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    //! C definitions used by libnative that don't belong in liblibc

    #![allow(nonstandard_style)]
    #![cfg_attr(test, allow(dead_code))]
    #![unstable(issue = "0", feature = "windows_c")]

    use crate::os::raw::{c_int, c_uint, c_ulong, c_long, c_longlong, c_ushort, c_char};
    #[cfg(target_arch = "x86_64")]
    use crate::os::raw::c_ulonglong;
    use crate::ptr;

    use libc::{wchar_t, size_t, c_void};

    pub use self::FILE_INFO_BY_HANDLE_CLASS::*;
    pub use self::EXCEPTION_DISPOSITION::*;

    pub type DWORD = c_ulong;
    pub type HANDLE = LPVOID;
    pub type HINSTANCE = HANDLE;
    pub type HMODULE = HINSTANCE;
    pub type HRESULT = LONG;
    pub type BOOL = c_int;
    pub type BYTE = u8;
    pub type BOOLEAN = BYTE;
    pub type GROUP = c_uint;
    pub type LARGE_INTEGER = c_longlong;
    pub type LONG = c_long;
    pub type UINT = c_uint;
    pub type WCHAR = u16;
    pub type USHORT = c_ushort;
    pub type SIZE_T = usize;
    pub type WORD = u16;
    pub type CHAR = c_char;
    pub type ULONG_PTR = usize;
    pub type ULONG = c_ulong;
    #[cfg(target_arch = "x86_64")]
    pub type ULONGLONG = u64;
    #[cfg(target_arch = "x86_64")]
    pub type DWORDLONG = ULONGLONG;

    pub type LPBOOL = *mut BOOL;
    pub type LPBYTE = *mut BYTE;
    pub type LPBY_HANDLE_FILE_INFORMATION = *mut BY_HANDLE_FILE_INFORMATION;
    pub type LPCSTR = *const CHAR;
    pub type LPCVOID = *const c_void;
    pub type LPCWSTR = *const WCHAR;
    pub type LPDWORD = *mut DWORD;
    pub type LPHANDLE = *mut HANDLE;
    pub type LPOVERLAPPED = *mut OVERLAPPED;
    pub type LPPROCESS_INFORMATION = *mut PROCESS_INFORMATION;
    pub type LPSECURITY_ATTRIBUTES = *mut SECURITY_ATTRIBUTES;
    pub type LPSTARTUPINFO = *mut STARTUPINFO;
    pub type LPVOID = *mut c_void;
    pub type LPWCH = *mut WCHAR;
    pub type LPWIN32_FIND_DATAW = *mut WIN32_FIND_DATAW;
    pub type LPWSADATA = *mut WSADATA;
    pub type LPWSAPROTOCOL_INFO = *mut WSAPROTOCOL_INFO;
    pub type LPSTR = *mut CHAR;
    pub type LPWSTR = *mut WCHAR;
    pub type LPFILETIME = *mut FILETIME;
    pub type LPWSABUF = *mut WSABUF;
    pub type LPWSAOVERLAPPED = *mut c_void;
    pub type LPWSAOVERLAPPED_COMPLETION_ROUTINE = *mut c_void;

    pub type PCONDITION_VARIABLE = *mut CONDITION_VARIABLE;
    pub type PLARGE_INTEGER = *mut c_longlong;
    pub type PSRWLOCK = *mut SRWLOCK;

    pub type SOCKET = crate::os::windows::raw::SOCKET;
    pub type socklen_t = c_int;
    pub type ADDRESS_FAMILY = USHORT;

    pub const TRUE: BOOL = 1;
    pub const FALSE: BOOL = 0;

    pub const FILE_ATTRIBUTE_READONLY: DWORD = 0x1;
    pub const FILE_ATTRIBUTE_DIRECTORY: DWORD = 0x10;
    pub const FILE_ATTRIBUTE_REPARSE_POINT: DWORD = 0x400;

    pub const FILE_SHARE_DELETE: DWORD = 0x4;
    pub const FILE_SHARE_READ: DWORD = 0x1;
    pub const FILE_SHARE_WRITE: DWORD = 0x2;

    pub const CREATE_ALWAYS: DWORD = 2;
    pub const CREATE_NEW: DWORD = 1;
    pub const OPEN_ALWAYS: DWORD = 4;
    pub const OPEN_EXISTING: DWORD = 3;
    pub const TRUNCATE_EXISTING: DWORD = 5;

    pub const FILE_WRITE_DATA: DWORD = 0x00000002;
    pub const FILE_APPEND_DATA: DWORD = 0x00000004;
    pub const FILE_WRITE_EA: DWORD = 0x00000010;
    pub const FILE_WRITE_ATTRIBUTES: DWORD = 0x00000100;
    pub const READ_CONTROL: DWORD = 0x00020000;
    pub const SYNCHRONIZE: DWORD = 0x00100000;
    pub const GENERIC_READ: DWORD = 0x80000000;
    pub const GENERIC_WRITE: DWORD = 0x40000000;
    pub const STANDARD_RIGHTS_WRITE: DWORD = READ_CONTROL;
    pub const FILE_GENERIC_WRITE: DWORD = STANDARD_RIGHTS_WRITE | FILE_WRITE_DATA |
                                          FILE_WRITE_ATTRIBUTES |
                                          FILE_WRITE_EA |
                                          FILE_APPEND_DATA |
                                          SYNCHRONIZE;

    pub const FILE_FLAG_OPEN_REPARSE_POINT: DWORD = 0x00200000;
    pub const FILE_FLAG_BACKUP_SEMANTICS: DWORD = 0x02000000;
    pub const SECURITY_SQOS_PRESENT: DWORD = 0x00100000;

    pub const FIONBIO: c_ulong = 0x8004667e;

    #[cfg(target_arch = "arm")]
    const ARM_MAX_BREAKPOINTS: usize = 8;
    #[cfg(target_arch = "arm")]
    const ARM_MAX_WATCHPOINTS: usize = 1;

    #[repr(C)]
    #[derive(Copy)]
    pub struct WIN32_FIND_DATAW {
        pub dwFileAttributes: DWORD,
        pub ftCreationTime: FILETIME,
        pub ftLastAccessTime: FILETIME,
        pub ftLastWriteTime: FILETIME,
        pub nFileSizeHigh: DWORD,
        pub nFileSizeLow: DWORD,
        pub dwReserved0: DWORD,
        pub dwReserved1: DWORD,
        pub cFileName: [wchar_t; 260], // #define MAX_PATH 260
        pub cAlternateFileName: [wchar_t; 14],
    }
    impl Clone for WIN32_FIND_DATAW {
        fn clone(&self) -> Self { *self }
    }

    pub const WSA_FLAG_OVERLAPPED: DWORD = 0x01;

    pub const WSADESCRIPTION_LEN: usize = 256;
    pub const WSASYS_STATUS_LEN: usize = 128;
    pub const WSAPROTOCOL_LEN: DWORD = 255;
    pub const INVALID_SOCKET: SOCKET = !0;

    pub const WSAEACCES: c_int = 10013;
    pub const WSAEINVAL: c_int = 10022;
    pub const WSAEWOULDBLOCK: c_int = 10035;
    pub const WSAEADDRINUSE: c_int = 10048;
    pub const WSAEADDRNOTAVAIL: c_int = 10049;
    pub const WSAECONNABORTED: c_int = 10053;
    pub const WSAECONNRESET: c_int = 10054;
    pub const WSAENOTCONN: c_int = 10057;
    pub const WSAESHUTDOWN: c_int = 10058;
    pub const WSAETIMEDOUT: c_int = 10060;
    pub const WSAECONNREFUSED: c_int = 10061;

    pub const MAX_PROTOCOL_CHAIN: DWORD = 7;

    pub const TOKEN_READ: DWORD = 0x20008;
    pub const MAXIMUM_REPARSE_DATA_BUFFER_SIZE: usize = 16 * 1024;
    pub const FSCTL_GET_REPARSE_POINT: DWORD = 0x900a8;
    pub const IO_REPARSE_TAG_SYMLINK: DWORD = 0xa000000c;
    pub const IO_REPARSE_TAG_MOUNT_POINT: DWORD = 0xa0000003;
    pub const SYMLINK_FLAG_RELATIVE: DWORD = 0x00000001;
    pub const FSCTL_SET_REPARSE_POINT: DWORD = 0x900a4;

    pub const SYMBOLIC_LINK_FLAG_DIRECTORY: DWORD = 0x1;
    pub const SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE: DWORD = 0x2;

