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

   1 // Checks that the debugging API returns correct shadow scale and offset.
   2 // RUN: %clangxx_asan -O %s -o %t
   3 // RUN: %env_asan_opts=verbosity=1 %run %t 2>&1 | FileCheck %s
   4
   5 #include <sanitizer/asan_interface.h>
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8
   9 #if _WIN64
  10 #define PTR "%llx"
  11 #else
  12 #define PTR "%lx"
  13 #endif
  14
  15 // printed because of verbosity=1
  16 // CHECK: SHADOW_SCALE: [[SCALE:[0-9]+]]
  17 // CHECK: SHADOW_OFFSET: [[OFFSET:0x[0-9a-f]+]]
  18
  19 int main() {
  20   size_t scale, offset;
  21   __asan_get_shadow_mapping(&scale, &offset);
  22
  23   fprintf(stderr, "scale: %d\n", (int)scale);
  24   fprintf(stderr, "offset: 0x" PTR "\n", (void*)offset);
  25
  26   // CHECK: scale: [[SCALE]]
  27   // CHECK: offset: [[OFFSET]]
  28
  29   return 0;
  30 }