src/test/ui/lint/lint-ctypes.stderr

   1 error: `extern` block uses type `Foo`, which is not FFI-safe
   2   --> $DIR/lint-ctypes.rs:46:28
   3    |
   4 LL |     pub fn ptr_type1(size: *const Foo);
   5    |                            ^^^^^^^^^^ not FFI-safe
   6    |
   7 note: lint level defined here
   8   --> $DIR/lint-ctypes.rs:4:9
   9    |
  10 LL | #![deny(improper_ctypes)]
  11    |         ^^^^^^^^^^^^^^^
  12    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
  13    = note: this struct has unspecified layout
  14 note: type defined here
  15   --> $DIR/lint-ctypes.rs:24:1
  16    |
  17 LL | pub struct Foo;
  18    | ^^^^^^^^^^^^^^^
  19
  20 error: `extern` block uses type `Foo`, which is not FFI-safe
  21   --> $DIR/lint-ctypes.rs:47:28
  22    |
  23 LL |     pub fn ptr_type2(size: *const Foo);
  24    |                            ^^^^^^^^^^ not FFI-safe
  25    |
  26    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
  27    = note: this struct has unspecified layout
  28 note: type defined here
  29   --> $DIR/lint-ctypes.rs:24:1
  30    |
  31 LL | pub struct Foo;
  32    | ^^^^^^^^^^^^^^^
  33
  34 error: `extern` block uses type `[u32]`, which is not FFI-safe
  35   --> $DIR/lint-ctypes.rs:48:26
  36    |
  37 LL |     pub fn slice_type(p: &[u32]);
  38    |                          ^^^^^^ not FFI-safe
  39    |
  40    = help: consider using a raw pointer instead
  41    = note: slices have no C equivalent
  42
  43 error: `extern` block uses type `str`, which is not FFI-safe
  44   --> $DIR/lint-ctypes.rs:49:24
  45    |
  46 LL |     pub fn str_type(p: &str);
  47    |                        ^^^^ not FFI-safe
  48    |
  49    = help: consider using `*const u8` and a length instead
  50    = note: string slices have no C equivalent
  51
  52 error: `extern` block uses type `std::boxed::Box<u32>`, which is not FFI-safe
  53   --> $DIR/lint-ctypes.rs:50:24
  54    |
  55 LL |     pub fn box_type(p: Box<u32>);
  56    |                        ^^^^^^^^ not FFI-safe
  57    |
  58    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
  59    = note: this struct has unspecified layout
  60
  61 error: `extern` block uses type `char`, which is not FFI-safe
  62   --> $DIR/lint-ctypes.rs:51:25
  63    |
  64 LL |     pub fn char_type(p: char);
  65    |                         ^^^^ not FFI-safe
  66    |
  67    = help: consider using `u32` or `libc::wchar_t` instead
  68    = note: the `char` type has no C equivalent
  69
  70 error: `extern` block uses type `i128`, which is not FFI-safe
  71   --> $DIR/lint-ctypes.rs:52:25
  72    |
  73 LL |     pub fn i128_type(p: i128);
  74    |                         ^^^^ not FFI-safe
  75    |
  76    = note: 128-bit integers don't currently have a known stable ABI
  77
  78 error: `extern` block uses type `u128`, which is not FFI-safe
  79   --> $DIR/lint-ctypes.rs:53:25
  80    |
  81 LL |     pub fn u128_type(p: u128);
  82    |                         ^^^^ not FFI-safe
  83    |
  84    = note: 128-bit integers don't currently have a known stable ABI
  85
  86 error: `extern` block uses type `dyn std::clone::Clone`, which is not FFI-safe
  87   --> $DIR/lint-ctypes.rs:54:26
  88    |
  89 LL |     pub fn trait_type(p: &dyn Clone);
  90    |                          ^^^^^^^^^^ not FFI-safe
  91    |
  92    = note: trait objects have no C equivalent
  93
  94 error: `extern` block uses type `(i32, i32)`, which is not FFI-safe
  95   --> $DIR/lint-ctypes.rs:55:26
  96    |
  97 LL |     pub fn tuple_type(p: (i32, i32));
  98    |                          ^^^^^^^^^^ not FFI-safe
  99    |
 100    = help: consider using a struct instead
 101    = note: tuples have unspecified layout
 102
 103 error: `extern` block uses type `(i32, i32)`, which is not FFI-safe
 104   --> $DIR/lint-ctypes.rs:56:27
 105    |
 106 LL |     pub fn tuple_type2(p: I32Pair);
 107    |                           ^^^^^^^ not FFI-safe
 108    |
 109    = help: consider using a struct instead
 110    = note: tuples have unspecified layout
 111
 112 error: `extern` block uses type `ZeroSize`, which is not FFI-safe
 113   --> $DIR/lint-ctypes.rs:57:25
 114    |
 115 LL |     pub fn zero_size(p: ZeroSize);
 116    |                         ^^^^^^^^ not FFI-safe
 117    |
 118    = help: consider adding a member to this struct