    // Note that these are not actually HANDLEs, just values to pass to GetStdHandle
    pub const STD_INPUT_HANDLE: DWORD = -10i32 as DWORD;
    pub const STD_OUTPUT_HANDLE: DWORD = -11i32 as DWORD;
    pub const STD_ERROR_HANDLE: DWORD = -12i32 as DWORD;

    pub const HANDLE_FLAG_INHERIT: DWORD = 0x00000001;

    pub const PROGRESS_CONTINUE: DWORD = 0;

    pub const ERROR_FILE_NOT_FOUND: DWORD = 2;
    pub const ERROR_PATH_NOT_FOUND: DWORD = 3;
    pub const ERROR_ACCESS_DENIED: DWORD = 5;
    pub const ERROR_INVALID_HANDLE: DWORD = 6;
    pub const ERROR_NO_MORE_FILES: DWORD = 18;
    pub const ERROR_HANDLE_EOF: DWORD = 38;
    pub const ERROR_FILE_EXISTS: DWORD = 80;
    pub const ERROR_INVALID_PARAMETER: DWORD = 87;
    pub const ERROR_BROKEN_PIPE: DWORD = 109;
    pub const ERROR_CALL_NOT_IMPLEMENTED: DWORD = 120;
    pub const ERROR_INSUFFICIENT_BUFFER: DWORD = 122;
    pub const ERROR_ALREADY_EXISTS: DWORD = 183;
    pub const ERROR_NO_DATA: DWORD = 232;
    pub const ERROR_ENVVAR_NOT_FOUND: DWORD = 203;
    pub const ERROR_OPERATION_ABORTED: DWORD = 995;
    pub const ERROR_IO_PENDING: DWORD = 997;
    pub const ERROR_TIMEOUT: DWORD = 0x5B4;

    pub const E_NOTIMPL: HRESULT = 0x80004001u32 as HRESULT;

    pub const INVALID_HANDLE_VALUE: HANDLE = !0 as HANDLE;

    pub const FACILITY_NT_BIT: DWORD = 0x1000_0000;

    pub const FORMAT_MESSAGE_FROM_SYSTEM: DWORD = 0x00001000;
    pub const FORMAT_MESSAGE_FROM_HMODULE: DWORD = 0x00000800;
    pub const FORMAT_MESSAGE_IGNORE_INSERTS: DWORD = 0x00000200;

    pub const TLS_OUT_OF_INDEXES: DWORD = 0xFFFFFFFF;

    pub const DLL_THREAD_DETACH: DWORD = 3;
    pub const DLL_PROCESS_DETACH: DWORD = 0;

    pub const INFINITE: DWORD = !0;

    pub const DUPLICATE_SAME_ACCESS: DWORD = 0x00000002;

    pub const CONDITION_VARIABLE_INIT: CONDITION_VARIABLE = CONDITION_VARIABLE {
        ptr: ptr::null_mut(),
    };
    pub const SRWLOCK_INIT: SRWLOCK = SRWLOCK { ptr: ptr::null_mut() };

    pub const DETACHED_PROCESS: DWORD = 0x00000008;
    pub const CREATE_NEW_PROCESS_GROUP: DWORD = 0x00000200;
    pub const CREATE_UNICODE_ENVIRONMENT: DWORD = 0x00000400;
    pub const STARTF_USESTDHANDLES: DWORD = 0x00000100;

    pub const AF_INET: c_int = 2;
    pub const AF_INET6: c_int = 23;
    pub const SD_BOTH: c_int = 2;
    pub const SD_RECEIVE: c_int = 0;
    pub const SD_SEND: c_int = 1;
    pub const SOCK_DGRAM: c_int = 2;
    pub const SOCK_STREAM: c_int = 1;
    pub const SOL_SOCKET: c_int = 0xffff;
    pub const SO_RCVTIMEO: c_int = 0x1006;
    pub const SO_SNDTIMEO: c_int = 0x1005;
    pub const SO_REUSEADDR: c_int = 0x0004;
    pub const IPPROTO_IP: c_int = 0;
    pub const IPPROTO_TCP: c_int = 6;
    pub const IPPROTO_IPV6: c_int = 41;
    pub const TCP_NODELAY: c_int = 0x0001;
    pub const IP_TTL: c_int = 4;
    pub const IPV6_V6ONLY: c_int = 27;
    pub const SO_ERROR: c_int = 0x1007;
    pub const SO_BROADCAST: c_int = 0x0020;
    pub const IP_MULTICAST_LOOP: c_int = 11;
    pub const IPV6_MULTICAST_LOOP: c_int = 11;
    pub const IP_MULTICAST_TTL: c_int = 10;
    pub const IP_ADD_MEMBERSHIP: c_int = 12;
    pub const IP_DROP_MEMBERSHIP: c_int = 13;
    pub const IPV6_ADD_MEMBERSHIP: c_int = 12;
    pub const IPV6_DROP_MEMBERSHIP: c_int = 13;
    pub const MSG_PEEK: c_int = 0x2;

    #[repr(C)]
    pub struct ip_mreq {
        pub imr_multiaddr: in_addr,
        pub imr_interface: in_addr,
    }

    #[repr(C)]
    pub struct ipv6_mreq {
        pub ipv6mr_multiaddr: in6_addr,
        pub ipv6mr_interface: c_uint,
    }

    pub const VOLUME_NAME_DOS: DWORD = 0x0;
    pub const MOVEFILE_REPLACE_EXISTING: DWORD = 1;

    pub const FILE_BEGIN: DWORD = 0;
    pub const FILE_CURRENT: DWORD = 1;
    pub const FILE_END: DWORD = 2;

    pub const WAIT_OBJECT_0: DWORD = 0x00000000;
    pub const WAIT_TIMEOUT: DWORD = 258;
    pub const WAIT_FAILED: DWORD = 0xFFFFFFFF;

