Refactor "not FFI-safe" diagnostic
This commit is contained in:
varkor
parent
79368db1ce
commit
9d712177a3
@ -859,21 +859,42 @@ fn check_type_for_ffi(&self,
|
||||
}
|
||||
}
|
||||
|
||||
fn emit_ffi_unsafe_type_lint(
|
||||
&mut self,
|
||||
ty: Ty<'tcx>,
|
||||
sp: Span,
|
||||
note: &str,
|
||||
help: Option<&str>,
|
||||
) {
|
||||
let mut diag = self.cx.struct_span_lint(
|
||||
IMPROPER_CTYPES,
|
||||
sp,
|
||||
&format!("`extern` block uses type `{}`, which is not FFI-safe", ty),
|
||||
);
|
||||
diag.span_label(sp, "not FFI-safe");
|
||||
if let Some(help) = help {
|
||||
diag.help(help);
|
||||
}
|
||||
diag.note(note);
|
||||
if let ty::Adt(def, _) = ty.sty {
|
||||
if let Some(sp) = self.cx.tcx.hir().span_if_local(def.did) {
|
||||
diag.span_note(sp, "type defined here");
|
||||
}
|
||||
}
|
||||
diag.emit();
|
||||
}
|
||||
|
||||
fn check_for_opaque_ty(&mut self, sp: Span, ty: Ty<'tcx>) -> bool {
|
||||
use crate::rustc::ty::TypeFoldable;
|
||||
|
||||
struct ProhibitOpaqueTypes<'a, 'tcx> {
|
||||
cx: &'a LateContext<'a, 'tcx>,
|
||||
sp: Span,
|
||||
struct ProhibitOpaqueTypes<'tcx> {
|
||||
ty: Option<Ty<'tcx>>,
|
||||
};
|
||||
|
||||
impl<'a, 'tcx> ty::fold::TypeVisitor<'tcx> for ProhibitOpaqueTypes<'a, 'tcx> {
|
||||
impl<'tcx> ty::fold::TypeVisitor<'tcx> for ProhibitOpaqueTypes<'tcx> {
|
||||
fn visit_ty(&mut self, ty: Ty<'tcx>) -> bool {
|
||||
if let ty::Opaque(..) = ty.sty {
|
||||
self.cx.span_lint(IMPROPER_CTYPES,
|
||||
self.sp,
|
||||
&format!("`extern` block uses type `{}` which is not FFI-safe: \
|
||||
opaque types have no C equivalent", ty));
|
||||
self.ty = Some(ty);
|
||||
true
|
||||
} else {
|
||||
ty.super_visit_with(self)
|
||||
@ -881,8 +902,19 @@ fn visit_ty(&mut self, ty: Ty<'tcx>) -> bool {
|
||||
}
|
||||
}
|
||||
|
||||
let mut visitor = ProhibitOpaqueTypes { cx: self.cx, sp };
|
||||
ty.visit_with(&mut visitor)
|
||||
let mut visitor = ProhibitOpaqueTypes { ty: None };
|
||||
ty.visit_with(&mut visitor);
|
||||
if let Some(ty) = visitor.ty {
|
||||
self.emit_ffi_unsafe_type_lint(
|
||||
ty,
|
||||
sp,
|
||||
"opaque types have no C equivalent",
|
||||
None,
|
||||
);
|
||||
true
|
||||
} else {
|
||||
false
|
||||
}
|
||||
}
|
||||
|
||||
fn check_type_for_ffi_and_report_errors(&mut self, sp: Span, ty: Ty<'tcx>) {
|
||||
@ -900,24 +932,10 @@ fn check_type_for_ffi_and_report_errors(&mut self, sp: Span, ty: Ty<'tcx>) {
|
||||
match self.check_type_for_ffi(&mut FxHashSet::default(), ty) {
|
||||
FfiResult::FfiSafe => {}
|
||||
FfiResult::FfiPhantom(ty) => {
|
||||
self.cx.span_lint(IMPROPER_CTYPES,
|
||||
sp,
|
||||
&format!("`extern` block uses type `{}` which is not FFI-safe: \
|
||||
composed only of `PhantomData`", ty));
|
||||
self.emit_ffi_unsafe_type_lint(ty, sp, "composed only of `PhantomData`", None);
|
||||
}
|
||||
FfiResult::FfiUnsafe { ty: unsafe_ty, reason, help } => {
|
||||
let msg = format!("`extern` block uses type `{}` which is not FFI-safe: {}",
|
||||
unsafe_ty, reason);
|
||||
let mut diag = self.cx.struct_span_lint(IMPROPER_CTYPES, sp, &msg);
|
||||
if let Some(s) = help {
|
||||
diag.help(s);
|
||||
}
|
||||
if let ty::Adt(def, _) = unsafe_ty.sty {
|
||||
if let Some(sp) = self.cx.tcx.hir().span_if_local(def.did) {
|
||||
diag.span_note(sp, "type defined here");
|
||||
}
|
||||
}
|
||||
diag.emit();
|
||||
FfiResult::FfiUnsafe { ty, reason, help } => {
|
||||
self.emit_ffi_unsafe_type_lint(ty, sp, reason, help);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
@ -27,7 +27,7 @@ struct D {
|
||||
}
|
||||
|
||||
extern "C" {
|
||||
fn foo(x: A); //~ ERROR type `A` which is not FFI-safe
|
||||
fn foo(x: A); //~ ERROR type `A`, which is not FFI-safe
|
||||
fn bar(x: B); //~ ERROR type `A`
|
||||
fn baz(x: C);
|
