32-bit build fails

[MagaTailor]

On 32-bit arm, using stable rust 1.5.0, I'm getting the following error:

Compiling floki v0.1.0 (file:///tmp/floki-master)
src/server.rs:109:23: 109:25 error: mismatched types:
 expected `server::NotifyMessage`,
    found `()`
(expected enum `server::NotifyMessage`,
    found ()) [E0308]
src/server.rs:109             Ok(ok) => ok,
                                        ^~
src/server.rs:252:17: 252:96 note: in this expansion of try_or_error! (defined in src/server.rs)
src/server.rs:109:23: 109:25 help: run `rustc --explain E0308` to see a detailed explanation
src/server.rs:109:23: 109:25 error: mismatched types:
 expected `server::NotifyMessage`,
    found `()`
(expected enum `server::NotifyMessage`,
    found ()) [E0308]
src/server.rs:109             Ok(ok) => ok,
                                        ^~
src/server.rs:256:17: 256:82 note: in this expansion of try_or_error! (defined in src/server.rs)
src/server.rs:109:23: 109:25 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:192:30: 192:38 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:192             ptr::null_mut(), file_len,
                                                      ^~~~~~~~
src/queue_backend.rs:191:25: 194:34 note: in this expansion of try! (defined in <std macros>)
src/queue_backend.rs:192:30: 192:38 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:197:13: 197:21 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:197             file_len,
                                     ^~~~~~~~
src/queue_backend.rs:195:9: 198:37 note: in this expansion of try! (defined in <std macros>)
src/queue_backend.rs:197:13: 197:21 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:293:56: 293:74 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:293             mman::msync(self.file_mmap as *mut c_void, sync_offset as u64, mman::MS_SYNC).unwrap();
                                                                                ^~~~~~~~~~~~~~~~~~
src/queue_backend.rs:293:56: 293:74 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:308:13: 308:36 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:308             self.sync_offset as u64,
                                     ^~~~~~~~~~~~~~~~~~~~~~~
src/queue_backend.rs:306:9: 309:35 note: in this expansion of try! (defined in <std macros>)
src/queue_backend.rs:308:13: 308:36 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:384:29: 384:49 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:384         mman::madvise(mmap, self.file_len as u64, mman::MADV_DONTNEED).unwrap();
                                                     ^~~~~~~~~~~~~~~~~~~~
src/queue_backend.rs:384:29: 384:49 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:385:28: 385:48 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:385         mman::munmap(mmap, self.file_len as u64).unwrap();
                                                    ^~~~~~~~~~~~~~~~~~~~
src/queue_backend.rs:385:28: 385:48 help: run `rustc --explain E0308` to see a detailed explanation
error: aborting due to 8 previous errors
Could not compile `floki`.

[arthurprs]

Thank you for the report. I'll check it out.

[arthurprs]

Ok, I beleive I got it fixed on 32bit systems.

It still won't build on stable, but that's expected as the code uses 4 features gates.

[MagaTailor]

Almost, using x86 1.7 :

Compiling floki v0.1.0 (file:///home/petevine/floki-master)
src/queue_backend.rs:188:30: 188:38 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:188             ptr::null_mut(), file_len,
                                                      ^~~~~~~~
src/queue_backend.rs:187:25: 190:34 note: in this expansion of try! (defined in <std macros>)
src/queue_backend.rs:188:30: 188:38 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:193:13: 193:21 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:193             file_len,
                                     ^~~~~~~~
src/queue_backend.rs:191:9: 194:37 note: in this expansion of try! (defined in <std macros>)
src/queue_backend.rs:193:13: 193:21 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:289:56: 289:74 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:289             mman::msync(self.file_mmap as *mut c_void, sync_offset as u64, mman::MS_SYNC).unwrap();
                                                                                ^~~~~~~~~~~~~~~~~~
src/queue_backend.rs:289:56: 289:74 help: run `rustc --explain E0308` to see a detailed explanation
src/queue_backend.rs:304:13: 304:36 error: mismatched types:
 expected `u32`,
    found `u64`
(expected u32,
    found u64) [E0308]
src/queue_backend.rs:304             self.sync_offset as u64,
                                     ^~~~~~~~~~~~~~~~~~~~~~~
src/queue_backend.rs:302:9: 305:35 note: in this expansion of try! (defined in <std macros>)
src/queue_backend.rs:304:13: 304:36 help: run `rustc --explain E0308` to see a detailed explanation
error: aborting due to 4 previous errors
Could not compile `floki`.

[arthurprs]

Finally fixed on 8b88891fe3fd109bd7bd87d88a3649cad438366a

I'll leave this open until I add a 32bit compilation job in travis.

[MagaTailor]

Yep, the 32-bit issue is fixed. Now, if you want to allow building on arm, this breakage causes errors like these:

Compiling nix v0.3.9
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/fcntl.rs:102:28: 102:41 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/fcntl.rs:102         unsafe { ffi::open(cstr.as_ptr(), oflag.bits(), mode.bits() as mode_t) }
                                                                                                               ^~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/fcntl.rs:101:14: 103:8 note: in this expansion of try! (defined in <std macros>)
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/fcntl.rs:102:28: 102:41 help: run `rustc --explain E0308` to see a detailed explanation
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:105:30: 105:43 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:105         unsafe { ffi::umount(cstr.as_ptr()) }
                                                                                                                 ^~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:104:15: 106:8 note: in this expansion of try! (defined in <std macros>)
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:105:30: 105:43 help: run `rustc --explain E0308` to see a detailed explanation
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:113:31: 113:44 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:113         unsafe { ffi::umount2(cstr.as_ptr(), flags.bits) }
                                                                                                                  ^~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:112:15: 114:8 note: in this expansion of try! (defined in <std macros>)
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mount.rs:113:31: 113:44 help: run `rustc --explain E0308` to see a detailed explanation
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:80:37: 80:50 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:80     let res = unsafe { ffi::mq_open(name.as_ptr(), oflag.bits(), mode.bits() as mode_t, attr as *const MqAttr) };
                                                                                                                        ^~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:80:37: 80:50 help: run `rustc --explain E0308` to see a detailed explanation
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:90:39: 90:52 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:90     let res = unsafe { ffi::mq_unlink(name.as_ptr()) };
                                                                                                                          ^~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:90:39: 90:52 help: run `rustc --explain E0308` to see a detailed explanation
   Compiling env_logger v0.3.2
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:112:31: 112:47 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:112     let len = unsafe { strlen(message.as_ptr()) as size_t };
                                                                                                                   ^~~~~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:112:31: 112:47 help: run `rustc --explain E0308` to see a detailed explanation
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:113:44: 113:60 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:113     let res = unsafe { ffi::mq_send(mqdes, message.as_ptr(), len, msq_prio) };
                                                                                                                                ^~~~~~~~~~~~~~~~
/home/odroid/.cargo/git/checkouts/nix-rust-410e385daf3c9671/master/src/mqueue.rs:113:44: 113:60 help: run `rustc --explain E0308` to see a detailed explanation
/home/odroid/.cargo/registry/src/github.com-48ad6e4054423464/nix-0.3.9/src/fcntl.rs:74:28: 74:41 error: mismatched types:
 expected `*const i8`,
    found `*const u8`
(expected i8,
    found u8) [E0308]

and so on. In most cases they can be fixed by simple casts as *const _

[arthurprs]

I guess these should go on the nix repository

[MagaTailor]

Well yeah, that was just an illustration of the problem. Or are you saying you're certain the final stage (your own code) would be free of this kind of error?