    #[cfg(target_env = "msvc")]
    #[cfg(feature = "backtrace")]
    pub const MAX_SYM_NAME: usize = 2000;
    #[cfg(target_arch = "x86")]
    #[cfg(feature = "backtrace")]
    pub const IMAGE_FILE_MACHINE_I386: DWORD = 0x014c;
    #[cfg(target_arch = "x86_64")]
    #[cfg(feature = "backtrace")]
    pub const IMAGE_FILE_MACHINE_AMD64: DWORD = 0x8664;
    #[cfg(target_arch = "aarch64")]
    #[cfg(feature = "backtrace")]
    pub const IMAGE_FILE_MACHINE_ARM64: DWORD = 0xAA64;
    #[cfg(target_arch = "arm")]
    #[cfg(feature = "backtrace")]
    pub const IMAGE_FILE_MACHINE_ARMNT: DWORD = 0x01c4;

    pub const EXCEPTION_CONTINUE_SEARCH: LONG = 0;
    pub const EXCEPTION_STACK_OVERFLOW: DWORD = 0xc00000fd;
    pub const EXCEPTION_MAXIMUM_PARAMETERS: usize = 15;

    pub const PIPE_ACCESS_INBOUND: DWORD = 0x00000001;
    pub const PIPE_ACCESS_OUTBOUND: DWORD = 0x00000002;
    pub const FILE_FLAG_FIRST_PIPE_INSTANCE: DWORD = 0x00080000;
    pub const FILE_FLAG_OVERLAPPED: DWORD = 0x40000000;
    pub const PIPE_WAIT: DWORD = 0x00000000;
    pub const PIPE_TYPE_BYTE: DWORD = 0x00000000;
    pub const PIPE_REJECT_REMOTE_CLIENTS: DWORD = 0x00000008;
    pub const PIPE_READMODE_BYTE: DWORD = 0x00000000;

    pub const FD_SETSIZE: usize = 64;

    pub const STACK_SIZE_PARAM_IS_A_RESERVATION: DWORD = 0x00010000;

    pub const HEAP_ZERO_MEMORY: DWORD = 0x00000008;

    #[repr(C)]
    #[cfg(not(target_pointer_width = "64"))]
    pub struct WSADATA {
        pub wVersion: WORD,
        pub wHighVersion: WORD,
        pub szDescription: [u8; WSADESCRIPTION_LEN + 1],
        pub szSystemStatus: [u8; WSASYS_STATUS_LEN + 1],
        pub iMaxSockets: u16,
        pub iMaxUdpDg: u16,
        pub lpVendorInfo: *mut u8,
    }
    #[repr(C)]
    #[cfg(target_pointer_width = "64")]
    pub struct WSADATA {
        pub wVersion: WORD,
        pub wHighVersion: WORD,
        pub iMaxSockets: u16,
        pub iMaxUdpDg: u16,
        pub lpVendorInfo: *mut u8,
        pub szDescription: [u8; WSADESCRIPTION_LEN + 1],
        pub szSystemStatus: [u8; WSASYS_STATUS_LEN + 1],
    }

    #[repr(C)]
    pub struct WSABUF {
        pub len: ULONG,
        pub buf: *mut CHAR,
    }

    #[repr(C)]
    pub struct WSAPROTOCOL_INFO {
        pub dwServiceFlags1: DWORD,
        pub dwServiceFlags2: DWORD,
        pub dwServiceFlags3: DWORD,
        pub dwServiceFlags4: DWORD,
        pub dwProviderFlags: DWORD,
        pub ProviderId: GUID,
        pub dwCatalogEntryId: DWORD,
        pub ProtocolChain: WSAPROTOCOLCHAIN,
        pub iVersion: c_int,
        pub iAddressFamily: c_int,
        pub iMaxSockAddr: c_int,
        pub iMinSockAddr: c_int,
        pub iSocketType: c_int,
        pub iProtocol: c_int,
        pub iProtocolMaxOffset: c_int,
        pub iNetworkByteOrder: c_int,
        pub iSecurityScheme: c_int,
        pub dwMessageSize: DWORD,
        pub dwProviderReserved: DWORD,
        pub szProtocol: [u16; (WSAPROTOCOL_LEN as usize) + 1],
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct WIN32_FILE_ATTRIBUTE_DATA {
        pub dwFileAttributes: DWORD,
        pub ftCreationTime: FILETIME,
        pub ftLastAccessTime: FILETIME,
        pub ftLastWriteTime: FILETIME,
        pub nFileSizeHigh: DWORD,
        pub nFileSizeLow: DWORD,
    }

    #[repr(C)]
    pub struct BY_HANDLE_FILE_INFORMATION {
        pub dwFileAttributes: DWORD,
        pub ftCreationTime: FILETIME,
        pub ftLastAccessTime: FILETIME,
        pub ftLastWriteTime: FILETIME,
        pub dwVolumeSerialNumber: DWORD,
        pub nFileSizeHigh: DWORD,
        pub nFileSizeLow: DWORD,
        pub nNumberOfLinks: DWORD,
        pub nFileIndexHigh: DWORD,
        pub nFileIndexLow: DWORD,
    }

    #[repr(C)]
    #[allow(dead_code)] // we only use some variants
    pub enum FILE_INFO_BY_HANDLE_CLASS {
        FileBasicInfo                   = 0,
        FileStandardInfo                = 1,
        FileNameInfo                    = 2,
        FileRenameInfo                  = 3,
        FileDispositionInfo             = 4,
        FileAllocationInfo              = 5,
        FileEndOfFileInfo               = 6,
        FileStreamInfo                  = 7,
        FileCompressionInfo             = 8,
        FileAttributeTagInfo            = 9,
        FileIdBothDirectoryInfo         = 10, // 0xA
        FileIdBothDirectoryRestartInfo  = 11, // 0xB
        FileIoPriorityHintInfo          = 12, // 0xC
        FileRemoteProtocolInfo          = 13, // 0xD
        FileFullDirectoryInfo           = 14, // 0xE
        FileFullDirectoryRestartInfo    = 15, // 0xF
        FileStorageInfo                 = 16, // 0x10
        FileAlignmentInfo               = 17, // 0x11
        FileIdInfo                      = 18, // 0x12
        FileIdExtdDirectoryInfo         = 19, // 0x13
        FileIdExtdDirectoryRestartInfo  = 20, // 0x14
        MaximumFileInfoByHandlesClass
    }

    #[repr(C)]
    pub struct FILE_BASIC_INFO {
        pub CreationTime: LARGE_INTEGER,
        pub LastAccessTime: LARGE_INTEGER,
        pub LastWriteTime: LARGE_INTEGER,
        pub ChangeTime: LARGE_INTEGER,
        pub FileAttributes: DWORD,
    }

    #[repr(C)]
    pub struct FILE_END_OF_FILE_INFO {
        pub EndOfFile: LARGE_INTEGER,
    }

    #[repr(C)]
    pub struct REPARSE_DATA_BUFFER {
        pub ReparseTag: c_uint,
        pub ReparseDataLength: c_ushort,
        pub Reserved: c_ushort,
        pub rest: (),
    }

    #[repr(C)]
    pub struct SYMBOLIC_LINK_REPARSE_BUFFER {
        pub SubstituteNameOffset: c_ushort,
        pub SubstituteNameLength: c_ushort,
        pub PrintNameOffset: c_ushort,
        pub PrintNameLength: c_ushort,
        pub Flags: c_ulong,
        pub PathBuffer: WCHAR,
    }

    #[repr(C)]
    pub struct MOUNT_POINT_REPARSE_BUFFER {
        pub SubstituteNameOffset: c_ushort,
        pub SubstituteNameLength: c_ushort,
        pub PrintNameOffset: c_ushort,
        pub PrintNameLength: c_ushort,
        pub PathBuffer: WCHAR,
    }

    pub type LPPROGRESS_ROUTINE = crate::option::Option<unsafe extern "system" fn(
        TotalFileSize: LARGE_INTEGER,
        TotalBytesTransferred: LARGE_INTEGER,
        StreamSize: LARGE_INTEGER,
        StreamBytesTransferred: LARGE_INTEGER,
        dwStreamNumber: DWORD,
        dwCallbackReason: DWORD,
        hSourceFile: HANDLE,
        hDestinationFile: HANDLE,
        lpData: LPVOID,
    ) -> DWORD>;

