changed int main() to int main(void)

to make it standard C compliant

src/kex_rlwe_newhope/avx2/test/speed.c

@@ -49,7 +49,7 @@ static void print_results(const char *s, unsigned long long *t, size_t tlen)
 
 unsigned long long t[NTESTS];
 
-int main()
+int main(void)
 {
   poly sk_a;
   unsigned char key_a[32], key_b[32];

src/kex_rlwe_newhope/avx2/test/test_newhope.c

@@ -112,7 +112,7 @@ int test_invalid_ciphertext()
 }
 
 
-int main(){
+int main(void){
 
   test_keys();
   test_invalid_sk_a();

src/kex_rlwe_newhope/avx2/test/test_statistical.c

@@ -38,7 +38,7 @@ static int hamming32(const unsigned char *k)
   return r;
 }
 
-int main()
+int main(void)
 {
   poly sk_a;
   unsigned char key_b[32];

src/sig/test_sig.c

@@ -321,7 +321,7 @@ cleanup:
 	return (success == OQS_SUCCESS) ? EXIT_SUCCESS : EXIT_FAILURE;
 }
 #else // !ENABLE_SIG_PICNIC
-int main() {
+int main(void) {
 	printf("No signature algorithm available. Make sure configure was run properly; see Readme.md.\n");
 	return EXIT_FAILURE;
 }

src/sig_picnic/external/cmake/check-simd.c

@@ -39,6 +39,6 @@ void test(void) {
 }
 #endif
 
-int main() {
+int main(void) {
   test();
 }

src/sig_picnic/external/tests/api_test.c

@@ -3,7 +3,7 @@
 #include <stdio.h>
 #include <string.h>
 
-int main() {
+int main(void) {
   unsigned char pk[CRYPTO_PUBLICKEYBYTES]          = {0};
   unsigned char sk[CRYPTO_SECRETKEYBYTES]          = {0};
   const unsigned char message[50]                  = {0};

src/sig_picnic/external/tests/bitstream_test.c

@@ -131,7 +131,7 @@ static int test_multiple_30(void) {
   return ret;
 }
 
-int main() {
+int main(void) {
   int ret = 0;
 
   int tmp = simple_test();

src/sig_picnic/external/tests/extended_picnic_test.c

@@ -76,7 +76,7 @@ static int picnic_test_with_read_write(picnic_params_t parameters) {
   return 0;
 }
 
-int main() {
+int main(void) {
   int ret = 0;
   for (picnic_params_t params = 1; params < PARAMETER_SET_MAX_INDEX; params++) {
     if (picnic_test_with_read_write(params)) {

src/sig_picnic/external/tests/hmac_sha256_test.c

@@ -1,6 +1,6 @@
 #include "../randomness.h"
 
-int main() {
+int main(void) {
 
   unsigned int ret_val = 0;
   unsigned char dst[32];

src/sig_picnic/external/tests/hmac_sha384_test.c

@@ -1,6 +1,6 @@
 #include "../randomness.h"
 
-int main() {
+int main(void) {
 
   unsigned int ret_val = 0;
   unsigned char dst[48];

src/sig_picnic/external/tests/hmac_sha512_test.c

@@ -1,6 +1,6 @@
 #include "../randomness.h"
 
-int main() {
+int main(void) {
 
   unsigned int ret_val = 0;
   unsigned char dst[64];

src/sig_picnic/external/tests/kdf_shake256_test.c

@@ -1,6 +1,6 @@
 #include "../kdf_shake.h"
 
-int main() {
+int main(void) {
   const uint8_t key[] = {0xab, 0xcd};
 
   kdf_shake_t ctx;

src/sig_picnic/external/tests/lowmc_test.c

@@ -148,7 +148,7 @@ static const struct {
 
 static const size_t num_tests = sizeof(tests) / sizeof(tests[0]);
 
-int main() {
+int main(void) {
   int ret = 0;
   for (size_t s = 0; s < num_str_tests; ++s) {
     const int t = lowmc_enc_str(str_tests[s].param, str_tests[s].key, str_tests[s].plaintext,

src/sig_picnic/external/tests/mpc_test.c

@@ -86,7 +86,7 @@ void run_tests(void) {
   test_mpc_add();
 }
 
-int main() {
+int main(void) {
   run_tests();
 
   return 0;

src/sig_picnic/external/tests/mzd_test.c

@@ -429,7 +429,7 @@ static void test_mzd_shift(void) {
 #endif
 }
 
-int main() {
+int main(void) {
   test_mzd_local_equal();
   test_mzd_mul();
   test_mzd_mul_avx();

src/sig_picnic/external/tests/picnic_test.c

@@ -58,7 +58,7 @@ static int picnic_sign_verify(const picnic_params_t param) {
   return ret;
 }
 
-int main() {
+int main(void) {
   int ret = 0;
   for (unsigned int param = Picnic_L1_FS; param < PARAMETER_SET_MAX_INDEX; ++param) {
     printf("testing: %d ... ", param);

src/sig_picnic/external/tools/example.c

@@ -127,7 +127,7 @@ int picnicExample(picnic_params_t parameters) {
   return 0;
 }
 
-int main() {
+int main(void) {
   for (picnic_params_t params = 1; params < PARAMETER_SET_MAX_INDEX; params++) {
     picnicExample(params);
   }