1.2 KiB
Example: C++ exception handling
(See the README.md file in the upper level 'examples' directory for more information about examples.)
This example demonstrates usage of C++ exceptions in ESP-IDF.
By default, C++ exceptions support is disabled in ESP-IDF. It can be enabled using CONFIG_COMPILER_CXX_EXCEPTIONS configuration option.
In this example, sdkconfig.defaults file sets CONFIG_COMPILER_CXX_EXCEPTIONS option. This enables both compile time support (-fexceptions compiler flag) and run-time support for C++ exception handling.
Example source code declares a class which can throw exception from the constructor, depending on the argument. It illustrates that exceptions can be thrown and caught using standard C++ facilities.
How to use example
Build and Flash
idf.py -p PORT flash monitor
(Replace PORT with the name of the serial port.)
(To exit the serial monitor, type Ctrl-].)
See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
Example Output
app_main starting
In constructor, arg=42
In constructor, arg=0
In destructor, m_arg=42
Exception caught: Exception in constructor
app_main done