||||
fn qux(x: A2); //~ ERROR type `A`
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
error: `extern` block uses type `A` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `A`, which is not FFI-safe
|
||||
--> $DIR/issue-14309.rs:30:15
|
||||
|
|
||||
LL | fn foo(x: A);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
note: lint level defined here
|
||||
--> $DIR/issue-14309.rs:1:9
|
||||
@ -10,6 +10,7 @@ note: lint level defined here
|
||||
LL | #![deny(improper_ctypes)]
|
||||
| ^^^^^^^^^^^^^^^
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/issue-14309.rs:4:1
|
||||
|
|
||||
@ -18,13 +19,14 @@ LL | | x: i32
|
||||
LL | | }
|
||||
| |_^
|
||||
|
||||
error: `extern` block uses type `A` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `A`, which is not FFI-safe
|
||||
--> $DIR/issue-14309.rs:31:15
|
||||
|
|
||||
LL | fn bar(x: B);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/issue-14309.rs:4:1
|
||||
|
|
||||
@ -33,13 +35,14 @@ LL | | x: i32
|
||||
LL | | }
|
||||
| |_^
|
||||
|
||||
error: `extern` block uses type `A` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `A`, which is not FFI-safe
|
||||
--> $DIR/issue-14309.rs:33:15
|
||||
|
|
||||
LL | fn qux(x: A2);
|
||||
| ^^
|
||||
| ^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/issue-14309.rs:4:1
|
||||
|
|
||||
@ -48,13 +51,14 @@ LL | | x: i32
|
||||
LL | | }
|
||||
| |_^
|
||||
|
||||
error: `extern` block uses type `A` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `A`, which is not FFI-safe
|
||||
--> $DIR/issue-14309.rs:34:16
|
||||
|
|
||||
LL | fn quux(x: B2);
|
||||
| ^^
|
||||
| ^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/issue-14309.rs:4:1
|
||||
|
|
||||
@ -63,13 +67,14 @@ LL | | x: i32
|
||||
LL | | }
|
||||
| |_^
|
||||
|
||||
error: `extern` block uses type `A` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `A`, which is not FFI-safe
|
||||
--> $DIR/issue-14309.rs:36:16
|
||||
|
|
||||
LL | fn fred(x: D);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/issue-14309.rs:4:1
|
||||
|
|
||||
|
||||
@ -3,7 +3,7 @@
|
||||
pub struct Foo;
|
||||
|
||||
extern {
|
||||
pub fn foo(x: (Foo)); //~ ERROR unspecified layout
|
||||
pub fn foo(x: (Foo)); //~ ERROR `extern` block uses type `Foo`
|
||||
}
|
||||
|
||||
fn main() {
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
error: `extern` block uses type `Foo` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `Foo`, which is not FFI-safe
|
||||
--> $DIR/issue-16250.rs:6:20
|
||||
|
|
||||
LL | pub fn foo(x: (Foo));
|
||||
| ^^^
|
||||
| ^^^ not FFI-safe
|
||||
|
|
||||
note: lint level defined here
|
||||
--> $DIR/issue-16250.rs:1:9
|
||||
@ -11,6 +11,7 @@ LL | #![deny(warnings)]
|
||||
| ^^^^^^^^
|
||||
= note: `#[deny(improper_ctypes)]` implied by `#[deny(warnings)]`
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/issue-16250.rs:3:1
|
||||
|
|
||||
|
||||
@ -36,36 +36,37 @@ union TransparentUnion<T: Copy> {
|
||||
|
||||
extern {
|
||||
fn zf(x: Z);
|
||||
fn uf(x: U); //~ ERROR enum has no representation hint
|
||||
fn bf(x: B); //~ ERROR enum has no representation hint
|
||||
fn tf(x: T); //~ ERROR enum has no representation hint
|
||||
fn uf(x: U); //~ ERROR `extern` block uses type `U`
|
||||
fn bf(x: B); //~ ERROR `extern` block uses type `B`
|
||||
fn tf(x: T); //~ ERROR `extern` block uses type `T`
|
||||
fn repr_c(x: ReprC);
|
||||
fn repr_u8(x: U8);
|
||||
fn repr_isize(x: Isize);
|
||||
fn option_ref(x: Option<&'static u8>);
|
||||
fn option_fn(x: Option<extern "C" fn()>);
|
||||
fn nonnull(x: Option<std::ptr::NonNull<u8>>);
|
||||
fn unique(x: Option<std::ptr::Unique<u8>>); //~ ERROR enum has no representation hint
|
||||
fn unique(x: Option<std::ptr::Unique<u8>>);
|
||||
