cleaned up some tests

merge privacy/privacy-sanity-2 with privacy/privacy-sanity.rs

Add comment to generics/type-args-on-module-in-bound.rs

Add comment to array-slice-vec/closure-in-array-eln.rs

Add comment to array-slice-vec/return-in-array-len.rs

Merge for-loop-while/break-outside-loop-2.rs with
for-loop-while/break-outside-loop.rs

Add comment to macros/column-macro-collision.rs

Add comment to privacy/private-extern-fn-visibility.rs

Add comment to mismatched_types/vec-hashset-type-mismatch.rs

Merge std-sync-right-kind-impls-2.rs with std-sync-right-kind-impls.rs

Add comment to array-slice-vec/slice-of-multi-ref.rs

Add comment to mismatched_types\vec-hashset-type-mismatch.rs

Add comment to derives/derive-hygiene-struct-builder.rs

Add comment to label/undeclared-label-span.rs

Add comment to label\undeclared-label-span.rs

Add comment to mismatched_types/array-repeat-unit-struct.rs

tests/ui/array-slice-vec/closure-in-array-len.rs

@@ -1,4 +1,5 @@
-struct Foo (
+//! regression test for <https://github.com/rust-lang/rust/issues/50600>
+struct Foo(
     fn([u8; |x: u8| {}]), //~ ERROR mismatched types
 );
 

tests/ui/array-slice-vec/closure-in-array-len.stderr

@@ -1,11 +1,11 @@
 error[E0308]: mismatched types
-  --> $DIR/issue-50600.rs:2:13
+  --> $DIR/closure-in-array-len.rs:3:13
    |
 LL |     fn([u8; |x: u8| {}]),
    |             ^^^^^^^^^^ expected `usize`, found closure
    |
    = note: expected type `usize`
-           found closure `{closure@$DIR/issue-50600.rs:2:13: 2:20}`
+           found closure `{closure@$DIR/closure-in-array-len.rs:3:13: 3:20}`
 
 error: aborting due to 1 previous error
 

tests/ui/array-slice-vec/return-in-array-len.rs

@@ -1,3 +1,4 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/51714>
 fn main() {
     //~^ NOTE: not the enclosing function body
     //~| NOTE: not the enclosing function body

tests/ui/array-slice-vec/return-in-array-len.stderr

@@ -1,5 +1,5 @@
 error[E0572]: return statement outside of function body
-  --> $DIR/issue-51714.rs:6:13
+  --> $DIR/return-in-array-len.rs:7:13
    |
 LL | / fn main() {
 ...  |
@@ -10,7 +10,7 @@ LL | | }
    | |_- ...not the enclosing function body
 
 error[E0572]: return statement outside of function body
-  --> $DIR/issue-51714.rs:10:10
+  --> $DIR/return-in-array-len.rs:11:10
    |
 LL | / fn main() {
 ...  |
@@ -21,7 +21,7 @@ LL | | }
    | |_- ...not the enclosing function body
 
 error[E0572]: return statement outside of function body
-  --> $DIR/issue-51714.rs:14:10
+  --> $DIR/return-in-array-len.rs:15:10
    |
 LL | / fn main() {
 ...  |
@@ -32,7 +32,7 @@ LL | | }
    | |_- ...not the enclosing function body
 
 error[E0572]: return statement outside of function body
-  --> $DIR/issue-51714.rs:18:10
+  --> $DIR/return-in-array-len.rs:19:10
    |
 LL | / fn main() {
 ...  |

tests/ui/array-slice-vec/slice-of-multi-ref.rs

@@ -1,3 +1,4 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/17503>
 //@ run-pass
 fn main() {
     let s: &[isize] = &[0, 1, 2, 3, 4];

tests/ui/derives/derive-hygiene-struct-builder.rs

@@ -1,3 +1,5 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/42453>
+//! struct named "builder" conflicted with derive macro internals.
 //@ run-pass
 #![allow(dead_code)]
 #![allow(non_camel_case_types)]
@@ -5,6 +7,4 @@
 #[derive(Debug)]
 struct builder;
 
-fn main() {
+fn main() {}
-
-}

tests/ui/dst/unsized-str-mutability.rs

@@ -1,6 +1,6 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/17361>
+//! Test that HIR ty lowering doesn't forget about mutability of `&mut str`.
 //@ run-pass
-// Test that HIR ty lowering doesn't forget about mutability of `&mut str`.
-
 
 fn main() {
     fn foo<T: ?Sized>(_: &mut T) {}

tests/ui/for-loop-while/break-outside-loop-2.rs

@@ -1,8 +0,0 @@
-// Make sure that a continue span actually contains the keyword.
-
-fn main() {
-    continue //~ ERROR `continue` outside of a loop
-    ;
-    break //~ ERROR `break` outside of a loop
-    ;
-}

tests/ui/for-loop-while/break-outside-loop-2.stderr

@@ -1,15 +0,0 @@
-error[E0268]: `continue` outside of a loop
-  --> $DIR/issue-28105.rs:4:5
-   |
-LL |     continue
-   |     ^^^^^^^^ cannot `continue` outside of a loop
-
-error[E0268]: `break` outside of a loop or labeled block
-  --> $DIR/issue-28105.rs:6:5
-   |
-LL |     break
-   |     ^^^^^ cannot `break` outside of a loop or labeled block
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0268`.

