message: Avoid call to memalign()
diff: @@ -1013,7 +1013,15 @@ pub unsafe extern "C" fn valloc(size: size_t) -> *mut c_void {
  /* _SC_PAGESIZE is a c_long and may in principle not convert
  * correctly to a size_t. */
  match size_t::try_from(sysconf(_SC_PAGESIZE)) {
  - Ok(page_size) => memalign(page_size, size),
  + Ok(page_size) => {
  + /* valloc() is not supposed to be able to set errno to
  + * EINVAL, hence no call to memalign(). */
  + let ptr = platform::alloc_align(size, page_size);
  + if ptr.is_null() {
  + platform::errno = errno::ENOMEM;
  + }
  + ptr
  + }
  Err(_) => {
  // A corner case. No errno setting.
  ptr::null_mut()
  