//~^ ERROR `extern` block uses type `std::option::Option<std::ptr::Unique<u8>>`
|
||||
fn nonzero_u8(x: Option<num::NonZeroU8>);
|
||||
fn nonzero_u16(x: Option<num::NonZeroU16>);
|
||||
fn nonzero_u32(x: Option<num::NonZeroU32>);
|
||||
fn nonzero_u64(x: Option<num::NonZeroU64>);
|
||||
fn nonzero_u128(x: Option<num::NonZeroU128>);
|
||||
//~^ ERROR 128-bit integers don't currently have a known stable ABI
|
||||
//~^ ERROR `extern` block uses type `u128`
|
||||
fn nonzero_usize(x: Option<num::NonZeroUsize>);
|
||||
fn nonzero_i8(x: Option<num::NonZeroI8>);
|
||||
fn nonzero_i16(x: Option<num::NonZeroI16>);
|
||||
fn nonzero_i32(x: Option<num::NonZeroI32>);
|
||||
fn nonzero_i64(x: Option<num::NonZeroI64>);
|
||||
fn nonzero_i128(x: Option<num::NonZeroI128>);
|
||||
//~^ ERROR 128-bit integers don't currently have a known stable ABI
|
||||
//~^ ERROR `extern` block uses type `i128`
|
||||
fn nonzero_isize(x: Option<num::NonZeroIsize>);
|
||||
fn transparent_struct(x: Option<TransparentStruct<num::NonZeroU8>>);
|
||||
fn transparent_enum(x: Option<TransparentEnum<num::NonZeroU8>>);
|
||||
fn transparent_union(x: Option<TransparentUnion<num::NonZeroU8>>);
|
||||
//~^ ERROR enum has no representation hint
|
||||
fn repr_rust(x: Option<Rust<num::NonZeroU8>>); //~ ERROR enum has no representation hint
|
||||
fn no_result(x: Result<(), num::NonZeroI32>); //~ ERROR enum has no representation hint
|
||||
//~^ ERROR `extern` block uses type
|
||||
fn repr_rust(x: Option<Rust<num::NonZeroU8>>); //~ ERROR `extern` block uses type
|
||||
fn no_result(x: Result<(), num::NonZeroI32>); //~ ERROR `extern` block uses type
|
||||
}
|
||||
|
||||
pub fn main() { }
|
||||
pub fn main() {}
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
error: `extern` block uses type `U` which is not FFI-safe: enum has no representation hint
|
||||
error: `extern` block uses type `U`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:39:13
|
||||
|
|
||||
LL | fn uf(x: U);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
note: lint level defined here
|
||||
--> $DIR/lint-ctypes-enum.rs:3:9
|
||||
@ -10,81 +10,92 @@ note: lint level defined here
|
||||
LL | #![deny(improper_ctypes)]
|
||||
| ^^^^^^^^^^^^^^^
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes-enum.rs:9:1
|
||||
|
|
||||
LL | enum U { A }
|
||||
| ^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `B` which is not FFI-safe: enum has no representation hint
|
||||
error: `extern` block uses type `B`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:40:13
|
||||
|
|
||||
LL | fn bf(x: B);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes-enum.rs:10:1
|
||||
|
|
||||
LL | enum B { C, D }
|
||||
| ^^^^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `T` which is not FFI-safe: enum has no representation hint
|
||||
error: `extern` block uses type `T`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:41:13
|
||||
|
|
||||
LL | fn tf(x: T);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes-enum.rs:11:1
|
||||
|
|
||||
LL | enum T { E, F, G }
|
||||
| ^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `std::option::Option<std::ptr::Unique<u8>>` which is not FFI-safe: enum has no representation hint
|
||||
error: `extern` block uses type `std::option::Option<std::ptr::Unique<u8>>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:48:17
|
||||
|
|
||||
LL | fn unique(x: Option<std::ptr::Unique<u8>>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
|
||||
error: `extern` block uses type `u128` which is not FFI-safe: 128-bit integers don't currently have a known stable ABI
|
||||
--> $DIR/lint-ctypes-enum.rs:53:23
|
||||
error: `extern` block uses type `u128`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:54:23
