compiler-rt/test/asan/TestCases/Linux/vfork.cpp

   1 // https://github.com/google/sanitizers/issues/925
   2 // RUN: %clang_asan -O0 %s -o %t && %run %t 2>&1
   3
   4 // REQUIRES: aarch64-target-arch || x86_64-target-arch || i386-target-arch || arm-target-arch || riscv64-target-arch || loongarch64-target-arch
   5
   6 #include <assert.h>
   7 #include <sys/types.h>
   8 #include <sys/wait.h>
   9 #include <unistd.h>
  10 #include <stdio.h>
  11 #include <sanitizer/asan_interface.h>
  12
  13 __attribute__((noinline, no_sanitize("address"))) void child() {
  14   alignas(8) char x[100000];
  15   __asan_poison_memory_region(x, sizeof(x));
  16   _exit(0);
  17 }
  18
  19 __attribute__((noinline, no_sanitize("address"))) void parent() {
  20   alignas(8) char x[100000];
  21   assert(__asan_address_is_poisoned(x + 5000) == 0);
  22 }
  23
  24 int main(int argc, char **argv) {
  25   if (vfork())
  26     parent();
  27   else
  28     child();
  29
  30   return 0;
  31 }