NAME¶

std::basic_stacktrace::basic_stacktrace - std::basic_stacktrace::basic_stacktrace

Synopsis¶

basic_stacktrace() noexcept(/* see below */); (1) (since C++23)
explicit basic_stacktrace( const allocator_type& alloc ) noexcept; (2) (since C++23)
basic_stacktrace( const basic_stacktrace& other ); (3) (since C++23)
basic_stacktrace( basic_stacktrace&& other ) noexcept; (4) (since C++23)
basic_stacktrace( const basic_stacktrace& other, (5) (since C++23)
const allocator_type& alloc );
basic_stacktrace( basic_stacktrace&& other, const allocator_type& (6) (since C++23)
alloc );

Constructs an empty basic_stacktrace, or copy/move from other.

1) Default constructor. Constructs an empty basic_stacktrace with a
default-constructed allocator.
2) Constructs an empty basic_stacktrace using alloc as the allocator.
3) Copy constructor. Constructs a basic_stacktrace with the copy of the contents of
other, the allocator is obtained as if by calling
std::allocator_traits<allocator_type>::select_on_container_copy_construction(other.get_allocator()).
4) Move constructor. Constructs a basic_stacktrace with the contents of other using
move semantics. Allocator is move-constructed from that of other. After
construction, other is left in a valid but unspecified state.
5) Same as the copy constructor, except that alloc is used as the allocator.
6) Behaves same as the move constructor if alloc == other.get_allocator().
Otherwise, allocates memory with alloc and performs element-wise move. alloc is used
as the allocator.

(3,5,6) may throw an exception or construct an empty basic_stacktrace on allocation
failure.

Parameters¶

alloc - allocator to use for all memory allocations of the constructed
basic_stacktrace
other - another basic_stacktrace to copy/move from

Exceptions¶

1)
noexcept specification:
noexcept(std::is_nothrow_default_constructible_v<allocator_type>)
3,5,6) May propagate the exception thrown on allocation failure.

Complexity¶

1,2) Constant.
3) Linear in size of other.
4) Constant.
5) Linear in size of other.
6) Linear in size of other if alloc != other.get_allocator(), otherwise constant.

Notes¶

After container move construction (overload (4)), references, pointers, and
iterators (other than the end iterator) to other remain valid, but refer to elements
that are now in *this. The current standard makes this guarantee via the blanket
statement in [container.reqmts]/67, and a more direct guarantee is under
consideration via LWG issue 2321.

Example¶

This section is incomplete
Reason: no example

See also¶

operator= assigns to the basic_stacktrace
(public member function)
current obtains the current stacktrace or its given part
[static] (public static member function)

Categories:¶

* conditionally noexcept
* Todo no example