|
||||
|
|
||||
LL | fn nonzero_u128(x: Option<num::NonZeroU128>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
|
||||
error: `extern` block uses type `i128` which is not FFI-safe: 128-bit integers don't currently have a known stable ABI
|
||||
--> $DIR/lint-ctypes-enum.rs:60:23
|
||||
error: `extern` block uses type `i128`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:61:23
|
||||
|
|
||||
LL | fn nonzero_i128(x: Option<num::NonZeroI128>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
|
||||
error: `extern` block uses type `std::option::Option<TransparentUnion<std::num::NonZeroU8>>` which is not FFI-safe: enum has no representation hint
|
||||
--> $DIR/lint-ctypes-enum.rs:65:28
|
||||
error: `extern` block uses type `std::option::Option<TransparentUnion<std::num::NonZeroU8>>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:66:28
|
||||
|
|
||||
LL | fn transparent_union(x: Option<TransparentUnion<num::NonZeroU8>>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
|
||||
error: `extern` block uses type `std::option::Option<Rust<std::num::NonZeroU8>>` which is not FFI-safe: enum has no representation hint
|
||||
--> $DIR/lint-ctypes-enum.rs:67:20
|
||||
|
|
||||
LL | fn repr_rust(x: Option<Rust<num::NonZeroU8>>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
|
||||
error: `extern` block uses type `std::result::Result<(), std::num::NonZeroI32>` which is not FFI-safe: enum has no representation hint
|
||||
error: `extern` block uses type `std::option::Option<Rust<std::num::NonZeroU8>>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:68:20
|
||||
|
|
||||
LL | fn no_result(x: Result<(), num::NonZeroI32>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
LL | fn repr_rust(x: Option<Rust<num::NonZeroU8>>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
|
||||
error: `extern` block uses type `std::result::Result<(), std::num::NonZeroI32>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes-enum.rs:69:20
|
||||
|
|
||||
LL | fn no_result(x: Result<(), num::NonZeroI32>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]`, `#[repr(transparent)]`, or integer `#[repr(...)]` attribute to this enum
|
||||
= note: enum has no representation hint
|
||||
|
||||
error: aborting due to 9 previous errors
|
||||
|
||||
|
||||
@ -54,12 +54,13 @@ pub struct StructWithProjectionAndLifetime<'a>(
|
||||
pub fn trait_type(p: &dyn Clone); //~ ERROR uses type `dyn std::clone::Clone`
|
||||
pub fn tuple_type(p: (i32, i32)); //~ ERROR uses type `(i32, i32)`
|
||||
pub fn tuple_type2(p: I32Pair); //~ ERROR uses type `(i32, i32)`
|
||||
pub fn zero_size(p: ZeroSize); //~ ERROR struct has no fields
|
||||
pub fn zero_size_phantom(p: ZeroSizeWithPhantomData); //~ ERROR composed only of `PhantomData`
|
||||
pub fn zero_size(p: ZeroSize); //~ ERROR uses type `ZeroSize`
|
||||
pub fn zero_size_phantom(p: ZeroSizeWithPhantomData);
|
||||
//~^ ERROR uses type `ZeroSizeWithPhantomData`
|
||||
pub fn zero_size_phantom_toplevel()
|
||||
-> ::std::marker::PhantomData<bool>; //~ ERROR: composed only of `PhantomData`
|
||||
pub fn fn_type(p: RustFn); //~ ERROR function pointer has Rust-specific
|
||||
pub fn fn_type2(p: fn()); //~ ERROR function pointer has Rust-specific
|
||||
-> ::std::marker::PhantomData<bool>; //~ ERROR uses type `std::marker::PhantomData<bool>`
|
||||
pub fn fn_type(p: RustFn); //~ ERROR uses type `fn()`
|
||||
pub fn fn_type2(p: fn()); //~ ERROR uses type `fn()`
|
||||
pub fn fn_contained(p: RustBadRet); //~ ERROR: uses type `std::boxed::Box<u32>`
|
||||
pub fn transparent_i128(p: TransparentI128); //~ ERROR: uses type `i128`
|
||||
pub fn transparent_str(p: TransparentStr); //~ ERROR: uses type `str`
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
