Squashed 'third_party/rules_rust/' content from commit bf59038ca

git-subtree-dir: third_party/rules_rust
git-subtree-split: bf59038cac11798cbaef9f3bf965bad8182b97fa
Signed-off-by: Brian Silverman <bsilver16384@gmail.com>
Change-Id: I5a20e403203d670df467ea97dde9a4ac40339a8d
diff --git a/examples/ffi/c_calling_rust/main.c b/examples/ffi/c_calling_rust/main.c
new file mode 100644
index 0000000..2a57330
--- /dev/null
+++ b/examples/ffi/c_calling_rust/main.c
@@ -0,0 +1,9 @@
+#include <assert.h>
+#include <stdint.h>
+
+extern int32_t my_favorite_number();
+
+int main(int argc, char** argv) {
+  assert(my_favorite_number() == 4);
+  return 0;
+}