    #[repr(C)]
    pub struct CONDITION_VARIABLE { pub ptr: LPVOID }
    #[repr(C)]
    pub struct SRWLOCK { pub ptr: LPVOID }
    #[repr(C)]
    pub struct CRITICAL_SECTION {
        CriticalSectionDebug: LPVOID,
        LockCount: LONG,
        RecursionCount: LONG,
        OwningThread: HANDLE,
        LockSemaphore: HANDLE,
        SpinCount: ULONG_PTR
    }

    #[repr(C)]
    pub struct REPARSE_MOUNTPOINT_DATA_BUFFER {
        pub ReparseTag: DWORD,
        pub ReparseDataLength: DWORD,
        pub Reserved: WORD,
        pub ReparseTargetLength: WORD,
        pub ReparseTargetMaximumLength: WORD,
        pub Reserved1: WORD,
        pub ReparseTarget: WCHAR,
    }

    #[repr(C)]
    pub struct EXCEPTION_RECORD {
        pub ExceptionCode: DWORD,
        pub ExceptionFlags: DWORD,
        pub ExceptionRecord: *mut EXCEPTION_RECORD,
        pub ExceptionAddress: LPVOID,
        pub NumberParameters: DWORD,
        pub ExceptionInformation: [LPVOID; EXCEPTION_MAXIMUM_PARAMETERS]
    }

    #[repr(C)]
    pub struct EXCEPTION_POINTERS {
        pub ExceptionRecord: *mut EXCEPTION_RECORD,
        pub ContextRecord: *mut CONTEXT,
    }

    pub type PVECTORED_EXCEPTION_HANDLER = extern "system"
            fn(ExceptionInfo: *mut EXCEPTION_POINTERS) -> LONG;

    #[repr(C)]
    pub struct GUID {
        pub Data1: DWORD,
        pub Data2: WORD,
        pub Data3: WORD,
        pub Data4: [BYTE; 8],
    }

    #[repr(C)]
    pub struct WSAPROTOCOLCHAIN {
        pub ChainLen: c_int,
        pub ChainEntries: [DWORD; MAX_PROTOCOL_CHAIN as usize],
    }

    #[repr(C)]
    pub struct SECURITY_ATTRIBUTES {
        pub nLength: DWORD,
        pub lpSecurityDescriptor: LPVOID,
        pub bInheritHandle: BOOL,
    }

    #[repr(C)]
    pub struct PROCESS_INFORMATION {
        pub hProcess: HANDLE,
        pub hThread: HANDLE,
        pub dwProcessId: DWORD,
        pub dwThreadId: DWORD,
    }

    #[repr(C)]
    pub struct STARTUPINFO {
        pub cb: DWORD,
        pub lpReserved: LPWSTR,
        pub lpDesktop: LPWSTR,
        pub lpTitle: LPWSTR,
        pub dwX: DWORD,
        pub dwY: DWORD,
        pub dwXSize: DWORD,
        pub dwYSize: DWORD,
        pub dwXCountChars: DWORD,
        pub dwYCountCharts: DWORD,
        pub dwFillAttribute: DWORD,
        pub dwFlags: DWORD,
        pub wShowWindow: WORD,
        pub cbReserved2: WORD,
        pub lpReserved2: LPBYTE,
        pub hStdInput: HANDLE,
        pub hStdOutput: HANDLE,
        pub hStdError: HANDLE,
    }

    #[repr(C)]
    pub struct SOCKADDR {
        pub sa_family: ADDRESS_FAMILY,
        pub sa_data: [CHAR; 14],
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct FILETIME {
        pub dwLowDateTime: DWORD,
        pub dwHighDateTime: DWORD,
    }

    #[repr(C)]
    pub struct OVERLAPPED {
        pub Internal: *mut c_ulong,
        pub InternalHigh: *mut c_ulong,
        pub Offset: DWORD,
        pub OffsetHigh: DWORD,
        pub hEvent: HANDLE,
    }

    #[repr(C)]
    #[cfg(target_env = "msvc")]
    #[cfg(feature = "backtrace")]
    pub struct SYMBOL_INFO {
        pub SizeOfStruct: c_ulong,
        pub TypeIndex: c_ulong,
        pub Reserved: [u64; 2],
        pub Index: c_ulong,
        pub Size: c_ulong,
        pub ModBase: u64,
        pub Flags: c_ulong,
        pub Value: u64,
        pub Address: u64,
        pub Register: c_ulong,
        pub Scope: c_ulong,
        pub Tag: c_ulong,
        pub NameLen: c_ulong,
        pub MaxNameLen: c_ulong,
        // note that windows has this as 1, but it basically just means that
        // the name is inline at the end of the struct. For us, we just bump
        // the struct size up to MAX_SYM_NAME.
        pub Name: [c_char; MAX_SYM_NAME],
    }

    #[repr(C)]
    #[cfg(target_env = "msvc")]
    #[cfg(feature = "backtrace")]
    pub struct IMAGEHLP_LINE64 {
        pub SizeOfStruct: u32,
        pub Key: *const c_void,
        pub LineNumber: u32,
        pub Filename: *const c_char,
        pub Address: u64,
    }

    #[repr(C)]
    #[allow(dead_code)] // we only use some variants
    pub enum ADDRESS_MODE {
        AddrMode1616,
        AddrMode1632,
        AddrModeReal,
        AddrModeFlat,
    }

    #[repr(C)]
    #[cfg(feature = "backtrace")]
    pub struct ADDRESS64 {
        pub Offset: u64,
        pub Segment: u16,
        pub Mode: ADDRESS_MODE,
    }

    #[repr(C)]
    #[cfg(feature = "backtrace")]
    pub struct STACKFRAME_EX {
        pub AddrPC: ADDRESS64,
        pub AddrReturn: ADDRESS64,
        pub AddrFrame: ADDRESS64,
        pub AddrStack: ADDRESS64,
        pub AddrBStore: ADDRESS64,
        pub FuncTableEntry: *mut c_void,
        pub Params: [u64; 4],
        pub Far: BOOL,
        pub Virtual: BOOL,
        pub Reserved: [u64; 3],
        pub KdHelp: KDHELP64,
        pub StackFrameSize: DWORD,
        pub InlineFrameContext: DWORD,
    }

    #[repr(C)]
    #[cfg(feature = "backtrace")]
    pub struct STACKFRAME64 {
        pub AddrPC: ADDRESS64,
        pub AddrReturn: ADDRESS64,
        pub AddrFrame: ADDRESS64,
        pub AddrStack: ADDRESS64,
        pub AddrBStore: ADDRESS64,
        pub FuncTableEntry: *mut c_void,
        pub Params: [u64; 4],
        pub Far: BOOL,
        pub Virtual: BOOL,
        pub Reserved: [u64; 3],
        pub KdHelp: KDHELP64,
    }

    #[repr(C)]
    #[cfg(feature = "backtrace")]
    pub struct KDHELP64 {
        pub Thread: u64,
        pub ThCallbackStack: DWORD,
        pub ThCallbackBStore: DWORD,
        pub NextCallback: DWORD,
        pub FramePointer: DWORD,
        pub KiCallUserMode: u64,
        pub KeUserCallbackDispatcher: u64,
        pub SystemRangeStart: u64,
        pub KiUserExceptionDispatcher: u64,
        pub StackBase: u64,
        pub StackLimit: u64,
        pub Reserved: [u64; 5],
    }

