diff options
Diffstat (limited to 'src/util/support/t_unal.c')
-rw-r--r-- | src/util/support/t_unal.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/src/util/support/t_unal.c b/src/util/support/t_unal.c new file mode 100644 index 0000000000..d9a3cc4b0f --- /dev/null +++ b/src/util/support/t_unal.c @@ -0,0 +1,46 @@ +#undef NDEBUG +#include <assert.h> +#include "k5-platform.h" + +int main () +{ + /* Test some low-level assumptions the Kerberos code depends + on. */ + + union { + UINT64_TYPE n64; + uint32_t n32; + uint16_t n16; + unsigned char b[9]; + } u; + static unsigned char buf[9] = { 0, 1, 2, 3, 4, 5, 6, 7, 8 }; + + assert(load_64_be(buf+1) == 0x0102030405060708LL); + assert(load_64_le(buf+1) == 0x0807060504030201LL); + assert(load_32_le(buf+2) == 0x05040302); + assert(load_32_be(buf+2) == 0x02030405); + assert(load_16_be(buf+3) == 0x0304); + assert(load_16_le(buf+3) == 0x0403); + u.b[0] = 0; + assert((store_64_be(0x0102030405060708LL, u.b+1), !memcmp(buf, u.b, 9))); + u.b[1] = 9; + assert((store_64_le(0x0807060504030201LL, u.b+1), !memcmp(buf, u.b, 9))); + u.b[2] = 10; + assert((store_32_be(0x02030405, u.b+2), !memcmp(buf, u.b, 9))); + u.b[3] = 11; + assert((store_32_le(0x05040302, u.b+2), !memcmp(buf, u.b, 9))); + u.b[4] = 12; + assert((store_16_be(0x0304, u.b+3), !memcmp(buf, u.b, 9))); + u.b[4] = 13; + assert((store_16_le(0x0403, u.b+3), !memcmp(buf, u.b, 9))); + /* Verify that load_*_n properly does native format. Assume + the unaligned thing is okay. */ + u.n64 = 0x090a0b0c0d0e0f00LL; + assert(load_64_n((unsigned char *) &u.n64) == 0x090a0b0c0d0e0f00LL); + u.n32 = 0x06070809; + assert(load_32_n((unsigned char *) &u.n32) == 0x06070809); + u.n16 = 0x0a0b; + assert(load_16_n((unsigned char *) &u.n16) == 0x0a0b); + + return 0; +} |