diff options
author | Justus Winter <justus@sequoia-pgp.org> | 2019-01-22 17:54:48 +0100 |
---|---|---|
committer | Justus Winter <justus@sequoia-pgp.org> | 2019-01-25 14:04:26 +0100 |
commit | 118a86b0302b4bb35b1f1bbef50b2a042f239384 (patch) | |
tree | b447470674dc3aea5bf6c6d32a17ca62d438e125 /openpgp-ffi/examples/type-safety-demo.c | |
parent | 64a7fa27f669b0dd31319a5ebee6ffd0de410336 (diff) |
ffi-macros: Check wrapper types at runtime.
- This change adds a tag to the derived wrapper types that identify
the type of the wrapped value.
- At runtime, we can verify that references to wrapper objects
indeed carry the right tag.
- Fixes #166.
Diffstat (limited to 'openpgp-ffi/examples/type-safety-demo.c')
-rw-r--r-- | openpgp-ffi/examples/type-safety-demo.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/openpgp-ffi/examples/type-safety-demo.c b/openpgp-ffi/examples/type-safety-demo.c new file mode 100644 index 00000000..ad4870e2 --- /dev/null +++ b/openpgp-ffi/examples/type-safety-demo.c @@ -0,0 +1,28 @@ +#define _GNU_SOURCE +#include <errno.h> +#include <error.h> +#include <fcntl.h> +#include <stdio.h> +#include <stdlib.h> +#include <sys/mman.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <unistd.h> + +#include <sequoia/openpgp.h> + +int +main (int argc, char **argv) +{ + pgp_keyid_t keyid = pgp_keyid_from_hex ("BBBBBBBBBBBBBBBB"); + + // Let's violate The Rules and forge a reference! + pgp_fingerprint_t fingerprint = (pgp_fingerprint_t) keyid; + + // And use it! + printf ("%s", pgp_fingerprint_to_string (fingerprint)); + + // Always clean up though. + pgp_keyid_free (keyid); + return 0; +} |