WARNING with gcc ASAN

[xiaocj]

I created a test sample and ran it with GCC Address Sanitizer. It reported a warning upon exit. Could you please take a look? Thank you!

test.c

#define MINICORO_IMPL
#include "minicoro.h"
#include <stdio.h>

// Coroutine entry function.
void coro_entry(mco_coro* co) {
  printf("coroutine 1\n");
  mco_yield(co);
  printf("coroutine 2\n");
}

int main() {
  mco_coro* co;
  mco_desc desc = mco_desc_init(coro_entry, 0);
  mco_result res = mco_create(&co, &desc);

  res = mco_resume(co); // Should print "coroutine 1".

  res = mco_destroy(co);
  exit(0);
}

Build and run:

# gcc -fsanitize=address -fno-sanitize-recover=all -fno-omit-frame-pointer test.c
# ./a.out 
coroutine 1
==3017550==WARNING: ASan is ignoring requested __asan_handle_no_return: stack type: default top: 0x53000000e910; bottom 0x7ffc9c9f7000; size: 0xffffd30363617910 (-49463471015664)
False positive error reports may follow
For details see https://github.com/google/sanitizers/issues/189

If I change the last line of the code in main function from "exit(0)" to "return 0", everything works fine.