    #[cfg(target_arch = "x86")]
    #[repr(C)]
    pub struct CONTEXT {
        pub ContextFlags: DWORD,
        pub Dr0: DWORD,
        pub Dr1: DWORD,
        pub Dr2: DWORD,
        pub Dr3: DWORD,
        pub Dr6: DWORD,
        pub Dr7: DWORD,
        pub FloatSave: FLOATING_SAVE_AREA,
        pub SegGs: DWORD,
        pub SegFs: DWORD,
        pub SegEs: DWORD,
        pub SegDs: DWORD,
        pub Edi: DWORD,
        pub Esi: DWORD,
        pub Ebx: DWORD,
        pub Edx: DWORD,
        pub Ecx: DWORD,
        pub Eax: DWORD,
        pub Ebp: DWORD,
        pub Eip: DWORD,
        pub SegCs: DWORD,
        pub EFlags: DWORD,
        pub Esp: DWORD,
        pub SegSs: DWORD,
        pub ExtendedRegisters: [u8; 512],
    }

    #[cfg(target_arch = "x86")]
    #[repr(C)]
    pub struct FLOATING_SAVE_AREA {
        pub ControlWord: DWORD,
        pub StatusWord: DWORD,
        pub TagWord: DWORD,
        pub ErrorOffset: DWORD,
        pub ErrorSelector: DWORD,
        pub DataOffset: DWORD,
        pub DataSelector: DWORD,
        pub RegisterArea: [u8; 80],
        pub Cr0NpxState: DWORD,
    }

    #[cfg(target_arch = "x86_64")]
    #[repr(C, align(16))]
    pub struct CONTEXT {
        pub P1Home: DWORDLONG,
        pub P2Home: DWORDLONG,
        pub P3Home: DWORDLONG,
        pub P4Home: DWORDLONG,
        pub P5Home: DWORDLONG,
        pub P6Home: DWORDLONG,

        pub ContextFlags: DWORD,
        pub MxCsr: DWORD,

        pub SegCs: WORD,
        pub SegDs: WORD,
        pub SegEs: WORD,
        pub SegFs: WORD,
        pub SegGs: WORD,
        pub SegSs: WORD,
        pub EFlags: DWORD,

        pub Dr0: DWORDLONG,
        pub Dr1: DWORDLONG,
        pub Dr2: DWORDLONG,
        pub Dr3: DWORDLONG,
        pub Dr6: DWORDLONG,
        pub Dr7: DWORDLONG,

        pub Rax: DWORDLONG,
        pub Rcx: DWORDLONG,
        pub Rdx: DWORDLONG,
        pub Rbx: DWORDLONG,
        pub Rsp: DWORDLONG,
        pub Rbp: DWORDLONG,
        pub Rsi: DWORDLONG,
        pub Rdi: DWORDLONG,
        pub R8:  DWORDLONG,
        pub R9:  DWORDLONG,
        pub R10: DWORDLONG,
        pub R11: DWORDLONG,
        pub R12: DWORDLONG,
        pub R13: DWORDLONG,
        pub R14: DWORDLONG,
        pub R15: DWORDLONG,

        pub Rip: DWORDLONG,

        pub FltSave: FLOATING_SAVE_AREA,

        pub VectorRegister: [M128A; 26],
        pub VectorControl: DWORDLONG,

        pub DebugControl: DWORDLONG,
        pub LastBranchToRip: DWORDLONG,
        pub LastBranchFromRip: DWORDLONG,
        pub LastExceptionToRip: DWORDLONG,
        pub LastExceptionFromRip: DWORDLONG,
    }

    #[cfg(target_arch = "x86_64")]
    #[repr(C, align(16))]
    pub struct M128A {
        pub Low:  c_ulonglong,
        pub High: c_longlong
    }

    #[cfg(target_arch = "x86_64")]
    #[repr(C, align(16))]
    pub struct FLOATING_SAVE_AREA {
        _Dummy: [u8; 512] // FIXME: Fill this out
    }

    #[cfg(target_arch = "arm")]
    #[repr(C)]
    pub struct CONTEXT {
        pub ContextFlags: ULONG,
        pub R0: ULONG,
        pub R1: ULONG,
        pub R2: ULONG,
        pub R3: ULONG,
        pub R4: ULONG,
        pub R5: ULONG,
        pub R6: ULONG,
        pub R7: ULONG,
        pub R8: ULONG,
        pub R9: ULONG,
        pub R10: ULONG,
        pub R11: ULONG,
        pub R12: ULONG,
        pub Sp: ULONG,
        pub Lr: ULONG,
        pub Pc: ULONG,
        pub Cpsr: ULONG,
        pub Fpscr: ULONG,
        pub Padding: ULONG,
        pub D: [u64; 32],
        pub Bvr: [ULONG; ARM_MAX_BREAKPOINTS],
        pub Bcr: [ULONG; ARM_MAX_BREAKPOINTS],
        pub Wvr: [ULONG; ARM_MAX_WATCHPOINTS],
        pub Wcr: [ULONG; ARM_MAX_WATCHPOINTS],
        pub Padding2: [ULONG; 2]
    }

    // FIXME(#43348): This structure is used for backtrace only, and a fake
    // definition is provided here only to allow rustdoc to pass type-check. This
    // will not appear in the final documentation. This should be also defined for
    // other architectures supported by Windows such as ARM, and for historical
    // interest, maybe MIPS and PowerPC as well.
    #[cfg(all(rustdoc, not(any(target_arch = "x86_64", target_arch = "x86",
          target_arch = "aarch64", target_arch = "arm"))))]
    pub enum CONTEXT {}

    #[cfg(target_arch = "aarch64")]
    pub const ARM64_MAX_BREAKPOINTS: usize = 8;

    #[cfg(target_arch = "aarch64")]
    pub const ARM64_MAX_WATCHPOINTS: usize = 2;

    #[cfg(target_arch = "aarch64")]
    #[repr(C)]
    pub struct ARM64_NT_NEON128 {
        pub D: [f64; 2],
    }

    #[cfg(target_arch = "aarch64")]
    #[repr(C, align(16))]
    pub struct CONTEXT {
        pub ContextFlags: DWORD,
        pub Cpsr: DWORD,
        pub X0: u64,
        pub X1: u64,
        pub X2: u64,
        pub X3: u64,
        pub X4: u64,
        pub X5: u64,
        pub X6: u64,
        pub X7: u64,
        pub X8: u64,
        pub X9: u64,
        pub X10: u64,
        pub X11: u64,
        pub X12: u64,
        pub X13: u64,
        pub X14: u64,
        pub X15: u64,
        pub X16: u64,
        pub X17: u64,
        pub X18: u64,
        pub X19: u64,
        pub X20: u64,
        pub X21: u64,
        pub X22: u64,
        pub X23: u64,
        pub X24: u64,
        pub X25: u64,
        pub X26: u64,
        pub X27: u64,
        pub X28: u64,
        pub Fp: u64,
        pub Lr: u64,
        pub Sp: u64,
        pub Pc: u64,
        pub V: [ARM64_NT_NEON128; 32],
        pub Fpcr: DWORD,
        pub Fpsr: DWORD,
        pub Bcr: [DWORD; ARM64_MAX_BREAKPOINTS],
        pub Bvr: [DWORD; ARM64_MAX_BREAKPOINTS],
        pub Wcr: [DWORD; ARM64_MAX_WATCHPOINTS],
        pub Wvr: [DWORD; ARM64_MAX_WATCHPOINTS],
    }

    #[repr(C)]
    pub struct SOCKADDR_STORAGE_LH {
        pub ss_family: ADDRESS_FAMILY,
        pub __ss_pad1: [CHAR; 6],
        pub __ss_align: i64,
        pub __ss_pad2: [CHAR; 112],
    }

