tmp/tmpvf9zbh4b/{from.md → to.md}
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| 1 |
+
#### Creation and assignment <a id="stacktrace.basic.cons">[[stacktrace.basic.cons]]</a>
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``` cpp
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static basic_stacktrace current(const allocator_type& alloc = allocator_type()) noexcept;
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```
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*Returns:* A `basic_stacktrace` object with `frames_` storing the
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stacktrace of the current evaluation in the current thread of execution,
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or an empty `basic_stacktrace` object if the initialization of `frames_`
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failed. `alloc` is passed to the constructor of the `frames_` object.
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[*Note 1*: If the stacktrace was successfully obtained, then
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`frames_.front()` is the `stacktrace_entry` representing approximately
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the current evaluation, and `frames_.back()` is the `stacktrace_entry`
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representing approximately the initial function of the current thread of
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execution. — *end note*]
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``` cpp
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static basic_stacktrace current(size_type skip,
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const allocator_type& alloc = allocator_type()) noexcept;
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```
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Let `t` be a stacktrace as-if obtained via
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`basic_stacktrace::current(alloc)`. Let `n` be `t.size()`.
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*Returns:* A `basic_stacktrace` object where `frames_` is
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direct-non-list-initialized from arguments `t.begin() + min(n, skip)`,
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`t.end()`, and `alloc`, or an empty `basic_stacktrace` object if the
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initialization of `frames_` failed.
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``` cpp
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static basic_stacktrace current(size_type skip, size_type max_depth,
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const allocator_type& alloc = allocator_type()) noexcept;
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```
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Let `t` be a stacktrace as-if obtained via
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`basic_stacktrace::current(alloc)`. Let `n` be `t.size()`.
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*Preconditions:* `skip <= skip + max_depth` is `true`.
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*Returns:* A `basic_stacktrace` object where `frames_` is
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| 42 |
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direct-non-list-initialized from arguments `t.begin() + min(n, skip)`,
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`t.begin() + min(n, skip + max_depth)`, and `alloc`, or an empty
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`basic_stacktrace` object if the initialization of `frames_` failed.
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``` cpp
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basic_stacktrace() noexcept(is_nothrow_default_constructible_v<allocator_type>);
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```
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*Ensures:* `empty()` is `true`.
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``` cpp
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explicit basic_stacktrace(const allocator_type& alloc) noexcept;
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```
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*Effects:* `alloc` is passed to the `frames_` constructor.
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*Ensures:* `empty()` is `true`.
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``` cpp
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basic_stacktrace(const basic_stacktrace& other);
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basic_stacktrace(const basic_stacktrace& other, const allocator_type& alloc);
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basic_stacktrace(basic_stacktrace&& other, const allocator_type& alloc);
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basic_stacktrace& operator=(const basic_stacktrace& other);
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basic_stacktrace& operator=(basic_stacktrace&& other)
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noexcept(allocator_traits<Allocator>::propagate_on_container_move_assignment::value ||
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allocator_traits<Allocator>::is_always_equal::value);
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```
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*Remarks:* Implementations may strengthen the exception specification
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for these functions [[res.on.exception.handling]] by ensuring that
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`empty()` is `true` on failed allocation.
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