A compiler from Rust to C, and a checker for unsafe code
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README.md

Dependencies

Crust runs only on 64-bit Linux.

Environment

After compiling the version of Rust indicated above:

  • Add /path/to/rust/x86_64-.../stage2/bin to $PATH
  • Add /path/to/rust/x86_64-.../stage2/lib to $LD_LIBRARY_PATH

Also, add a symlink to the Rust source code in stdlib_tests/:

ln -s /path/to/rust/src /path/to/crust/stdlib_tests/src

Finally apply stdlib_tests/patches/eval_panic_fix.patch to the Rust source code. This patch simplifies the panic!() macro to avoid using language features that Crust doesn't support.

Compiling

Run make at the top level.

Running tests

mkdir stdlib_tests_build
cd stdlib_tests_build
mkdir lib ir driver test
# Generate test drivers:
../stdlib_tests/bin/driver.mk test/eval_vec.c
# Run tests:
../stdlib_tests/bin/run_tests.sh test/eval_vec.c
# Report failed tests:
../stdlib_tests/bin/collect_failing.sh

Replace the name eval_vec with the basename of one of the files from crust/stdlib_tests/filters to change which tests are run.

Adding new tests

To test other code from the Rust standard library, create a new .filter file in stdlib_tests/filters, following the format of stdlib_tests/filters/eval_vec.filter. Edit the library and construction lines to reflect the mangled names of the functions you want to test (library set) and functions for constructing the data types of interest (construction set). In general, the mangled name used by Crust is the fully qualified name of the function (as in collections::vec::Vec::<T>::new), with each :: replaced by $.

After creating the filter, follow the instructions above for running tests, replacing eval_vec with the name of the new filter (minus .filter extension).