compiler-rt/test/sanitizer_common/TestCases/Posix/qsort.cpp

   1 // RUN: %clangxx -O2 %s -o %t
   2
   3 #include <algorithm>
   4 #include <assert.h>
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <vector>
   8
   9 static int compare_ints(const void *a, const void *b) {
  10   return *(const int *)b - *(const int *)a;
  11 }
  12
  13 int 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 }