Troubleshooting basics

When you encounter unexpected issues like your application crashing when Duktape is initialized, some basic steps to diagnose the issue:

• Enable assertions with -DDUK_USE_ASSERTIONS given to tools/configure.py.

• Enable debug prints, see How to enable debug prints.

• If possible, run with valgrind or some other memory checker to rule out any obvious memory corruption issues.

• If you're using a custom Duktape configuration, try to use the default configuration (if possible). If that works, try to pin down the problem to a specific configuration option.

• If you're running with a custom/embedded libc, ensure that your math support is fully IEEE compliant. In particular, if you need replacements for missing math functions, check that at least the following work correctly (these are used by Duktape internals, not just the Math built-in):

• fmod()

• floor()