traits.h
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allocated_ptr.h
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allocator.h
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atomic_base.h
libstdc++: Implement std::atomic::fetch_min/max
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atomic_futex.h
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atomic_timed_wait.h
libstdc++: Fix proxy wait detection in atomic wait
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atomic_wait.h
libstdc++: Improve comments on __wait_args::_M_setup_proxy_wait
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basic_ios.h
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basic_ios.tcc
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basic_string.tcc
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binders.h
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boost_concept_check.h
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c++config
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charconv.h
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chrono_io.h
libstdc++: Fix chrono::parse to read from wide strings [PR123147]
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chrono.h
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cpyfunc_impl.h
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deque.tcc
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elements_of.h
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enable_special_members.h
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erase_if.h
libstdc++: Fix std::erase_if for std::string with -D_GLIBCXX_USE_CXX11_ABI=0.
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formatfwd.h
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funcref_impl.h
libstdc++: Fix construction function_ref from nontype<&S::x> and reference_wrapper [PR121858]
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funcwrap.h
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indirect.h
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intcmp.h
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invoke.h
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iterator_concepts.h
c++: C++26 Reflection [PR120775]
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mofunc_impl.h
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move.h
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new_except.h
libstdc++: Use gnu_inline attribute on constexpr exception methods [PR123183]
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ranges_cmp.h
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regex_constants.h
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regex_error.h
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regex_executor.h
libstdc++/regex: Make DFS executor non-recursive [PR86164]
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regex_executor.tcc
libstdc++/regex: Zero-initialize _ExecutorFrame flags
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regex_scanner.tcc
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regex.h
libstdc++/regex: Make DFS executor non-recursive [PR86164]
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regex.tcc
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requires_hosted.h
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sat_arith.h
libstdc++: Extend __is_standard_integer to cover extended integer types
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semaphore_base.h
libstdc++: Ensure counting_semaphore::try_acquire_for times out [PR122878]
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shared_ptr_atomic.h
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shared_ptr_base.h
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stl_function.h
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stl_heap.h
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text_encoding-data.h
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unicode-data.h
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unicode.h
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version.def
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version.h
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