printf("Plaintext:\n");
BIO_dump_fp(stdout, outbuf, outlen);
/* Set expected tag value. */
- EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag), gcm_tag);
+ EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_AEAD_SET_TAG, sizeof(gcm_tag),
+ (void *)gcm_tag);
/* Finalise: note get no output for GCM */
rv = EVP_DecryptFinal_ex(ctx, outbuf, &outlen);
/*