compiler-rt/test/ubsan_minimal/TestCases/nullptr-and-nonzero-offset.c

   1 // RUN: %clang   -fsanitize=pointer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-C --implicit-check-not="pointer-overflow"
   2 // RUN: %clangxx -x c++ -fsanitize=pointer-overflow %s -o %t && %run %t 2>&1 | FileCheck %s --check-prefixes=CHECK,CHECK-CPP --implicit-check-not="pointer-overflow"
   3
   4 #include <stdlib.h>
   5
   6 int main(int argc, char *argv[]) {
   7   char *base, *result;
   8
   9   base = (char *)0;
  10   result = base + 0;
  11   // CHECK-C: pointer-overflow by 0x{{[[:xdigit:]]+$}}
  12   // CHECK-CPP-NOT: pointer-overflow
  13
  14   base = (char *)0;
  15   result = base + 1;
  16   // CHECK: pointer-overflow by 0x{{[[:xdigit:]]+$}}
  17
  18   base = (char *)1;
  19   result = base - 1;
  20   // CHECK: pointer-overflow by 0x{{[[:xdigit:]]+$}}
  21
  22   return 0;
  23 }