diff options
| -rw-r--r-- | include/ec_commands.h | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/include/ec_commands.h b/include/ec_commands.h index 27a3ca1bd5..ad8a8d75f3 100644 --- a/include/ec_commands.h +++ b/include/ec_commands.h @@ -1921,10 +1921,19 @@ struct ec_params_rand_num { } __ec_align4; struct ec_response_rand_num { - uint8_t rand[0]; /**< generated random numbers */ -} __ec_align4; + /** + * generated random numbers in the range of 1 to EC_MAX_INSIZE. The size + * of this is set to 1 in order to support C++ compilation. The true + * size of rand is determined by ec_params_rand_num's num_rand_bytes. + */ + uint8_t rand[1]; +} __ec_align1; -BUILD_ASSERT(sizeof(struct ec_response_rand_num) == 0); +/* C++ requires all structs to be at least 1 byte long. Since struct + * ec_response_rand_num will never be used with num_rand_bytes == 0 (from + * ec_params_rand_num) it is set to always be at least 1. + */ +BUILD_ASSERT(sizeof(struct ec_response_rand_num) == 1); /** * Get information about the key used to sign the RW firmware. |