25 lines · cpp
1// RUN: %clangxx -O2 %s -o %t2 3#include <algorithm>4#include <assert.h>5#include <stdio.h>6#include <stdlib.h>7#include <vector>8 9static int compare_ints(const void *a, const void *b) {10 return *(const int *)b - *(const int *)a;11}12 13int main() {14 std::vector<int> nums(100000);15 for (auto &n : nums)16 n = rand();17 18 std::vector<int> to_qsort = nums;19 qsort(to_qsort.data(), to_qsort.size(), sizeof(to_qsort[0]), &compare_ints);20 21 std::sort(nums.begin(), nums.end());22 23 assert(nums == to_qsort);24}25