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

   1 // RUN: %clang_cl_asan %Od %p/dll_host.cpp %Fe%t
   2 // RUN: %clang_cl_asan -Wno-fortify-source %LD %Od %s %Fe%t.dll
   3 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
   4
   5 // Test that it works correctly even with ICF enabled.
   6 // RUN: %clang_cl_asan -Wno-fortify-source %LD %Od %s %Fe%t.dll \
   7 // RUN:   %if target={{.*-windows-gnu}} %{ -Wl,--gc-sections,--icf=all %} \
   8 // RUN:   %else %{ -link /OPT:REF /OPT:ICF %}
   9 // RUN: not %run %t %t.dll 2>&1 | FileCheck %s
  10
  11 #include <stdio.h>
  12 #include <string.h>
  13
  14 extern "C" __declspec(dllexport)
  15 int test_function() {
  16   char buff1[6] = "Hello", buff2[5];
  17
  18   memcpy(buff2, buff1, 5);
  19   if (buff1[2] != buff2[2])
  20     return 2;
  21   printf("Initial test OK\n");
  22   fflush(0);
  23 // CHECK: Initial test OK
  24
  25   memcpy(buff2, buff1, 6);
  26 // CHECK: AddressSanitizer: stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
  27 // CHECK: WRITE of size 6 at [[ADDR]] thread T0
  28 // CHECK-NEXT:  __asan_{{.*}}memcpy
  29 // CHECK-NEXT:  test_function {{.*}}dll_intercept_memcpy.cpp:[[@LINE-4]]
  30 // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset {{.*}} in frame
  31 // CHECK-NEXT:  test_function {{.*}}dll_intercept_memcpy.cpp
  32 // CHECK: 'buff2'{{.*}} <== Memory access at offset {{.*}} overflows this variable
  33   return 0;
  34 }