compiler-rt/test/asan/TestCases/Windows/dll_unload.cpp

   1 #include <stdio.h>
   2 #include <windows.h>
   3
   4 // RUN: %clang_cl_asan %LD %Od -DDLL %s %Fe%t.dll
   5 // RUN: %clang_cl %Od -DEXE %s %Fe%te.exe
   6 // RUN: %env_asan_opts=windows_hook_rtl_allocators=true not %run %te.exe %t.dll 2>&1 | FileCheck %s
   7 // REQUIRES: asan-dynamic-runtime
   8 // REQUIRES: asan-32-bits
   9
  10 #include <cassert>
  11 #include <stdio.h>
  12 #include <windows.h>
  13 extern "C" {
  14 #if defined(EXE)
  15
  16 int main(int argc, char **argv) {
  17   void *region_without_hooks = HeapAlloc(GetProcessHeap(), 0, 10);
  18   HMODULE lib = LoadLibraryA(argv[1]);
  19   assert(lib != INVALID_HANDLE_VALUE);
  20
  21   void *region_w_hooks = HeapAlloc(GetProcessHeap(), 0, 10);
  22   assert(region_w_hooks != nullptr);
  23   assert(0 != FreeLibrary(lib));
  24
  25   fprintf(stderr, "WITHOUT:0x%08x\n", (unsigned int)region_without_hooks);
  26   fprintf(stderr, "WITH:0x%08x\n", (unsigned int)region_w_hooks);
  27
  28   assert(0 != HeapFree(GetProcessHeap(), 0, region_without_hooks));
  29   assert(0 != HeapFree(GetProcessHeap(), 0, region_w_hooks));
  30
  31   HeapFree(GetProcessHeap(), 0, region_w_hooks); //will dump
  32 }
  33 #elif defined(DLL)
  34 // This global is registered at startup.
  35
  36 BOOL WINAPI DllMain(HMODULE, DWORD reason, LPVOID) {
  37   fprintf(stderr, "in DLL(reason=%d)\n", (int)reason);
  38   fflush(0);
  39   return TRUE;
  40 }
  41
  42 // CHECK: in DLL(reason=1)
  43 // CHECK: in DLL(reason=0)
  44 // CHECK: WITHOUT:[[WITHOUT:0x[0-9a-fA-F]+]]
  45 // CHECK: WITH:[[WITH:0x[0-9a-fA-F]+]]
  46 // CHECK: AddressSanitizer: attempting double-free on [[WITH]] in thread T0:
  47
  48 #else
  49 #error oops!
  50 #endif
  51 }