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gcc/libstdc++-v3/include/bits
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Jonathan Wakely 789c57bc5f libstdc++: Fix undefined behaviour in std::string 
This fixes a ubsan error when constructing a string with a null pointer:

bits/basic_string.h:534:21: runtime error: applying non-zero offset 18446744073709551615 to null pointer

The _M_construct function only cares whether the second pointer is
non-null, so create a non-null value without undefined arithmetic.

We can also pass the random_access_iterator_tag directly to the
_M_construct function, to avoid going via the tag dispatching
_M_construct_aux, because we know we have pointers not integers here.

libstdc++-v3/ChangeLog:

	* include/bits/basic_string.h (basic_string(const CharT*, const A&)):
	Do not do arithmetic on null pointer.
2021-05-04 22:45:02 +01:00
..
algorithmfwd.h
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2021-01-04 10:26:59 +01:00
align.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
alloc_traits.h
libstdc++: Fix Doxygen warnings
2021-04-06 16:43:24 +01:00
allocated_ptr.h
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2021-01-04 10:26:59 +01:00
allocator.h
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2021-01-04 10:26:59 +01:00
atomic_base.h
libstdc++: Refactor/cleanup of C++20 atomic wait implementation
2021-04-20 15:14:58 +01:00
atomic_futex.h
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2021-01-04 10:26:59 +01:00
atomic_timed_wait.h
libstdc++: Fix semaphore to work with system_clock timeouts
2021-04-22 17:35:00 +01:00
atomic_wait.h
libstdc++: Fix "bare" notifications dropped by waiters check
2021-04-22 07:34:02 -07:00
basic_ios.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
basic_ios.tcc
libstdc++: Use std::addressof to avoid ADL for operator& [PR 60497]
2021-04-30 14:57:40 +01:00
basic_string.h
libstdc++: Fix undefined behaviour in std::string
2021-05-04 22:45:02 +01:00
basic_string.tcc
libstdc++: Use std::addressof to avoid ADL for operator& [PR 60497]
2021-04-30 14:57:40 +01:00
boost_concept_check.h
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2021-01-04 10:26:59 +01:00
c++0x_warning.h
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2021-01-04 10:26:59 +01:00
c++config
libstdc++: Disable "ALT128" long double support for Clang
2021-03-23 15:00:43 +00:00
char_traits.h
libstdc++: Fix up constexpr std::char_traits<char>::compare [PR99181]
2021-02-23 09:30:18 +01:00
charconv.h
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2021-01-04 10:26:59 +01:00
codecvt.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
concept_check.h
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2021-01-04 10:26:59 +01:00
cpp_type_traits.h
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2021-01-04 10:26:59 +01:00
deque.tcc
libstdc++: Use std::addressof to avoid ADL for operator& [PR 60497]
2021-04-30 14:57:40 +01:00
enable_special_members.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
erase_if.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
forward_list.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
forward_list.tcc
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2021-01-04 10:26:59 +01:00
fs_dir.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
fs_fwd.h
libstdc++: Fix even more doxygen markup for group close commands
2021-04-09 13:09:23 +01:00
fs_ops.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
fs_path.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
fstream.tcc
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2021-01-04 10:26:59 +01:00
functexcept.h
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2021-01-04 10:26:59 +01:00
functional_hash.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
gslice_array.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
gslice.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
hashtable_policy.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
hashtable.h
libstdc++: Fix invalid constexpr function in C++11 mode [PR 99985]
2021-04-09 13:09:24 +01:00
indirect_array.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
invoke.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
ios_base.h
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2021-01-04 10:26:59 +01:00
istream.tcc
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2021-01-04 10:26:59 +01:00
iterator_concepts.h
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2021-01-04 10:26:59 +01:00
list.tcc
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2021-01-04 10:26:59 +01:00
locale_classes.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
locale_classes.tcc
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2021-01-04 10:26:59 +01:00
locale_conv.h
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2021-01-04 10:26:59 +01:00
locale_facets_nonio.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
locale_facets_nonio.tcc
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2021-01-04 10:26:59 +01:00
locale_facets.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
locale_facets.tcc
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2021-01-04 10:26:59 +01:00
localefwd.h
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2021-01-04 10:26:59 +01:00
mask_array.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
max_size_type.h
libstdc++: Fix Doxygen warnings
2021-04-06 16:43:24 +01:00
memoryfwd.h
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2021-01-04 10:26:59 +01:00
move.h
libstdc++: Add nodiscard attribute to cast-like functions
2021-04-06 16:43:25 +01:00
node_handle.h
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2021-01-04 10:26:59 +01:00
ostream_insert.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
ostream.tcc
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2021-01-04 10:26:59 +01:00
parse_numbers.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
postypes.h
libstdc++: Remove GLIBCXX_CHECK_INT64_T checks
2021-04-30 20:30:46 +01:00
predefined_ops.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
ptr_traits.h
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2021-01-04 10:26:59 +01:00
quoted_string.h
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2021-01-04 10:26:59 +01:00
random.h
libstdc++: Remove _GLIBCXX_USE_INT128 autoconf macro
2021-05-04 12:07:09 +01:00
random.tcc
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2021-01-04 10:26:59 +01:00
range_access.h
