Safe mode: Difference between revisions

=={{header|Wren}}==

Wren code is considered to be 'safe' in itself. Method/function calls are dynamically checked and generate runtime errors which can be caught and handled. A fiber's stack grows if it gets close to overflowing. There is no support for pointers nor reflection and memory is managed automatically by the runtime.

However, when Wren is embedded in a host application, one needs to deal with the embedding API (or a wrapper thereof) to pass data between Wren and the host. The embedding API is written in C and, as such, is intrinsically unsafe. It is generally up to the programmer to ensure that API functions are passed the correct number of arguments and those arguments are of the correct types.