How Can I Effectively Capture and Display Stack Traces for C Exceptions?

How to Capture and Display a Stack Trace During Exceptions

To provide users with information about the cause of exceptions, it is crucial to capture and display stack traces. However, finding the most effective approach can be challenging.

Portable Stack Trace Reporting

Andrew Grant's response does not assist in obtaining a stack trace of the function throwing the exception, as a throw statement alone does not record the current stack trace. Therefore, accessing the stack trace becomes impossible within the catch handler.

GCC-Specific Approach

To resolve this issue using GCC, a stack trace must be generated at the point of the throw instruction and saved with the exception object. However, this method requires that each code throwing an exception utilizes the same Exception class.

External Libraries

For a more flexible solution, consider the following libraries:

• stacktrace.sourceforge.net: A comprehensive library that provides stack trace information.
• C 23 : A forthcoming addition to the C 23 standard.
• boost stacktrace: A robust and portable library.
• backward-cpp: A versatile and feature-rich library.
• cpptrace: A lightweight and portable library with C 11 support.

Latest Updates

In addition to the libraries mentioned above, keep an eye on the following:

• P2490: A proposal for C 26 that aims to introduce [[with_stacktrace]] and std::stacktrace::from_current_exception.
• cpptrace: Its C 11 implementation allows retrieval of stack traces from caught exceptions.

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