compiler-rt/test/ubsan/TestCases/Misc/bounds.cpp

   1 // RUN: %clangxx -fsanitize=bounds %s -O3 -o %t
   2 // RUN: %run %t 0 0 0
   3 // RUN: %run %t 1 2 3
   4 // RUN: %expect_crash %run %t 2 0 0 2>&1 | FileCheck %s --check-prefix=CHECK-A-2
   5 // RUN: %run %t 0 3 0 2>&1 | FileCheck %s --check-prefix=CHECK-B-3
   6 // RUN: %run %t 0 0 4 2>&1 | FileCheck %s --check-prefix=CHECK-C-4
   7
   8 int get_int(int *const p __attribute__((pass_object_size(0))), int i) {
   9   // CHECK-A-2: bounds.cpp:[[@LINE+1]]:10: runtime error: index 2 out of bounds for type 'int *'
  10   return p[i];
  11 }
  12
  13 int get_double(double *const p __attribute__((pass_object_size(0))), int i) {
  14   // CHECK-A-2: bounds.cpp:[[@LINE+1]]:10: runtime error: index 2 out of bounds for type 'double *'
  15   return p[i];
  16 }
  17
  18 int main(int argc, char **argv) {
  19   int bar[2];
  20   get_int(bar, argv[1][0] - '0');
  21
  22   double baz[2];
  23   get_double(baz, argv[1][0] - '0');
  24
  25   int arr[2][3][4] = {};
  26
  27   return arr[argv[1][0] - '0'][argv[2][0] - '0'][argv[3][0] - '0'];
  28   // CHECK-A-2: bounds.cpp:[[@LINE-1]]:10: runtime error: index 2 out of bounds for type 'int[2][3][4]'
  29   // CHECK-B-3: bounds.cpp:[[@LINE-2]]:10: runtime error: index 3 out of bounds for type 'int[3][4]'
  30   // CHECK-C-4: bounds.cpp:[[@LINE-3]]:10: runtime error: index 4 out of bounds for type 'int[4]'
  31 }