std::basic_stacktrace<Allocator>:: current

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static basic_stacktrace current ( const allocator_type & alloc =
allocator_type ( ) ) noexcept ;
(1) (since C++23)
static basic_stacktrace current ( size_type skip, const allocator_type & alloc =
allocator_type ( ) ) noexcept ;
(2) (since C++23)
static basic_stacktrace current ( size_type skip, size_type max_depth,

const allocator_type & alloc =

allocator_type ( ) ) noexcept ;
(3) (since C++23)

Let s [ i ] (0 ≤ i < n ) denote the ( i +1 )-th stacktrace entry in the stacktrace of the current evaluation in the current thread of execution, where n is the count of the stacktrace entries in the stackentry.

1) Attempts to create a basic_stacktrace consisting of s [ 0 ] , s [ 1 ] , ..., s [ n - 1 ] .
2) Attempts to create a basic_stacktrace consisting of s [ m ] , s [ m + 1 ] , ..., s [ n - 1 ] , where m is min(skip, n ) .
3) Attempts to create a basic_stacktrace consisting of s [ m ] , s [ m + 1 ] , ..., s [ o - 1 ] , where m is min(skip, n ) and o is min(skip + max_depth, n ) . The behavior is undefined if the skip + max_depth < skip (i.e. the mathematical result of skip + max_depth overflows).

In all cases, alloc is stored into the created basic_stacktrace and used to allocate the storage for stacktrace entries.

Parameters

alloc - allocator to use for all memory allocations of the constructed basic_stacktrace
skip - the number of stacktrace entries to skip
max_depth - the maximum depth of the stacktrace entries

Return value

If the allocation succeeds, the basic_stacktrace described above.

Otherwise, an empty basic_stacktrace .

Example

See also

creates a new basic_stacktrace
(public member function)
[static]
constructs a new source_location corresponding to the location of the call site
(public static member function of std::source_location )