std::basic_stacktrace<Allocator>::size

 

C++

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Diagnostics library

Exception handling exception uncaught_exceptionuncaught_exceptions (until C++20*)(C++17) exception_ptr (C++11) make_exception_ptr (C++11) current_exception (C++11) rethrow_exception (C++11) nested_exception (C++11) throw_with_nested (C++11) rethrow_if_nested (C++11) Exception handling failures terminate terminate_handler get_terminate (C++11) set_terminate bad_exception unexpected (until C++17*) unexpected_handler (until C++17*) get_unexpected (C++11)(until C++17*)     set_unexpected (until C++17*) Error codes Error codes errno

Exception categories logic_error invalid_argument domain_error length_error out_of_range runtime_error range_error overflow_error underflow_error tx_exception (TM TS) System error support error_category (C++11) generic_category (C++11) system_category (C++11) error_condition (C++11) errc (C++11) error_code (C++11) system_error (C++11) Assertions assert Stacktrace stacktrace_entry (C++23) basic_stacktrace (C++23)

 

std::basic_stacktrace

Member functions

basic_stacktrace::basic_stacktrace (C++23)

basic_stacktrace::~basic_stacktrace (C++23)

basic_stacktrace::operator= (C++23)

basic_stacktrace::current (C++23)

basic_stacktrace::get_allocator (C++23)

Iterators

basic_stacktrace::beginbasic_stacktrace::cbegin (C++23)(C++23)

basic_stacktrace::endbasic_stacktrace::cend (C++23)(C++23)

basic_stacktrace::rbeginbasic_stacktrace::crbegin (C++23)(C++23)

basic_stacktrace::rendbasic_stacktrace::crend (C++23)(C++23)

Capacity

basic_stacktrace::empty (C++23)

basic_stacktrace::size (C++23)

basic_stacktrace::max_size (C++23)

Element access

basic_stacktrace::operator[] (C++23)

basic_stacktrace::at (C++23)

Modifiers

basic_stacktrace::swap (C++23)

Non-member functions

operator== operator<=> (C++23)(C++23)

std::swap (C++23)

std::to_string (C++23)

operator<< (C++23)

Helper classes

std::hash<std::basic_stacktrace> (C++23)

std::formatter<std::basic_stacktrace> (C++23)

 

size_type size() const noexcept;		(since C++23)

Returns the number of entries in the stacktrace.

Parameters

(none)

Return value

The number of entries in the stacktrace.

Complexity

Constant.

Example

The following code uses size to display the number of entries in the current stacktrace:

Run this code

#include <stacktrace>
#include <iostream>
 
int main()
{ 
    auto trace = std::stacktrace::current();
 
    std::cout << "trace contains " << trace.size() << " entries.\n";
}

Possible output:

trace contains 3 entries.

See also

empty (C++23)	checks whether the basic_stacktrace is empty (public member function)
max_size (C++23)	returns the maximum possible number of stacktrace entries (public member function)