tests/ui/for-loop-while/break-outside-loop.rs

@@ -1,25 +1,41 @@
 struct Foo {
-    t: String
+    t: String,
 }
 
-fn cond() -> bool { true }
+fn cond() -> bool {
+    true
+}
 
-fn foo<F>(_: F) where F: FnOnce() {}
+fn foo<F>(_: F)
+where
+    F: FnOnce(),
+{
+}
 
 fn main() {
     let pth = break; //~ ERROR: `break` outside of a loop
-    if cond() { continue } //~ ERROR: `continue` outside of a loop
+    if cond() {
+        continue; //~ ERROR: `continue` outside of a loop
+    }
 
     while cond() {
-        if cond() { break }
+        if cond() {
-        if cond() { continue }
+            break;
+        }
+        if cond() {
+            continue;
+        }
         foo(|| {
-            if cond() { break } //~ ERROR: `break` inside of a closure
+            if cond() {
-            if cond() { continue } //~ ERROR: `continue` inside of a closure
+                break; //~ ERROR: `break` inside of a closure
+            }
+            if cond() {
+                continue; //~ ERROR: `continue` inside of a closure
+            }
         })
     }
 
-    let rs: Foo = Foo{t: pth};
+    let rs: Foo = Foo { t: pth };
 
     let unconstrained = break; //~ ERROR: `break` outside of a loop
 
@@ -32,4 +48,10 @@ fn main() {
             //~| ERROR `break` inside of a closure
         };
     }
+
+    // Make sure that a continue span actually contains the keyword. (#28105)
+    continue //~ ERROR `continue` outside of a loop
+    ;
+    break //~ ERROR `break` outside of a loop
+    ;
 }

tests/ui/for-loop-while/break-outside-loop.stderr

@@ -1,5 +1,5 @@
 error[E0767]: use of unreachable label `'lab`
-  --> $DIR/break-outside-loop.rs:30:19
+  --> $DIR/break-outside-loop.rs:46:19
    |
 LL |     'lab: loop {
    |     ---- unreachable label defined here
@@ -10,49 +10,62 @@ LL |             break 'lab;
    = note: labels are unreachable through functions, closures, async blocks and modules
 
 error[E0268]: `break` outside of a loop or labeled block
-  --> $DIR/break-outside-loop.rs:10:15
+  --> $DIR/break-outside-loop.rs:16:15
    |
 LL |     let pth = break;
    |               ^^^^^ cannot `break` outside of a loop or labeled block
 
 error[E0268]: `continue` outside of a loop
-  --> $DIR/break-outside-loop.rs:11:17
+  --> $DIR/break-outside-loop.rs:18:9
    |
-LL |     if cond() { continue }
+LL |         continue;
-   |                 ^^^^^^^^ cannot `continue` outside of a loop
+   |         ^^^^^^^^ cannot `continue` outside of a loop
 
 error[E0267]: `break` inside of a closure
-  --> $DIR/break-outside-loop.rs:17:25
+  --> $DIR/break-outside-loop.rs:30:17
    |
 LL |         foo(|| {
    |             -- enclosing closure
-LL |             if cond() { break }
+LL |             if cond() {
-   |                         ^^^^^ cannot `break` inside of a closure
+LL |                 break;
+   |                 ^^^^^ cannot `break` inside of a closure
 
 error[E0267]: `continue` inside of a closure
-  --> $DIR/break-outside-loop.rs:18:25
+  --> $DIR/break-outside-loop.rs:33:17
    |
 LL |         foo(|| {
    |             -- enclosing closure
-LL |             if cond() { break }
+...
-LL |             if cond() { continue }
+LL |                 continue;
-   |                         ^^^^^^^^ cannot `continue` inside of a closure
+   |                 ^^^^^^^^ cannot `continue` inside of a closure
 
 error[E0268]: `break` outside of a loop or labeled block
-  --> $DIR/break-outside-loop.rs:24:25
+  --> $DIR/break-outside-loop.rs:40:25
    |
 LL |     let unconstrained = break;
    |                         ^^^^^ cannot `break` outside of a loop or labeled block
 
 error[E0267]: `break` inside of a closure
-  --> $DIR/break-outside-loop.rs:30:13
+  --> $DIR/break-outside-loop.rs:46:13
    |
 LL |         || {
    |         -- enclosing closure
 LL |             break 'lab;
    |             ^^^^^^^^^^ cannot `break` inside of a closure
 
