test/sanitizer_common/TestCases/Linux/allocator_returns_null_std.cpp

// Test the behavior of malloc called from std:: when the allocation size
// exceeds the sanitizer's allocator max allowed one.

// RUN: %clangxx -O0 %s -o %t
// RUN: %env_tool_opts=allocator_may_return_null=0 not %run %t 2>&1 | FileCheck %s

// UBSAN has no allocator.
// UNSUPPORTED: ubsan

// REQUIRES: x86_64-target-arch

#include <stdio.h>
#include <stdlib.h>
#include <vector>

int main(int argc, char **argv) {
  // The maximum value of all supported sanitizers (search for
  // kMaxAllowedMallocSize). For ASan + LSan, ASan limit is used.
  constexpr size_t kMaxAllowedMallocSizePlusOne = (1ULL << 40) + 1;

  std::vector<char> v;
  v.resize(kMaxAllowedMallocSizePlusOne);

  fprintf(stderr, "x: %lx\n", (long)v.data());

  return 0;
}

// CHECK: #{{[0-9]+.*}}allocator_returns_null_std.cpp
// CHECK: {{SUMMARY: .*Sanitizer: allocation-size-too-big.*allocator_returns_null_std.cpp.*}} in main