1 error: `extern` block uses type `U`, which is not FFI-safe
2 --> $DIR/lint-ctypes-enum.rs:39:13
7 note: the lint level is defined here
8 --> $DIR/lint-ctypes-enum.rs:3:9
10 LL | #![deny(improper_ctypes)]
12 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
13 = note: enum has no representation hint
14 note: the type is defined here
15 --> $DIR/lint-ctypes-enum.rs:9:1
20 error: `extern` block uses type `B`, which is not FFI-safe
21 --> $DIR/lint-ctypes-enum.rs:40:13
26 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
27 = note: enum has no representation hint
28 note: the type is defined here
29 --> $DIR/lint-ctypes-enum.rs:10:1
34 error: `extern` block uses type `T`, which is not FFI-safe
35 --> $DIR/lint-ctypes-enum.rs:41:13
40 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
41 = note: enum has no representation hint
42 note: the type is defined here
43 --> $DIR/lint-ctypes-enum.rs:11:1
45 LL | enum T { E, F, G }
48 error: `extern` block uses type `std::option::Option<std::ptr::Unique<u8>>`, which is not FFI-safe
49 --> $DIR/lint-ctypes-enum.rs:48:17
51 LL | fn unique(x: Option<std::ptr::Unique<u8>>);
52 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
54 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
55 = note: enum has no representation hint
57 error: `extern` block uses type `u128`, which is not FFI-safe
58 --> $DIR/lint-ctypes-enum.rs:54:23
60 LL | fn nonzero_u128(x: Option<num::NonZeroU128>);
61 | ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
63 = note: 128-bit integers don't currently have a known stable ABI
65 error: `extern` block uses type `i128`, which is not FFI-safe
66 --> $DIR/lint-ctypes-enum.rs:61:23
68 LL | fn nonzero_i128(x: Option<num::NonZeroI128>);
69 | ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
71 = note: 128-bit integers don't currently have a known stable ABI
73 error: `extern` block uses type `std::option::Option<TransparentUnion<std::num::NonZeroU8>>`, which is not FFI-safe
74 --> $DIR/lint-ctypes-enum.rs:66:28
76 LL | fn transparent_union(x: Option<TransparentUnion<num::NonZeroU8>>);
77 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
79 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
80 = note: enum has no representation hint
82 error: `extern` block uses type `std::option::Option<Rust<std::num::NonZeroU8>>`, which is not FFI-safe
83 --> $DIR/lint-ctypes-enum.rs:68:20
85 LL | fn repr_rust(x: Option<Rust<num::NonZeroU8>>);
86 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
88 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
89 = note: enum has no representation hint
91 error: `extern` block uses type `std::result::Result<(), std::num::NonZeroI32>`, which is not FFI-safe
92 --> $DIR/lint-ctypes-enum.rs:69:20
94 LL | fn no_result(x: Result<(), num::NonZeroI32>);
95 | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
97 = help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
98 = note: enum has no representation hint
100 error: aborting due to 9 previous errors