Error with cpal and winapi 0.2.6

[Bobo1239]

There seems to have been some kind of regression. Running the enumerate example works flawlessly with 0.2.5 but after updating to 0.2.6, an error happens:

Bobo1239@WORKSTATION-W10 MINGW64 /e/development/Rust/asd
$ cargo run
     Running `target\debug\asd.exe`
Endpoints:
1. Endpoint "{0.0.0.00000000}.{be9148a0-3456-47b9-a0a0-2bf1df9b3448}" Audio formats:
1.1. Format { channels: [FrontLeft, FrontRight], samples_rate: SamplesRate(44100), data_type: F32 }
2. Endpoint "{0.0.0.00000000}.{bfbba739-0c5c-4130-9bb1-54386d837a50}" Audio formats:
2.1. Format { channels: [FrontLeft, FrontRight], samples_rate: SamplesRate(44100), data_type: F32 }
3. Endpoint "{0.0.0.00000000}.{e9227c7f-b25f-43c8-ac7a-39c9391b424e}" Audio formats:
3.1. Format { channels: [FrontLeft, FrontRight], samples_rate: SamplesRate(48000), data_type: F32 }

Bobo1239@WORKSTATION-W10 MINGW64 /e/development/Rust/asd
$ cargo update
    Updating registry `https://github.com/rust-lang/crates.io-index`
    Updating winapi v0.2.5 -> v0.2.6

Bobo1239@WORKSTATION-W10 MINGW64 /e/development/Rust/asd
$ cargo run
   Compiling ole32-sys v0.1.0
   Compiling cpal v0.2.9
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:39:9: 39:27 warning: lint raw_pointer_derive has been removed: using derive with raw pointers is ok
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:39 #[allow(raw_pointer_derive)]
                                                                                                                ^~~~~~~~~~~~~~~~~~
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:39:9: 39:27 warning: lint raw_pointer_derive has been removed: using derive with raw pointers is ok
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:39 #[allow(raw_pointer_derive)]
                                                                                                                ^~~~~~~~~~~~~~~~~~
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:38:16: 38:21 note: in this expansion of #[derive_Clone] (defined in C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs)
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:39:9: 39:27 warning: lint raw_pointer_derive has been removed: using derive with raw pointers is ok
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:39 #[allow(raw_pointer_derive)]
                                                                                                                ^~~~~~~~~~~~~~~~~~
C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:38:10: 38:14 note: in this expansion of #[derive_Copy] (defined in C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs)
   Compiling asd v0.1.0 (file:///E:/development/Rust/asd)
src\main.rs:3:5: 3:13 warning: unused import, #[warn(unused_imports)] on by default
src\main.rs:3 use cpal::*;
                  ^~~~~~~~
     Running `target\debug\asd.exe`
Endpoints:
1. Endpoint "{0.0.0.00000000}.{be9148a0-3456-47b9-a0a0-2bf1df9b3448}" Audio formats:
thread '<main>' panicked at 'Unknown SubFormat GUID returned by GetMixFormat: GUID { Data1: 1048576, Data2: 128, Data3: 43520, Data4: [0, 56, 155, 113, 10, 49, 105, 57] }', C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:191
thread '<main>' panicked at 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"', ../src/libcore\result.rs:688
stack backtrace:
   0:           0x7561aa - sys::backtrace::write::he59f738983b73261zlu
   1:           0x75e687 - panicking::default_handler::h5387b6771edf5f5a0Xy
   2:           0x71f988 - sys_common::unwind::begin_unwind_inner::hce5c1d8577eb6671U8s
   3:           0x72025b - sys_common::unwind::begin_unwind_fmt::h563db00c15edff8207s
   4:           0x7528a2 - rust_begin_unwind
   5:           0x771098 - panicking::panic_fmt::h3dc40a8b303af4f9zYL
   6:           0x402b38 - result::Result<T, E>::unwrap::h5258964690686995623
                        at ../src/libcore/macros.rs:29
   7:           0x40273f - cpal_impl::Endpoint.Drop::drop::hb1bd58f9c598cd4fj4a
                        at C:\msys64\home\Bobo1239\.cargo\registry\src\github.com-88ac128001ac3a9a\cpal-0.2.9\src\wasapi/mod.rs:240
   8:           0x40269e - cpal..cpal_impl..Endpoint::drop.14272::hbb1a2b62c3a7db62
   9:           0x402658 - cpal..Endpoint::drop.14269::h373182430cffd7f6
  10:           0x401914 - main::h5153aed50d95138bgaa
                        at src/main.rs:9
  11:           0x75dd88 - sys_common::unwind::try::try_fn::h15965401945723051019
  12:           0x7491df - sys_common::unwind::try::inner_try::hb2e82d814f76fd0ds5s
  13:           0x75dc89 - rt::lang_start::h39f4c98014ab81eaeQy
  14:           0x4055aa - main
  15:           0x4013b4 - _tmainCRTStartup
  16:           0x4014e7 - mainCRTStartup
  17:     0x7fff67f68101 - je_arena_alloc_junk_small.part.25
thread panicked while panicking. aborting.
       error Process didn't exit successfully: `target\debug\asd.exe` (exit code: 3221225501)
Illegal instruction

[retep998]

Blah, I suspect this is one of the types getting the wrong packing/alignment.

Oh how I wish we'd get rust-lang/rfcs#1399 already

[retep998]

@Bobo1239 Can you confirm whether the fix in the dev branch fixes this? You can use a cargo override to test it.

[Bobo1239]

Works! Thank you!

[mvdnes]

Works for my project as well!