compiler-rt/test/asan/TestCases/leaks.cpp

   1 // Test for LeakSanitizer+AddressSanitizer of different sizes.
   2 // REQUIRES: leak-detection
   3 //
   4 // RUN: %clangxx_asan -O0 %s -o %t
   5 // RUN: not %run %t 0 2>&1 | FileCheck %s
   6 // RUN: not %run %t 1 2>&1 | FileCheck %s
   7 // RUN: not %run %t 1000 2>&1 | FileCheck %s
   8 // RUN: not %run %t 1000000 2>&1 | FileCheck %s
   9
  10 #include <cstdlib>
  11 #include <thread>
  12
  13 __attribute__((noopt)) void leak(int n) {
  14 #if defined(__ANDROID__) || defined(__BIONIC__)
  15   // Bionic does not acutally allocate when n==0, hence
  16   // there would not be a leak.
  17   // Re-adjust n so the test can pass.
  18   if (n == 0)
  19     n = 1;
  20 #endif
  21
  22   // Repeat few times to make sure that at least one pointer is
  23   // not somewhere on the stack.
  24   for (int i = 0; i < 10; ++i) {
  25     volatile int *t = new int[n];
  26     t = nullptr;
  27   }
  28 }
  29
  30 int main(int argc, char **argv) {
  31   leak(atoi(argv[1]));
  32 }
  33 // CHECK: LeakSanitizer: detected memory leaks