compiler-rt/test/hwasan/TestCases/malloc_bisect.c

   1 // RUN: %clang_hwasan -O0 %s -o %t
   2 // RUN: %env_hwasan_opts=malloc_bisect_left=0,malloc_bisect_right=0          not %run %t 2>&1 | \
   3 // RUN:     FileCheck %s --check-prefix=CRASH
   4 // RUN: %env_hwasan_opts=malloc_bisect_left=1000,malloc_bisect_right=999         %run %t 2>&1
   5 // RUN: %env_hwasan_opts=malloc_bisect_left=0,malloc_bisect_right=4294967295 not %run %t 2>&1 | \
   6 // RUN:     FileCheck %s --check-prefix=CRASH
   7 // RUN: %env_hwasan_opts=malloc_bisect_left=0,malloc_bisect_right=4294967295,malloc_bisect_dump=1 not %run %t 2>&1 | \
   8 // RUN:     FileCheck %s --check-prefixes=CRASH,DUMP
   9
  10 #include <stdlib.h>
  11 #include <stdio.h>
  12 #include <sanitizer/hwasan_interface.h>
  13
  14 int main() {
  15   __hwasan_enable_allocator_tagging();
  16   // DUMP: [alloc] {{.*}} 10{{$}}
  17   // DUMP: in main{{.*}}malloc_bisect.c
  18   char * volatile p = (char*)malloc(10);
  19   // CRASH: HWAddressSanitizer: tag-mismatch on address
  20   // CRASH: in main{{.*}}malloc_bisect.c
  21   char volatile x = p[16];
  22   free(p);
  23   __hwasan_disable_allocator_tagging();
  24
  25   return 0;
  26 }