    #[repr(C)]
    pub struct ADDRINFOA {
        pub ai_flags: c_int,
        pub ai_family: c_int,
        pub ai_socktype: c_int,
        pub ai_protocol: c_int,
        pub ai_addrlen: size_t,
        pub ai_canonname: *mut c_char,
        pub ai_addr: *mut SOCKADDR,
        pub ai_next: *mut ADDRINFOA,
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct sockaddr_in {
        pub sin_family: ADDRESS_FAMILY,
        pub sin_port: USHORT,
        pub sin_addr: in_addr,
        pub sin_zero: [CHAR; 8],
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct sockaddr_in6 {
        pub sin6_family: ADDRESS_FAMILY,
        pub sin6_port: USHORT,
        pub sin6_flowinfo: c_ulong,
        pub sin6_addr: in6_addr,
        pub sin6_scope_id: c_ulong,
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct in_addr {
        pub s_addr: u32,
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct in6_addr {
        pub s6_addr: [u8; 16],
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    #[allow(dead_code)] // we only use some variants
    pub enum EXCEPTION_DISPOSITION {
        ExceptionContinueExecution,
        ExceptionContinueSearch,
        ExceptionNestedException,
        ExceptionCollidedUnwind
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct CONSOLE_READCONSOLE_CONTROL {
        pub nLength: ULONG,
        pub nInitialChars: ULONG,
        pub dwCtrlWakeupMask: ULONG,
        pub dwControlKeyState: ULONG,
    }
    pub type PCONSOLE_READCONSOLE_CONTROL = *mut CONSOLE_READCONSOLE_CONTROL;

    #[repr(C)]
    #[derive(Copy)]
    pub struct fd_set {
        pub fd_count: c_uint,
        pub fd_array: [SOCKET; FD_SETSIZE],
    }

    impl Clone for fd_set {
        fn clone(&self) -> fd_set {
            *self
        }
    }

    #[repr(C)]
    #[derive(Copy, Clone)]
    pub struct timeval {
        pub tv_sec: c_long,
        pub tv_usec: c_long,
    }

    extern "system" {
        pub fn WSAStartup(wVersionRequested: WORD,
                          lpWSAData: LPWSADATA) -> c_int;
        pub fn WSACleanup() -> c_int;
        pub fn WSAGetLastError() -> c_int;
        pub fn WSADuplicateSocketW(s: SOCKET,
                                   dwProcessId: DWORD,
                                   lpProtocolInfo: LPWSAPROTOCOL_INFO)
                                   -> c_int;
        pub fn WSASend(s: SOCKET,
                       lpBuffers: LPWSABUF,
                       dwBufferCount: DWORD,
                       lpNumberOfBytesSent: LPDWORD,
                       dwFlags: DWORD,
                       lpOverlapped: LPWSAOVERLAPPED,
                       lpCompletionRoutine: LPWSAOVERLAPPED_COMPLETION_ROUTINE)
                       -> c_int;
        pub fn WSARecv(s: SOCKET,
                       lpBuffers: LPWSABUF,
                       dwBufferCount: DWORD,
                       lpNumberOfBytesRecvd: LPDWORD,
                       lpFlags: LPDWORD,
                       lpOverlapped: LPWSAOVERLAPPED,
                       lpCompletionRoutine: LPWSAOVERLAPPED_COMPLETION_ROUTINE)
                       -> c_int;
        pub fn GetCurrentProcessId() -> DWORD;
        pub fn WSASocketW(af: c_int,
                          kind: c_int,
                          protocol: c_int,
                          lpProtocolInfo: LPWSAPROTOCOL_INFO,
                          g: GROUP,
                          dwFlags: DWORD) -> SOCKET;
        pub fn ioctlsocket(s: SOCKET, cmd: c_long, argp: *mut c_ulong) -> c_int;
        pub fn InitializeCriticalSection(CriticalSection: *mut CRITICAL_SECTION);
        pub fn EnterCriticalSection(CriticalSection: *mut CRITICAL_SECTION);
        pub fn TryEnterCriticalSection(CriticalSection: *mut CRITICAL_SECTION) -> BOOLEAN;
        pub fn LeaveCriticalSection(CriticalSection: *mut CRITICAL_SECTION);
        pub fn DeleteCriticalSection(CriticalSection: *mut CRITICAL_SECTION);

        pub fn ReadConsoleW(hConsoleInput: HANDLE,
                            lpBuffer: LPVOID,
                            nNumberOfCharsToRead: DWORD,
                            lpNumberOfCharsRead: LPDWORD,
                            pInputControl: PCONSOLE_READCONSOLE_CONTROL) -> BOOL;

        pub fn WriteConsoleW(hConsoleOutput: HANDLE,
                             lpBuffer: LPCVOID,
                             nNumberOfCharsToWrite: DWORD,
                             lpNumberOfCharsWritten: LPDWORD,
                             lpReserved: LPVOID) -> BOOL;

        pub fn GetConsoleMode(hConsoleHandle: HANDLE,
                              lpMode: LPDWORD) -> BOOL;
        pub fn RemoveDirectoryW(lpPathName: LPCWSTR) -> BOOL;
        pub fn SetFileAttributesW(lpFileName: LPCWSTR,
                                  dwFileAttributes: DWORD) -> BOOL;
        pub fn GetFileInformationByHandle(hFile: HANDLE,
                                lpFileInformation: LPBY_HANDLE_FILE_INFORMATION)
                                -> BOOL;