-error: aborting due to 7 previous errors
+error[E0268]: `continue` outside of a loop
+  --> $DIR/break-outside-loop.rs:53:5
+   |
+LL |     continue
+   |     ^^^^^^^^ cannot `continue` outside of a loop
+
+error[E0268]: `break` outside of a loop or labeled block
+  --> $DIR/break-outside-loop.rs:55:5
+   |
+LL |     break
+   |     ^^^^^ cannot `break` outside of a loop or labeled block
+
+error: aborting due to 9 previous errors
 
 Some errors have detailed explanations: E0267, E0268, E0767.
 For more information about an error, try `rustc --explain E0267`.

tests/ui/generics/type-args-on-module-in-bound.rs

@@ -1,3 +1,4 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/22706>
 fn is_copy<T: ::std::marker<i32>::Copy>() {}
 //~^ ERROR type arguments are not allowed on module `marker` [E0109]
 fn main() {}

tests/ui/generics/type-args-on-module-in-bound.stderr

@@ -1,5 +1,5 @@
 error[E0109]: type arguments are not allowed on module `marker`
-  --> $DIR/issue-22706.rs:1:29
+  --> $DIR/type-args-on-module-in-bound.rs:2:29
    |
 LL | fn is_copy<T: ::std::marker<i32>::Copy>() {}
    |                      ------ ^^^ type argument not allowed

tests/ui/label/undeclared-label-span.rs

@@ -1,4 +1,5 @@
-// Make sure that label for continue and break is spanned correctly
+//! regression test for <https://github.com/rust-lang/rust/issues/28109>
+//! Make sure that label for continue and break is spanned correctly.
 
 fn main() {
     loop {

tests/ui/label/undeclared-label-span.stderr

@@ -1,11 +1,11 @@
 error[E0426]: use of undeclared label `'b`
-  --> $DIR/issue-28109.rs:6:9
+  --> $DIR/undeclared-label-span.rs:7:9
    |
 LL |         'b
    |         ^^ undeclared label `'b`
 
 error[E0426]: use of undeclared label `'c`
-  --> $DIR/issue-28109.rs:9:9
+  --> $DIR/undeclared-label-span.rs:10:9
    |
 LL |         'c
    |         ^^ undeclared label `'c`

tests/ui/macros/column-macro-collision.rs

@@ -1,3 +1,6 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/43057>
+//! user-defined `column!` macro must not shadow
+//! the built-in `column!()` used internally by `panic!()`.
 //@ check-pass
 #![allow(unused)]
 

tests/ui/mismatched_types/array-repeat-unit-struct.rs

@@ -1,3 +1,5 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/27008>
+
 struct S;
 
 fn main() {

tests/ui/mismatched_types/array-repeat-unit-struct.stderr

@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/issue-27008.rs:4:17
+  --> $DIR/array-repeat-unit-struct.rs:6:17
    |
 LL |     let b = [0; S];
    |                 ^ expected `usize`, found `S`

tests/ui/mismatched_types/vec-hashset-type-mismatch.rs

@@ -1,3 +1,4 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/24819>
 //@ dont-require-annotations: NOTE
 
 use std::collections::HashSet;
@@ -9,5 +10,4 @@ fn main() {
     //~| NOTE expected `&mut HashSet<u32>`, found `&mut Vec<_>`
 }
 
-fn foo(h: &mut HashSet<u32>) {
+fn foo(h: &mut HashSet<u32>) {}
-}

tests/ui/mismatched_types/vec-hashset-type-mismatch.stderr

@@ -1,5 +1,5 @@
 error[E0308]: mismatched types
-  --> $DIR/issue-24819.rs:7:9
+  --> $DIR/vec-hashset-type-mismatch.rs:8:9
    |
 LL |     foo(&mut v);
    |     --- ^^^^^^ expected `&mut HashSet<u32>`, found `&mut Vec<_>`
@@ -9,9 +9,9 @@ LL |     foo(&mut v);
    = note: expected mutable reference `&mut HashSet<u32>`
               found mutable reference `&mut Vec<_>`
 note: function defined here
-  --> $DIR/issue-24819.rs:12:4
+  --> $DIR/vec-hashset-type-mismatch.rs:13:4
    |
-LL | fn foo(h: &mut HashSet<u32>) {
+LL | fn foo(h: &mut HashSet<u32>) {}
    |    ^^^ --------------------
 