libstdc++: Add noexcept to std::begin etc as per LWG 2280 and 3537
2021-03-22 15:56:49 +00:00
ranges_algo.h
libstdc++: Fix various bugs in ranges_algo.h [PR100187, ...]
2021-04-27 23:21:19 -04:00
ranges_algobase.h
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2021-01-04 10:26:59 +01:00
ranges_base.h
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2021-01-04 10:26:59 +01:00
ranges_cmp.h
libstdc++: Add nodiscard attribute to cast-like functions
2021-04-06 16:43:25 +01:00
ranges_uninitialized.h
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2021-01-04 10:26:59 +01:00
ranges_util.h
libstdc++: Implement P2367 changes to avoid some list-initialization
2021-04-30 10:59:20 -04:00
refwrap.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
regex_automaton.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
regex_automaton.tcc
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2021-01-04 10:26:59 +01:00
regex_compiler.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
regex_compiler.tcc
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2021-01-04 10:26:59 +01:00
regex_constants.h
libstdc++: Fix more doxygen markup for group close commands
2021-04-08 21:42:58 +01:00
regex_error.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
regex_executor.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
regex_executor.tcc
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2021-01-04 10:26:59 +01:00
regex_scanner.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
regex_scanner.tcc
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2021-01-04 10:26:59 +01:00
regex.h
libstdc++: Fix Doxygen warnings
2021-04-06 16:43:24 +01:00
regex.tcc
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2021-01-04 10:26:59 +01:00
semaphore_base.h
libstdc++: Add missing headers for errno and std::terminate
2021-04-26 12:30:26 +01:00
shared_ptr_atomic.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
shared_ptr_base.h
libstdc++: Reject std::make_shared<T[]> [PR 99006]
2021-04-22 15:49:27 +01:00
shared_ptr.h
libstdc++: Reject std::make_shared<T[]> [PR 99006]
2021-04-22 15:49:27 +01:00
slice_array.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
specfun.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
sstream.tcc
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2021-01-04 10:26:59 +01:00
std_abs.h
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2021-01-04 10:26:59 +01:00
std_function.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
std_mutex.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
std_thread.h
libstdc++: Add missing noexcept on std::thread member function [PR 100298]
2021-04-28 12:45:49 +01:00
stl_algo.h
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2021-01-04 10:26:59 +01:00
stl_algobase.h
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2021-01-04 10:26:59 +01:00
stl_bvector.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
stl_construct.h
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2021-01-04 10:26:59 +01:00
stl_deque.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_function.h
libstdc++: Add unordered containers heterogeneous lookup
2021-02-09 21:56:27 +01:00
stl_heap.h
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2021-01-04 10:26:59 +01:00
stl_iterator_base_funcs.h
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2021-01-04 10:26:59 +01:00
stl_iterator_base_types.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_iterator.h
libstdc++: Implement P2259R1 changes [PR95983]
2021-04-20 09:18:50 -04:00
stl_list.h
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2021-01-04 10:26:59 +01:00
stl_map.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_multimap.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_multiset.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_numeric.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_pair.h
libstdc++: Simplify std::pair constraints using concepts
2021-04-28 17:56:51 +01:00
stl_queue.h
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2021-01-04 10:26:59 +01:00
stl_raw_storage_iter.h
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2021-01-04 10:26:59 +01:00
stl_relops.h
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2021-01-04 10:26:59 +01:00
stl_set.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_stack.h
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2021-01-04 10:26:59 +01:00
stl_tempbuf.h
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2021-01-04 10:26:59 +01:00
stl_tree.h
libstdc++: Use std::addressof to avoid ADL for operator& [PR 60497]
2021-04-30 14:57:40 +01:00
stl_uninitialized.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
stl_vector.h
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2021-01-04 10:26:59 +01:00
stream_iterator.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
streambuf_iterator.h
libstdc++: Fix even more doxygen markup for group close commands
2021-04-09 13:09:23 +01:00
streambuf.tcc
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2021-01-04 10:26:59 +01:00
string_view.tcc
libstdc++: Optimize std::string_view::find [PR 66414]
2021-01-27 13:45:52 +00:00
stringfwd.h
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2021-01-04 10:26:59 +01:00
this_thread_sleep.h
libstdc++: Refactor/cleanup of C++20 atomic wait implementation
2021-04-20 15:14:58 +01:00
uniform_int_dist.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
unique_lock.h
libstdc++: Fix headers that can't be used as header units [PR 99413]
2021-03-10 15:27:41 +00:00
unique_ptr.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
unordered_map.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
unordered_set.h
libstdc++: Fix doxygen markup for group close commands
2021-04-06 16:43:24 +01:00
uses_allocator_args.h
libstdc++: Fix even more doxygen markup for group close commands
2021-04-09 13:09:23 +01:00
uses_allocator.h
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2021-01-04 10:26:59 +01:00
valarray_after.h
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2021-01-04 10:26:59 +01:00
valarray_array.h
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2021-01-04 10:26:59 +01:00
valarray_array.tcc
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2021-01-04 10:26:59 +01:00
valarray_before.h
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2021-01-04 10:26:59 +01:00
vector.tcc
libstdc++: Use std::addressof to avoid ADL for operator& [PR 60497]
2021-04-30 14:57:40 +01:00