#![allow(unused_unsafe)]
#![allow(dead_code)]
#![deny(unsafe_code)]

struct Bar;
struct Bar2;
struct Bar3;

#[allow(unsafe_code)]
mod allowed_unsafe {
    fn allowed() { unsafe {} }
    unsafe fn also_allowed() {}
    unsafe trait AllowedUnsafe { }
    unsafe impl AllowedUnsafe for super::Bar {}
    #[no_mangle] fn allowed2() {}
    #[export_name = "foo"] fn allowed3() {}
}

macro_rules! unsafe_in_macro {
    () => {{
        #[no_mangle] fn foo() {} //~ ERROR: declaration of a `no_mangle` function
        #[no_mangle] static FOO: u32 = 5; //~ ERROR: declaration of a `no_mangle` static
        #[export_name = "bar"] fn bar() {}
        //~^ ERROR: declaration of a function with `export_name`
        #[export_name = "BAR"] static BAR: u32 = 5;
        //~^ ERROR: declaration of a static with `export_name`
        unsafe {} //~ ERROR: usage of an `unsafe` block
    }}
}

#[no_mangle] fn foo() {} //~ ERROR: declaration of a `no_mangle` function
#[no_mangle] static FOO: u32 = 5; //~ ERROR: declaration of a `no_mangle` static

trait AssocFnTrait {
    fn foo();
}

struct AssocFnFoo;

impl AssocFnFoo {
    #[no_mangle] fn foo() {} //~ ERROR: declaration of a `no_mangle` method
}

impl AssocFnTrait for AssocFnFoo {
    #[no_mangle] fn foo() {} //~ ERROR: declaration of a `no_mangle` method
}

#[export_name = "bar"] fn bar() {} //~ ERROR: declaration of a function with `export_name`
#[export_name = "BAR"] static BAR: u32 = 5; //~ ERROR: declaration of a static with `export_name`

#[link_section = ".example_section"] fn uwu() {} //~ ERROR: declaration of a function with `link_section`
#[link_section = ".example_section"] static UWU: u32 = 5; //~ ERROR: declaration of a static with `link_section`

struct AssocFnBar;

impl AssocFnBar {
    #[export_name = "bar"] fn bar() {} //~ ERROR: declaration of a method with `export_name`
}

impl AssocFnTrait for AssocFnBar {
    #[export_name = "bar"] fn foo() {} //~ ERROR: declaration of a method with `export_name`
}

unsafe fn baz() {} //~ ERROR: declaration of an `unsafe` function
unsafe trait Foo {} //~ ERROR: declaration of an `unsafe` trait
unsafe impl Foo for Bar {} //~ ERROR: implementation of an `unsafe` trait

trait Baz {
    unsafe fn baz(&self); //~ ERROR: declaration of an `unsafe` method
    unsafe fn provided(&self) {} //~ ERROR: implementation of an `unsafe` method
    unsafe fn provided_override(&self) {} //~ ERROR: implementation of an `unsafe` method
}

impl Baz for Bar {
    unsafe fn baz(&self) {} //~ ERROR: implementation of an `unsafe` method
    unsafe fn provided_override(&self) {} //~ ERROR: implementation of an `unsafe` method
}


#[allow(unsafe_code)]
trait A {
    unsafe fn allowed_unsafe(&self);
    unsafe fn allowed_unsafe_provided(&self) {}
}

#[allow(unsafe_code)]
impl Baz for Bar2 {
    unsafe fn baz(&self) {}
    unsafe fn provided_override(&self) {}
}

impl Baz for Bar3 {
    #[allow(unsafe_code)]
    unsafe fn baz(&self) {}
    unsafe fn provided_override(&self) {} //~ ERROR: implementation of an `unsafe` method
}

#[allow(unsafe_code)]
unsafe trait B {
    fn dummy(&self) {}
}

trait C {
    #[allow(unsafe_code)]
    unsafe fn baz(&self);
    unsafe fn provided(&self) {} //~ ERROR: implementation of an `unsafe` method
}

impl C for Bar {
    #[allow(unsafe_code)]
    unsafe fn baz(&self) {}
    unsafe fn provided(&self) {} //~ ERROR: implementation of an `unsafe` method
}

impl C for Bar2 {
    unsafe fn baz(&self) {} //~ ERROR: implementation of an `unsafe` method
}

trait D {
    #[allow(unsafe_code)]
    unsafe fn unsafe_provided(&self) {}
}

impl D for Bar {}

fn main() {
    unsafe {} //~ ERROR: usage of an `unsafe` block

    unsafe_in_macro!()
}