compiler-rt/test/lsan/TestCases/use_unaligned.cpp

   1 // Test that unaligned pointers are detected correctly.
   2 // RUN: %clangxx_lsan %s -o %t
   3 // RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0:use_unaligned=0" not %run %t 2>&1 | FileCheck %s
   4 // RUN: %env_lsan_opts="report_objects=1:use_stacks=0:use_registers=0:use_unaligned=1" %run %t 2>&1
   5
   6 #include <stdio.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include "sanitizer_common/print_address.h"
  10
  11 void *arr[2];
  12
  13 int main() {
  14   void *p = malloc(1337);
  15   print_address("Test alloc: ", 1, p);
  16   char *char_arr = (char *)arr;
  17   memcpy(char_arr + 1, &p, sizeof(p));
  18   return 0;
  19 }
  20 // CHECK: Test alloc: [[ADDR:0x[0-9,a-f]+]]
  21 // CHECK: LeakSanitizer: detected memory leaks
  22 // CHECK: [[ADDR]] (1337 bytes)
  23 // CHECK: SUMMARY: {{.*}}Sanitizer: