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// RUN: %clangxx -O0 -g %s -o %t && %run %t 2>&1 | FileCheck %s
//
// UNSUPPORTED: linux, darwin, solaris
#include <cstdlib>
#include <ctime>
#include <cstdio>
#include <inttypes.h>
void print_buf(unsigned char *buf, size_t buflen) {
printf("buf '");
for (auto i = 0; i < buflen; i ++)
printf("%" PRIx8, buf[i]);
printf("'\n");
}
void test_seed() {
time_t now = ::time(nullptr);
arc4random_addrandom((unsigned char *)&now, sizeof(now));
}
void test_arc4random() {
printf("test_arc4random\n");
auto i = arc4random();
print_buf((unsigned char *)&i, sizeof(i));
}
void test_arc4random_uniform() {
printf("test_arc4random_uniform\n");
auto i = arc4random_uniform(1024);
print_buf((unsigned char *)&i, sizeof(i));
}
void test_arc4random_buf10() {
printf("test_arc4random_buf10\n");
char buf[10];
arc4random_stir();
arc4random_buf(buf, sizeof(buf));
print_buf((unsigned char *)buf, sizeof(buf));
}
void test_arc4random_buf256() {
printf("test_arc4random_buf256\n");
char buf[256];
arc4random_stir();
arc4random_buf(buf, sizeof(buf));
print_buf((unsigned char *)buf, sizeof(buf));
}
int main(void) {
test_seed();
test_arc4random();
test_arc4random_buf10();
test_arc4random_buf256();
return 0;
// CHECK: test_arc4random
// CHECK: buf '{{.*}}'
// CHECK: test_arc4random_buf10
// CHECK: buf '{{.*}}'
// CHECK: test_arc4random_buf256
// CHECK: buf '{{.*}}'
}
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