compiler-rt/test/ubsan/TestCases/Pointer/nullptr-and-nonzero-offset-summary.cpp

   1 // RUN: %clang -x c -fsanitize=pointer-overflow %s -o %t
   2 // RUN: %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-NOTYPE
   3 // RUN: %env_ubsan_opts=report_error_type=1 %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-TYPE
   4
   5 // RUN: %clangxx -fsanitize=pointer-overflow %s -o %t
   6 // RUN: %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-NOTYPE
   7 // RUN: %env_ubsan_opts=report_error_type=1 %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK-TYPE
   8
   9 #include <stdlib.h>
  10
  11 int main(int argc, char *argv[]) {
  12   char *base, *result;
  13
  14   base = (char *)0;
  15   result = base + 0;
  16   // CHECK-NOTYPE-NOT: SUMMARY:
  17   // CHECK-TYPE-NOT: SUMMARY:
  18
  19   base = (char *)0;
  20   result = base + 1;
  21   // CHECK-NOTYPE: SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior {{.*}}summary.cpp:[[@LINE-1]]:17
  22   // CHECK-TYPE: SUMMARY: UndefinedBehaviorSanitizer: nullptr-with-nonzero-offset {{.*}}summary.cpp:[[@LINE-2]]:17
  23
  24   base = (char *)1;
  25   result = base - 1;
  26   // CHECK-NOTYPE: SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior {{.*}}summary.cpp:[[@LINE-1]]:17
  27   // CHECK-TYPE: SUMMARY: UndefinedBehaviorSanitizer: nullptr-after-nonzero-offset {{.*}}summary.cpp:[[@LINE-2]]:17
  28
  29   return 0;
  30 }