compiler-rt/test/hwasan/TestCases/Linux/vfork.c

   1 // https://github.com/google/sanitizers/issues/925
   2 // RUN: %clang_hwasan -O0 %s -o %t && %run %t 2>&1
   3
   4 // REQUIRES: aarch64-target-arch || x86_64-target-arch || riscv64-target-arch
   5 // REQUIRES: pointer-tagging
   6
   7 #include <assert.h>
   8 #include <sys/types.h>
   9 #include <sys/wait.h>
  10 #include <unistd.h>
  11 #include <stdio.h>
  12 #include <sanitizer/hwasan_interface.h>
  13
  14 __attribute__((noinline, no_sanitize("hwaddress"))) void child() {
  15   char x[10000];
  16   __hwasan_tag_memory(x, 0xAA, sizeof(x));
  17   _exit(0);
  18 }
  19
  20 __attribute__((noinline, no_sanitize("hwaddress"))) void parent() {
  21   char x[10000];
  22   __hwasan_print_shadow(&x, sizeof(x));
  23   assert(__hwasan_test_shadow(x, sizeof(x)) == -1);
  24 }
  25
  26 int main(int argc, char **argv) {
  27   if (vfork())
  28     parent();
  29   else
  30     child();
  31
  32   return 0;
  33 }