 119    = note: this struct has no fields
 120 note: type defined here
 121   --> $DIR/lint-ctypes.rs:20:1
 122    |
 123 LL | pub struct ZeroSize;
 124    | ^^^^^^^^^^^^^^^^^^^^
 125
 126 error: `extern` block uses type `ZeroSizeWithPhantomData`, which is not FFI-safe
 127   --> $DIR/lint-ctypes.rs:58:33
 128    |
 129 LL |     pub fn zero_size_phantom(p: ZeroSizeWithPhantomData);
 130    |                                 ^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
 131    |
 132    = note: composed only of `PhantomData`
 133 note: type defined here
 134   --> $DIR/lint-ctypes.rs:43:1
 135    |
 136 LL | pub struct ZeroSizeWithPhantomData(::std::marker::PhantomData<i32>);
 137    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 138
 139 error: `extern` block uses type `std::marker::PhantomData<bool>`, which is not FFI-safe
 140   --> $DIR/lint-ctypes.rs:61:12
 141    |
 142 LL |         -> ::std::marker::PhantomData<bool>;
 143    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
 144    |
 145    = note: composed only of `PhantomData`
 146
 147 error: `extern` block uses type `fn()`, which is not FFI-safe
 148   --> $DIR/lint-ctypes.rs:62:23
 149    |
 150 LL |     pub fn fn_type(p: RustFn);
 151    |                       ^^^^^^ not FFI-safe
 152    |
 153    = help: consider using an `extern fn(...) -> ...` function pointer instead
 154    = note: this function pointer has Rust-specific calling convention
 155
 156 error: `extern` block uses type `fn()`, which is not FFI-safe
 157   --> $DIR/lint-ctypes.rs:63:24
 158    |
 159 LL |     pub fn fn_type2(p: fn());
 160    |                        ^^^^ not FFI-safe
 161    |
 162    = help: consider using an `extern fn(...) -> ...` function pointer instead
 163    = note: this function pointer has Rust-specific calling convention
 164
 165 error: `extern` block uses type `std::boxed::Box<u32>`, which is not FFI-safe
 166   --> $DIR/lint-ctypes.rs:64:28
 167    |
 168 LL |     pub fn fn_contained(p: RustBadRet);
 169    |                            ^^^^^^^^^^ not FFI-safe
 170    |
 171    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
 172    = note: this struct has unspecified layout
 173
 174 error: `extern` block uses type `i128`, which is not FFI-safe
 175   --> $DIR/lint-ctypes.rs:65:32
 176    |
 177 LL |     pub fn transparent_i128(p: TransparentI128);
 178    |                                ^^^^^^^^^^^^^^^ not FFI-safe
 179    |
 180    = note: 128-bit integers don't currently have a known stable ABI
 181
 182 error: `extern` block uses type `str`, which is not FFI-safe
 183   --> $DIR/lint-ctypes.rs:66:31
 184    |
 185 LL |     pub fn transparent_str(p: TransparentStr);
 186    |                               ^^^^^^^^^^^^^^ not FFI-safe
 187    |
 188    = help: consider using `*const u8` and a length instead
 189    = note: string slices have no C equivalent
 190
 191 error: `extern` block uses type `std::boxed::Box<u32>`, which is not FFI-safe
 192   --> $DIR/lint-ctypes.rs:67:30
 193    |
 194 LL |     pub fn transparent_fn(p: TransparentBadFn);
 195    |                              ^^^^^^^^^^^^^^^^ not FFI-safe
 196    |
 197    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
 198    = note: this struct has unspecified layout
 199
 200 error: `extern` block uses type `[u8; 8]`, which is not FFI-safe
 201   --> $DIR/lint-ctypes.rs:68:27
 202    |
 203 LL |     pub fn raw_array(arr: [u8; 8]);
 204    |                           ^^^^^^^ not FFI-safe
 205    |
 206    = help: consider passing a pointer to the array
 207    = note: passing raw arrays by value is not FFI-safe
 208
 209 error: `extern` block uses type `u128`, which is not FFI-safe
 210   --> $DIR/lint-ctypes.rs:70:34
 211    |
 212 LL |     pub static static_u128_type: u128;
 213    |                                  ^^^^ not FFI-safe
 214    |
 215    = note: 128-bit integers don't currently have a known stable ABI
 216
 217 error: `extern` block uses type `u128`, which is not FFI-safe
 218   --> $DIR/lint-ctypes.rs:71:40
 219    |
 220 LL |     pub static static_u128_array_type: [u128; 16];
 221    |                                        ^^^^^^^^^^ not FFI-safe
 222    |
 223    = note: 128-bit integers don't currently have a known stable ABI
 224
 225 error: aborting due to 23 previous errors
 226