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

   1 // RUN: %clangxx_asan %s -o %t
   2 // RUN: not %run %t 2>&1 | FileCheck %s
   3 // REQUIRES: asan-64-bits
   4
   5 #include <inttypes.h>
   6 #include <stdarg.h>
   7 #include <stdint.h>
   8 #include <stdio.h>
   9 #include <string.h>
  10
  11 int main() {
  12   char *p = new char;
  13   char *dest = new char;
  14   const size_t offset = 0x4567890123456789;
  15
  16   // The output here needs to match the output from the sanitizer runtime,
  17   // which includes 0x and prints hex in lower case.
  18   //
  19   // On Windows, %p omits %0x and prints hex characters in upper case,
  20   // so we use PRIxPTR instead of %p.
  21   fprintf(stderr, "Expected bad addr: %#" PRIxPTR "\n",
  22           reinterpret_cast<uintptr_t>(p + offset));
  23   // Flush it so the output came out before the asan report.
  24   fflush(stderr);
  25
  26   memmove(dest, p, offset);
  27   return 0;
  28 }
  29
  30 // CHECK: Expected bad addr: [[ADDR:0x[0-9,a-f]+]]
  31 // CHECK: AddressSanitizer: unknown-crash on address [[ADDR]]
  32 // CHECK: Address [[ADDR]] is a wild pointer inside of access range of size 0x4567890123456789