error: `extern` block uses type `Foo` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `Foo`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:46:28
|
||||
|
|
||||
LL | pub fn ptr_type1(size: *const Foo);
|
||||
| ^^^^^^^^^^
|
||||
| ^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
note: lint level defined here
|
||||
--> $DIR/lint-ctypes.rs:4:9
|
||||
@ -10,161 +10,192 @@ note: lint level defined here
|
||||
LL | #![deny(improper_ctypes)]
|
||||
| ^^^^^^^^^^^^^^^
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes.rs:24:1
|
||||
|
|
||||
LL | pub struct Foo;
|
||||
| ^^^^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `Foo` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `Foo`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:47:28
|
||||
|
|
||||
LL | pub fn ptr_type2(size: *const Foo);
|
||||
| ^^^^^^^^^^
|
||||
| ^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes.rs:24:1
|
||||
|
|
||||
LL | pub struct Foo;
|
||||
| ^^^^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `[u32]` which is not FFI-safe: slices have no C equivalent
|
||||
error: `extern` block uses type `[u32]`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:48:26
|
||||
|
|
||||
LL | pub fn slice_type(p: &[u32]);
|
||||
| ^^^^^^
|
||||
| ^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using a raw pointer instead
|
||||
= note: slices have no C equivalent
|
||||
|
||||
error: `extern` block uses type `str` which is not FFI-safe: string slices have no C equivalent
|
||||
error: `extern` block uses type `str`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:49:24
|
||||
|
|
||||
LL | pub fn str_type(p: &str);
|
||||
| ^^^^
|
||||
| ^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using `*const u8` and a length instead
|
||||
= note: string slices have no C equivalent
|
||||
|
||||
error: `extern` block uses type `std::boxed::Box<u32>` which is not FFI-safe: this struct has unspecified layout
|
||||
error: `extern` block uses type `std::boxed::Box<u32>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:50:24
|
||||
|
|
||||
LL | pub fn box_type(p: Box<u32>);
|
||||
| ^^^^^^^^
|
||||
| ^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
|
||||
error: `extern` block uses type `char` which is not FFI-safe: the `char` type has no C equivalent
|
||||
error: `extern` block uses type `char`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:51:25
|
||||
|
|
||||
LL | pub fn char_type(p: char);
|
||||
| ^^^^
|
||||
| ^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using `u32` or `libc::wchar_t` instead
|
||||
= note: the `char` type has no C equivalent
|
||||
|
||||
error: `extern` block uses type `i128` which is not FFI-safe: 128-bit integers don't currently have a known stable ABI
|
||||
error: `extern` block uses type `i128`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:52:25
|
||||
|
|
||||
LL | pub fn i128_type(p: i128);
|
||||
| ^^^^
|
||||
| ^^^^ not FFI-safe
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
|
||||
error: `extern` block uses type `u128` which is not FFI-safe: 128-bit integers don't currently have a known stable ABI
|
||||
error: `extern` block uses type `u128`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:53:25
|
||||
|
|
||||
LL | pub fn u128_type(p: u128);
|
||||
| ^^^^
|
||||
| ^^^^ not FFI-safe
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
|
||||
error: `extern` block uses type `dyn std::clone::Clone` which is not FFI-safe: trait objects have no C equivalent
|
||||
error: `extern` block uses type `dyn std::clone::Clone`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:54:26
|
||||
|
|
||||
LL | pub fn trait_type(p: &dyn Clone);
|
||||
| ^^^^^^^^^^
|
||||
