compiler-rt/test/asan/TestCases/global-location.cpp

   1 // RUN: %clangxx_asan -g -O2 %s -o %t
   2 // RUN: not %run %t g 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=GLOB
   3 // RUN: not %run %t c 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=CLASS_STATIC
   4 // RUN: not %run %t f 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=FUNC_STATIC
   5 // RUN: not %run %t l 2>&1 | FileCheck %s --check-prefix=CHECK --check-prefix=LITERAL
   6
   7 // COFF doesn't support debuginfo for globals. For the non-debuginfo tests, see global-location-nodebug.cpp.
   8 // XFAIL: target={{.*windows-msvc.*}}
   9
  10 // FIXME: Investigate failure on MinGW
  11 // XFAIL: target={{.*-windows-gnu}}
  12
  13 // atos doesn't show source line numbers for global variables.
  14 // UNSUPPORTED: darwin
  15
  16 // CHECK: AddressSanitizer: global-buffer-overflow
  17
  18 #include <string.h>
  19
  20 struct C {
  21   static int array[10];
  22   // CLASS_STATIC:      0x{{.*}} is located 4 bytes after global variable 'C::array' defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 40
  23 };
  24
  25 int global[10];
  26 // GLOB:      0x{{.*}} is located 4 bytes after global variable 'global' defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 40
  27 int C::array[10];
  28
  29 int main(int argc, char **argv) {
  30   int one = argc - 1;
  31   switch (argv[1][0]) {
  32   case 'g': return global[one * 11];
  33   case 'c': return C::array[one * 11];
  34   case 'f':
  35     static int array[10];
  36     // FUNC_STATIC:      0x{{.*}} is located 4 bytes after global variable 'main::array' defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 40
  37     memset(array, 0, 10);
  38     return array[one * 11];
  39   case 'l':
  40     const char *str = "0123456789";
  41     // LITERAL:      0x{{.*}} is located 0 bytes after global variable {{.*}} defined in '{{.*}}global-location.cpp:[[@LINE-1]]' {{.*}} of size 11
  42     return str[one * 11];
  43   }
  44   return 0;
  45 }
  46
  47 // CHECK: SUMMARY: AddressSanitizer: global-buffer-overflow