The C Standard Library

C++ Library - <stacktrace>

The <stacktrace> header in C++20, introduces a way to work with the stack traces. It provides a snapshot of the function call history at a particular point in the program execution, which is helpful for debugging and error handling.

Before C++20, obtaining stack traces requires a platform-specific libraries or third-party tools making it a messed task. However, with the introduction of <stacktrace> it regulates the process, enabling the cross-platform compatibility and reducing the dependence on the external libraries.

Including <stacktrace> Header

To include the <stacktrace> header in your C++ program, you can use the following syntax.

#include <stacktrace>

Functions of <stacktrace> Header

Below is list of all functions from <stacktrace> header.

Sr.No	Functions & Description
1	operator= It assigns to the basic_stacktrace.
2	current It obtains the current stacktrace or its given part.
3	get_allocator It returns the associated allocator.
4	begin It returns an iterator to the beginning.
5	cbegin It returns an constant iterator to the beginning.
6	end It returns an iterator to the end.
7	cend It returns an constant iterator to the end.
8	rbegin It returns a reverse iterator to the beginning.
9	crbegin It returns a constant reverse iterator to the beginning.
10	rend It returns a reverse iterator to the end.
11	crend It returns a constant reverse iterator to the end.
12	empty It checks whether the stacktrace is empty.
13	size It returns the number of stacktrace entries.
14	max_size It returns the maximum possible number of stacktrace entries.
15	operator[] It access specified stacktrace entry.
16	at It access specified stacktrace entry with bounds checking.
17	swap It swaps the contents.

Non-member functions

Sr.No	Functions & Description
1	operator== It compares the sizes and the contents of two basic_stacktrace values.
2	to_string It returns a string with a description of the stacktrace.
3	operator<< It performs stream output of stracktrace.

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