| ^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= note: trait objects have no C equivalent
|
||||
|
||||
error: `extern` block uses type `(i32, i32)` which is not FFI-safe: tuples have unspecified layout
|
||||
error: `extern` block uses type `(i32, i32)`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:55:26
|
||||
|
|
||||
LL | pub fn tuple_type(p: (i32, i32));
|
||||
| ^^^^^^^^^^
|
||||
| ^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using a struct instead
|
||||
= note: tuples have unspecified layout
|
||||
|
||||
error: `extern` block uses type `(i32, i32)` which is not FFI-safe: tuples have unspecified layout
|
||||
error: `extern` block uses type `(i32, i32)`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:56:27
|
||||
|
|
||||
LL | pub fn tuple_type2(p: I32Pair);
|
||||
| ^^^^^^^
|
||||
| ^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using a struct instead
|
||||
= note: tuples have unspecified layout
|
||||
|
||||
error: `extern` block uses type `ZeroSize` which is not FFI-safe: this struct has no fields
|
||||
error: `extern` block uses type `ZeroSize`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:57:25
|
||||
|
|
||||
LL | pub fn zero_size(p: ZeroSize);
|
||||
| ^^^^^^^^
|
||||
| ^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a member to this struct
|
||||
= note: this struct has no fields
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes.rs:20:1
|
||||
|
|
||||
LL | pub struct ZeroSize;
|
||||
| ^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `ZeroSizeWithPhantomData` which is not FFI-safe: composed only of `PhantomData`
|
||||
error: `extern` block uses type `ZeroSizeWithPhantomData`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:58:33
|
||||
|
|
||||
LL | pub fn zero_size_phantom(p: ZeroSizeWithPhantomData);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= note: composed only of `PhantomData`
|
||||
note: type defined here
|
||||
--> $DIR/lint-ctypes.rs:43:1
|
||||
|
|
||||
LL | pub struct ZeroSizeWithPhantomData(::std::marker::PhantomData<i32>);
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
|
||||
error: `extern` block uses type `std::marker::PhantomData<bool>` which is not FFI-safe: composed only of `PhantomData`
|
||||
--> $DIR/lint-ctypes.rs:60:12
|
||||
error: `extern` block uses type `std::marker::PhantomData<bool>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:61:12
|
||||
|
|
||||
LL | -> ::std::marker::PhantomData<bool>;
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= note: composed only of `PhantomData`
|
||||
|
||||
error: `extern` block uses type `fn()` which is not FFI-safe: this function pointer has Rust-specific calling convention
|
||||
--> $DIR/lint-ctypes.rs:61:23
|
||||
error: `extern` block uses type `fn()`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:62:23
|
||||
|
|
||||
LL | pub fn fn_type(p: RustFn);
|
||||
| ^^^^^^
|
||||
| ^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using an `extern fn(...) -> ...` function pointer instead
|
||||
= note: this function pointer has Rust-specific calling convention
|
||||
|
||||
error: `extern` block uses type `fn()` which is not FFI-safe: this function pointer has Rust-specific calling convention
|
||||
--> $DIR/lint-ctypes.rs:62:24
|
||||
error: `extern` block uses type `fn()`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:63:24
|
||||
|
|
||||
LL | pub fn fn_type2(p: fn());
|
||||
| ^^^^
|
||||
| ^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using an `extern fn(...) -> ...` function pointer instead
|
||||
= note: this function pointer has Rust-specific calling convention
|
||||
|
||||
error: `extern` block uses type `std::boxed::Box<u32>` which is not FFI-safe: this struct has unspecified layout
|
||||
--> $DIR/lint-ctypes.rs:63:28