        pub fn SetLastError(dwErrCode: DWORD);
        pub fn GetCommandLineW() -> *mut LPCWSTR;
        pub fn GetTempPathW(nBufferLength: DWORD,
                            lpBuffer: LPCWSTR) -> DWORD;
        pub fn OpenProcessToken(ProcessHandle: HANDLE,
                                DesiredAccess: DWORD,
                                TokenHandle: *mut HANDLE) -> BOOL;
        pub fn GetCurrentProcess() -> HANDLE;
        pub fn GetCurrentThread() -> HANDLE;
        pub fn GetStdHandle(which: DWORD) -> HANDLE;
        pub fn ExitProcess(uExitCode: c_uint) -> !;
        pub fn DeviceIoControl(hDevice: HANDLE,
                               dwIoControlCode: DWORD,
                               lpInBuffer: LPVOID,
                               nInBufferSize: DWORD,
                               lpOutBuffer: LPVOID,
                               nOutBufferSize: DWORD,
                               lpBytesReturned: LPDWORD,
                               lpOverlapped: LPOVERLAPPED) -> BOOL;
        pub fn CreateThread(lpThreadAttributes: LPSECURITY_ATTRIBUTES,
                            dwStackSize: SIZE_T,
                            lpStartAddress: extern "system" fn(*mut c_void)
                                                               -> DWORD,
                            lpParameter: LPVOID,
                            dwCreationFlags: DWORD,
                            lpThreadId: LPDWORD) -> HANDLE;
        pub fn WaitForSingleObject(hHandle: HANDLE,
                                   dwMilliseconds: DWORD) -> DWORD;
        pub fn SwitchToThread() -> BOOL;
        pub fn Sleep(dwMilliseconds: DWORD);
        pub fn GetProcessId(handle: HANDLE) -> DWORD;
        pub fn GetUserProfileDirectoryW(hToken: HANDLE,
                                        lpProfileDir: LPWSTR,
                                        lpcchSize: *mut DWORD) -> BOOL;
        pub fn SetHandleInformation(hObject: HANDLE,
                                    dwMask: DWORD,
                                    dwFlags: DWORD) -> BOOL;
        pub fn CopyFileExW(lpExistingFileName: LPCWSTR,
                           lpNewFileName: LPCWSTR,
                           lpProgressRoutine: LPPROGRESS_ROUTINE,
                           lpData: LPVOID,
                           pbCancel: LPBOOL,
                           dwCopyFlags: DWORD) -> BOOL;
        pub fn AddVectoredExceptionHandler(FirstHandler: ULONG,
                                           VectoredHandler: PVECTORED_EXCEPTION_HANDLER)
                                           -> LPVOID;
        pub fn FormatMessageW(flags: DWORD,
                              lpSrc: LPVOID,
                              msgId: DWORD,
                              langId: DWORD,
                              buf: LPWSTR,
                              nsize: DWORD,
                              args: *const c_void)
                              -> DWORD;
        pub fn TlsAlloc() -> DWORD;
        pub fn TlsGetValue(dwTlsIndex: DWORD) -> LPVOID;
        pub fn TlsSetValue(dwTlsIndex: DWORD, lpTlsvalue: LPVOID) -> BOOL;
        pub fn GetLastError() -> DWORD;
        pub fn QueryPerformanceFrequency(lpFrequency: *mut LARGE_INTEGER) -> BOOL;
        pub fn QueryPerformanceCounter(lpPerformanceCount: *mut LARGE_INTEGER)
                                       -> BOOL;
        pub fn GetExitCodeProcess(hProcess: HANDLE, lpExitCode: LPDWORD) -> BOOL;
        pub fn TerminateProcess(hProcess: HANDLE, uExitCode: UINT) -> BOOL;
        pub fn CreateProcessW(lpApplicationName: LPCWSTR,
                              lpCommandLine: LPWSTR,
                              lpProcessAttributes: LPSECURITY_ATTRIBUTES,
                              lpThreadAttributes: LPSECURITY_ATTRIBUTES,
                              bInheritHandles: BOOL,
                              dwCreationFlags: DWORD,
                              lpEnvironment: LPVOID,
                              lpCurrentDirectory: LPCWSTR,
                              lpStartupInfo: LPSTARTUPINFO,
                              lpProcessInformation: LPPROCESS_INFORMATION)
                              -> BOOL;
        pub fn GetEnvironmentVariableW(n: LPCWSTR, v: LPWSTR, nsize: DWORD) -> DWORD;
        pub fn SetEnvironmentVariableW(n: LPCWSTR, v: LPCWSTR) -> BOOL;
        pub fn GetEnvironmentStringsW() -> LPWCH;
        pub fn FreeEnvironmentStringsW(env_ptr: LPWCH) -> BOOL;
        pub fn GetModuleFileNameW(hModule: HMODULE,
                                  lpFilename: LPWSTR,
                                  nSize: DWORD)
                                  -> DWORD;
        pub fn CreateDirectoryW(lpPathName: LPCWSTR,
                                lpSecurityAttributes: LPSECURITY_ATTRIBUTES)
                                -> BOOL;
        pub fn DeleteFileW(lpPathName: LPCWSTR) -> BOOL;
        pub fn GetCurrentDirectoryW(nBufferLength: DWORD, lpBuffer: LPWSTR) -> DWORD;
        pub fn SetCurrentDirectoryW(lpPathName: LPCWSTR) -> BOOL;
        pub fn WideCharToMultiByte(CodePage: UINT,
                                   dwFlags: DWORD,
                                   lpWideCharStr: LPCWSTR,
                                   cchWideChar: c_int,
                                   lpMultiByteStr: LPSTR,
                                   cbMultiByte: c_int,
                                   lpDefaultChar: LPCSTR,
                                   lpUsedDefaultChar: LPBOOL) -> c_int;

        pub fn closesocket(socket: SOCKET) -> c_int;
        pub fn recv(socket: SOCKET, buf: *mut c_void, len: c_int,
                    flags: c_int) -> c_int;
        pub fn send(socket: SOCKET, buf: *const c_void, len: c_int,
                    flags: c_int) -> c_int;
        pub fn recvfrom(socket: SOCKET,
                        buf: *mut c_void,
                        len: c_int,
                        flags: c_int,
                        addr: *mut SOCKADDR,
                        addrlen: *mut c_int)
                        -> c_int;
        pub fn sendto(socket: SOCKET,
                      buf: *const c_void,
                      len: c_int,
                      flags: c_int,
                      addr: *const SOCKADDR,
                      addrlen: c_int)
                      -> c_int;
        pub fn shutdown(socket: SOCKET, how: c_int) -> c_int;
        pub fn accept(socket: SOCKET,
                      address: *mut SOCKADDR,
                      address_len: *mut c_int)
                      -> SOCKET;
        pub fn DuplicateHandle(hSourceProcessHandle: HANDLE,
                               hSourceHandle: HANDLE,
                               hTargetProcessHandle: HANDLE,
                               lpTargetHandle: LPHANDLE,
                               dwDesiredAccess: DWORD,
                               bInheritHandle: BOOL,
                               dwOptions: DWORD)
                               -> BOOL;
        pub fn ReadFile(hFile: HANDLE,
                        lpBuffer: LPVOID,
                        nNumberOfBytesToRead: DWORD,
                        lpNumberOfBytesRead: LPDWORD,
                        lpOverlapped: LPOVERLAPPED)
                        -> BOOL;
        pub fn WriteFile(hFile: HANDLE,
                         lpBuffer: LPVOID,
                         nNumberOfBytesToWrite: DWORD,
                         lpNumberOfBytesWritten: LPDWORD,
                         lpOverlapped: LPOVERLAPPED)
                         -> BOOL;
        pub fn CloseHandle(hObject: HANDLE) -> BOOL;
        pub fn CreateHardLinkW(lpSymlinkFileName: LPCWSTR,
                               lpTargetFileName: LPCWSTR,
                               lpSecurityAttributes: LPSECURITY_ATTRIBUTES)
                               -> BOOL;
        pub fn MoveFileExW(lpExistingFileName: LPCWSTR,
                           lpNewFileName: LPCWSTR,
                           dwFlags: DWORD)
                           -> BOOL;
        pub fn SetFilePointerEx(hFile: HANDLE,
                                liDistanceToMove: LARGE_INTEGER,
                                lpNewFilePointer: PLARGE_INTEGER,
                                dwMoveMethod: DWORD)
                                -> BOOL;
        pub fn FlushFileBuffers(hFile: HANDLE) -> BOOL;
        pub fn CreateFileW(lpFileName: LPCWSTR,
                           dwDesiredAccess: DWORD,
                           dwShareMode: DWORD,
                           lpSecurityAttributes: LPSECURITY_ATTRIBUTES,
                           dwCreationDisposition: DWORD,
                           dwFlagsAndAttributes: DWORD,
                           hTemplateFile: HANDLE)
                           -> HANDLE;

        pub fn FindFirstFileW(fileName: LPCWSTR,
                              findFileData: LPWIN32_FIND_DATAW)
                              -> HANDLE;
        pub fn FindNextFileW(findFile: HANDLE, findFileData: LPWIN32_FIND_DATAW)
                             -> BOOL;
        pub fn FindClose(findFile: HANDLE) -> BOOL;
        #[cfg(feature = "backtrace")]
        pub fn RtlCaptureContext(ctx: *mut CONTEXT);
        pub fn getsockopt(s: SOCKET,
                          level: c_int,
                          optname: c_int,
                          optval: *mut c_char,
                          optlen: *mut c_int)
                          -> c_int;
        pub fn setsockopt(s: SOCKET,
                          level: c_int,
                          optname: c_int,
                          optval: *const c_void,
                          optlen: c_int)
                          -> c_int;
        pub fn getsockname(socket: SOCKET,
                           address: *mut SOCKADDR,
                           address_len: *mut c_int)
                           -> c_int;
        pub fn getpeername(socket: SOCKET,
                           address: *mut SOCKADDR,
                           address_len: *mut c_int)
                           -> c_int;
        pub fn bind(socket: SOCKET, address: *const SOCKADDR,
                    address_len: socklen_t) -> c_int;
        pub fn listen(socket: SOCKET, backlog: c_int) -> c_int;
        pub fn connect(socket: SOCKET, address: *const SOCKADDR, len: c_int)
                       -> c_int;
        pub fn getaddrinfo(node: *const c_char, service: *const c_char,
                           hints: *const ADDRINFOA,
                           res: *mut *mut ADDRINFOA) -> c_int;
        pub fn freeaddrinfo(res: *mut ADDRINFOA);

