shrektan / rrustpanic

a test R package to check the Rust panic gets properly handled

r rust panic

A test package to check that the panic in Rust gets properly handdled:

1. The destructor (Drop trait) is executed when panic occurs;
2. The error message is converted into R's error message (into the R's strerr stream).

How to start

1. You need to change the src/rust/Cargo.toml, where must change th local "extendr-api" cargo library path.
2. (Probably needed, terminal) cd src/rust then cargo clean to force the cargo library to rebuild.
3. (R) Run rextendr::document() then run(0L) for the non-throwing code, run(0.0) fo the throwing code.
4. (Probably needed, R) Run pkgbuild::clean_dll() to clean up the existing DLL files. This occationally needed as when you only touched the extendr library, the rextendr::document() may not re-generate the compiled files as it thinks all the source files are unchanged.

Reference

• The discussion on extendr: extendr/extendr#278 (comment)