|
||||
error: `extern` block uses type `std::boxed::Box<u32>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:64:28
|
||||
|
|
||||
LL | pub fn fn_contained(p: RustBadRet);
|
||||
| ^^^^^^^^^^
|
||||
| ^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
|
||||
error: `extern` block uses type `i128` which is not FFI-safe: 128-bit integers don't currently have a known stable ABI
|
||||
--> $DIR/lint-ctypes.rs:64:32
|
||||
error: `extern` block uses type `i128`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:65:32
|
||||
|
|
||||
LL | pub fn transparent_i128(p: TransparentI128);
|
||||
| ^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= note: 128-bit integers don't currently have a known stable ABI
|
||||
|
||||
error: `extern` block uses type `str` which is not FFI-safe: string slices have no C equivalent
|
||||
--> $DIR/lint-ctypes.rs:65:31
|
||||
error: `extern` block uses type `str`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:66:31
|
||||
|
|
||||
LL | pub fn transparent_str(p: TransparentStr);
|
||||
| ^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider using `*const u8` and a length instead
|
||||
= note: string slices have no C equivalent
|
||||
|
||||
error: `extern` block uses type `std::boxed::Box<u32>` which is not FFI-safe: this struct has unspecified layout
|
||||
--> $DIR/lint-ctypes.rs:66:30
|
||||
error: `extern` block uses type `std::boxed::Box<u32>`, which is not FFI-safe
|
||||
--> $DIR/lint-ctypes.rs:67:30
|
||||
|
|
||||
LL | pub fn transparent_fn(p: TransparentBadFn);
|
||||
| ^^^^^^^^^^^^^^^^
|
||||
| ^^^^^^^^^^^^^^^^ not FFI-safe
|
||||
|
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
|
||||
= note: this struct has unspecified layout
|
||||
|
||||
error: aborting due to 20 previous errors
|
||||
|
||||
|
||||
@ -10,7 +10,7 @@ pub fn ret_closure() -> A {
|
||||
|
||||
extern "C" {
|
||||
pub fn a(_: A);
|
||||
//~^ ERROR `extern` block uses type `A` which is not FFI-safe: opaque types have no C equivalent
|
||||
//~^ ERROR `extern` block uses type `A`, which is not FFI-safe
|
||||
}
|
||||
|
||||
fn main() {}
|
||||
|
||||
@ -1,14 +1,15 @@
|
||||
error: `extern` block uses type `A` which is not FFI-safe: opaque types have no C equivalent
|
||||
error: `extern` block uses type `A`, which is not FFI-safe
|
||||
--> $DIR/opaque-ty-ffi-unsafe.rs:12:17
|
||||
|
|
||||
LL | pub fn a(_: A);
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
note: lint level defined here
|
||||
--> $DIR/opaque-ty-ffi-unsafe.rs:3:9
|
||||
|
|
||||
LL | #![deny(improper_ctypes)]
|
||||
| ^^^^^^^^^^^^^^^
|
||||
= note: opaque types have no C equivalent
|
||||
|
||||
error: aborting due to previous error
|
||||
|
||||
|
||||
@ -12,7 +12,7 @@ union W {
|
||||
|
||||
extern "C" {
|
||||
static FOREIGN1: U; // OK
|
||||
static FOREIGN2: W; //~ ERROR union has unspecified layout
|
||||
static FOREIGN2: W; //~ ERROR `extern` block uses type `W`
|
||||
}
|
||||
|
||||
fn main() {}
|
||||
|
||||
@ -1,8 +1,8 @@
|
||||
error: `extern` block uses type `W` which is not FFI-safe: this union has unspecified layout
|
||||
error: `extern` block uses type `W`, which is not FFI-safe
|
||||
--> $DIR/union-repr-c.rs:15:22
|
||||
|
|
||||
LL | static FOREIGN2: W;
|
||||
| ^
|
||||
| ^ not FFI-safe
|
||||
|
|
||||
note: lint level defined here
|
||||
--> $DIR/union-repr-c.rs:2:9
|
||||
@ -10,6 +10,7 @@ note: lint level defined here
|
||||
LL | #![deny(improper_ctypes)]
|
||||
| ^^^^^^^^^^^^^^^
|
||||
= help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this union
|
||||
= note: this union has unspecified layout
|
||||
note: type defined here
|
||||
--> $DIR/union-repr-c.rs:9:1
|
||||
|
|
||||
|
||||
Loading…
Reference in New Issue
Block a user