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

   1 // RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t
   2 // RUN: %clang_cl_asan %LD %Od %s %Fe%t.dll
   3 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
   4
   5 #include <stdio.h>
   6 #include <string.h>
   7
   8 void call_memcpy(void* (*f)(void *, const void *, size_t),
   9                  void *a, const void *b, size_t c) {
  10   f(a, b, c);
  11 }
  12
  13 extern "C" __declspec(dllexport)
  14 int test_function() {
  15   char buff1[6] = "Hello", buff2[5];
  16
  17   call_memcpy(&memcpy, buff2, buff1, 5);
  18   if (buff1[2] != buff2[2])
  19     return 2;
  20   printf("Initial test OK\n");
  21   fflush(0);
  22 // CHECK: Initial test OK
  23
  24   call_memcpy(&memcpy, buff2, buff1, 6);
  25 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
  26 // CHECK: WRITE of size 6 at [[ADDR]] thread T0
  27 // CHECK-NEXT:  mem{{.*}}
  28 // CHECK-NEXT:  call_memcpy
  29 // CHECK-NEXT:  test_function {{.*}}dll_intercept_memcpy_indirect.cpp:[[@LINE-5]]
  30 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame
  31 // CHECK-NEXT:  test_function {{.*}}dll_intercept_memcpy_indirect.cpp
  32 // CHECK: 'buff2'{{.*}} <== Memory access at offset {{.*}} overflows this variable
  33   return 0;
  34 }