        #[cfg(feature = "backtrace")]
        pub fn LoadLibraryW(name: LPCWSTR) -> HMODULE;
        #[cfg(feature = "backtrace")]
        pub fn FreeLibrary(handle: HMODULE) -> BOOL;
        pub fn GetProcAddress(handle: HMODULE,
                              name: LPCSTR) -> *mut c_void;
        pub fn GetModuleHandleW(lpModuleName: LPCWSTR) -> HMODULE;

        pub fn GetSystemTimeAsFileTime(lpSystemTimeAsFileTime: LPFILETIME);

        pub fn CreateEventW(lpEventAttributes: LPSECURITY_ATTRIBUTES,
                            bManualReset: BOOL,
                            bInitialState: BOOL,
                            lpName: LPCWSTR) -> HANDLE;
        pub fn WaitForMultipleObjects(nCount: DWORD,
                                      lpHandles: *const HANDLE,
                                      bWaitAll: BOOL,
                                      dwMilliseconds: DWORD) -> DWORD;
        pub fn CreateNamedPipeW(lpName: LPCWSTR,
                                dwOpenMode: DWORD,
                                dwPipeMode: DWORD,
                                nMaxInstances: DWORD,
                                nOutBufferSize: DWORD,
                                nInBufferSize: DWORD,
                                nDefaultTimeOut: DWORD,
                                lpSecurityAttributes: LPSECURITY_ATTRIBUTES)
                                -> HANDLE;
        pub fn CancelIo(handle: HANDLE) -> BOOL;
        pub fn GetOverlappedResult(hFile: HANDLE,
                                   lpOverlapped: LPOVERLAPPED,
                                   lpNumberOfBytesTransferred: LPDWORD,
                                   bWait: BOOL) -> BOOL;
        pub fn select(nfds: c_int,
                      readfds: *mut fd_set,
                      writefds: *mut fd_set,
                      exceptfds: *mut fd_set,
                      timeout: *const timeval) -> c_int;

        #[link_name = "SystemFunction036"]
        pub fn RtlGenRandom(RandomBuffer: *mut u8, RandomBufferLength: ULONG) -> BOOLEAN;

        pub fn GetProcessHeap() -> HANDLE;
        pub fn HeapAlloc(hHeap: HANDLE, dwFlags: DWORD, dwBytes: SIZE_T) -> LPVOID;
        pub fn HeapReAlloc(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID, dwBytes: SIZE_T) -> LPVOID;
        pub fn HeapFree(hHeap: HANDLE, dwFlags: DWORD, lpMem: LPVOID) -> BOOL;
    }

    // Functions that aren't available on every version of Windows that we support,
    // but we still use them and just provide some form of a fallback implementation.
    compat_fn! {
        kernel32:

        pub fn CreateSymbolicLinkW(_lpSymlinkFileName: LPCWSTR,
                                   _lpTargetFileName: LPCWSTR,
                                   _dwFlags: DWORD) -> BOOLEAN {
            SetLastError(ERROR_CALL_NOT_IMPLEMENTED as DWORD); 0
        }
        pub fn GetFinalPathNameByHandleW(_hFile: HANDLE,
                                         _lpszFilePath: LPCWSTR,
                                         _cchFilePath: DWORD,
                                         _dwFlags: DWORD) -> DWORD {
            SetLastError(ERROR_CALL_NOT_IMPLEMENTED as DWORD); 0
        }
        pub fn SetThreadStackGuarantee(_size: *mut c_ulong) -> BOOL {
            SetLastError(ERROR_CALL_NOT_IMPLEMENTED as DWORD); 0
        }
        pub fn SetThreadDescription(hThread: HANDLE,
                                    lpThreadDescription: LPCWSTR) -> HRESULT {
            SetLastError(ERROR_CALL_NOT_IMPLEMENTED as DWORD); E_NOTIMPL
        }
        pub fn SetFileInformationByHandle(_hFile: HANDLE,
                        _FileInformationClass: FILE_INFO_BY_HANDLE_CLASS,
                        _lpFileInformation: LPVOID,
                        _dwBufferSize: DWORD) -> BOOL {
            SetLastError(ERROR_CALL_NOT_IMPLEMENTED as DWORD); 0
        }
        pub fn SleepConditionVariableSRW(ConditionVariable: PCONDITION_VARIABLE,
                                         SRWLock: PSRWLOCK,
                                         dwMilliseconds: DWORD,
                                         Flags: ULONG) -> BOOL {
            panic!("condition variables not available")
        }
        pub fn WakeConditionVariable(ConditionVariable: PCONDITION_VARIABLE)
                                     -> () {
            panic!("condition variables not available")
        }
        pub fn WakeAllConditionVariable(ConditionVariable: PCONDITION_VARIABLE)
                                        -> () {
            panic!("condition variables not available")
        }
        pub fn AcquireSRWLockExclusive(SRWLock: PSRWLOCK) -> () {
            panic!("rwlocks not available")
        }
        pub fn AcquireSRWLockShared(SRWLock: PSRWLOCK) -> () {
            panic!("rwlocks not available")
        }
        pub fn ReleaseSRWLockExclusive(SRWLock: PSRWLOCK) -> () {
            panic!("rwlocks not available")
        }
        pub fn ReleaseSRWLockShared(SRWLock: PSRWLOCK) -> () {
            panic!("rwlocks not available")
        }
        pub fn TryAcquireSRWLockExclusive(SRWLock: PSRWLOCK) -> BOOLEAN {
            panic!("rwlocks not available")
        }
        pub fn TryAcquireSRWLockShared(SRWLock: PSRWLOCK) -> BOOLEAN {
            panic!("rwlocks not available")
        }
    }

    #[cfg(all(target_env = "gnu", feature = "backtrace"))]
    mod gnu {
        use super::*;

        pub const PROCESS_QUERY_INFORMATION: DWORD = 0x0400;

        pub const CP_ACP: UINT = 0;

        pub const WC_NO_BEST_FIT_CHARS: DWORD = 0x00000400;

        extern "system" {
            pub fn OpenProcess(dwDesiredAccess: DWORD,
                               bInheritHandle: BOOL,
                               dwProcessId: DWORD) -> HANDLE;
        }

        compat_fn! {
            kernel32:

            pub fn QueryFullProcessImageNameW(_hProcess: HANDLE,
                                              _dwFlags: DWORD,
                                              _lpExeName: LPWSTR,
                                              _lpdwSize: LPDWORD) -> BOOL {
                SetLastError(ERROR_CALL_NOT_IMPLEMENTED as DWORD); 0
            }
        }
    }

    #[cfg(all(target_env = "gnu", feature = "backtrace"))]
    pub use self::gnu::*;

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