Static ARGV_INIT_ARRAY 

#[unsafe(link_section = ".init_array.00099")]
static ARGV_INIT_ARRAY: extern "C" fn(c_int, *const *const u8, *const *const u8)

Available on Linux and GNU and (Linux or Android or FreeBSD or DragonFly BSD or NetBSD or OpenBSD or Cygwin or Solaris or illumos or Emscripten or Haiku or HermitCore or L4Re or Fuchsia or Redox or target_os=vxworks or target_os=horizon or target_os=aix or target_os=nto or target_os=hurd or target_os=rtems or target_os=nuttx) only.

glibc passes argc, argv, and envp to functions in .init_array, as a non-standard extension. This allows std::env::args to work even in a cdylib, as it does on macOS and Windows.