 error: aborting due to 1 previous error

tests/ui/privacy/privacy-sanity-2.rs

@@ -1,12 +0,0 @@
-enum Bird {
-    pub Duck,
-    //~^ ERROR visibility qualifiers are not permitted here
-    Goose,
-    pub(crate) Dove
-    //~^ ERROR visibility qualifiers are not permitted here
-}
-
-
-fn main() {
-    let y = Bird::Goose;
-}

tests/ui/privacy/privacy-sanity-2.stderr

@@ -1,19 +0,0 @@
-error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/issue-28433.rs:2:5
-   |
-LL |     pub Duck,
-   |     ^^^ help: remove the qualifier
-   |
-   = note: enum variants and their fields always share the visibility of the enum they are in
-
-error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/issue-28433.rs:5:5
-   |
-LL |     pub(crate) Dove
-   |     ^^^^^^^^^^ help: remove the qualifier
-   |
-   = note: enum variants and their fields always share the visibility of the enum they are in
-
-error: aborting due to 2 previous errors
-
-For more information about this error, try `rustc --explain E0449`.

tests/ui/privacy/privacy-sanity.rs

@@ -25,6 +25,14 @@ pub extern "C" { //~ ERROR visibility qualifiers are not permitted here
     pub static St: u8;
 }
 
+enum Bird {
+    pub Duck,
+    //~^ ERROR visibility qualifiers are not permitted here
+    pub(crate) Dove,
+    //~^ ERROR visibility qualifiers are not permitted here
+    Goose,
+}
+
 const MAIN: u8 = {
     pub trait Tr {
         fn f();
@@ -79,4 +87,11 @@ fn main() {
         pub fn f();
         pub static St: u8;
     }
+    enum Bird {
+        pub Duck,
+        //~^ ERROR visibility qualifiers are not permitted here
+        pub(crate) Dove,
+        //~^ ERROR visibility qualifiers are not permitted here
+        Goose,
+    }
 }

tests/ui/privacy/privacy-sanity.stderr

@@ -47,7 +47,23 @@ LL | pub extern "C" {
    = note: place qualifiers on individual foreign items instead
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:39:5
+  --> $DIR/privacy-sanity.rs:29:5
+   |
+LL |     pub Duck,
+   |     ^^^ help: remove the qualifier
+   |
+   = note: enum variants and their fields always share the visibility of the enum they are in
+
+error[E0449]: visibility qualifiers are not permitted here
+  --> $DIR/privacy-sanity.rs:31:5
+   |
+LL |     pub(crate) Dove,
+   |     ^^^^^^^^^^ help: remove the qualifier
+   |
+   = note: enum variants and their fields always share the visibility of the enum they are in
+
+error[E0449]: visibility qualifiers are not permitted here
+  --> $DIR/privacy-sanity.rs:47:5
    |
 LL |     pub impl Tr for S {
    |     ^^^ help: remove the qualifier
@@ -55,7 +71,7 @@ LL |     pub impl Tr for S {
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:40:9
+  --> $DIR/privacy-sanity.rs:48:9
    |
 LL |         pub fn f() {}
    |         ^^^ help: remove the qualifier
@@ -63,7 +79,7 @@ LL |         pub fn f() {}
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:41:9
+  --> $DIR/privacy-sanity.rs:49:9
    |
 LL |         pub const C: u8 = 0;
    |         ^^^ help: remove the qualifier
@@ -71,7 +87,7 @@ LL |         pub const C: u8 = 0;
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:42:9
+  --> $DIR/privacy-sanity.rs:50:9
    |
 LL |         pub type T = u8;
    |         ^^^ help: remove the qualifier
@@ -79,7 +95,7 @@ LL |         pub type T = u8;
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:44:5
+  --> $DIR/privacy-sanity.rs:52:5
    |
 LL |     pub impl S {
    |     ^^^ help: remove the qualifier
@@ -87,7 +103,7 @@ LL |     pub impl S {
    = note: place qualifiers on individual impl items instead
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:49:5
+  --> $DIR/privacy-sanity.rs:57:5
    |
 LL |     pub extern "C" {
    |     ^^^ help: remove the qualifier
@@ -95,7 +111,7 @@ LL |     pub extern "C" {
    = note: place qualifiers on individual foreign items instead
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:68:5
+  --> $DIR/privacy-sanity.rs:76:5
    |
 LL |     pub impl Tr for S {
    |     ^^^ help: remove the qualifier
@@ -103,7 +119,7 @@ LL |     pub impl Tr for S {
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:69:9
+  --> $DIR/privacy-sanity.rs:77:9
    |
 LL |         pub fn f() {}
    |         ^^^ help: remove the qualifier
@@ -111,7 +127,7 @@ LL |         pub fn f() {}
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:70:9
+  --> $DIR/privacy-sanity.rs:78:9
    |
 LL |         pub const C: u8 = 0;
    |         ^^^ help: remove the qualifier
@@ -119,7 +135,7 @@ LL |         pub const C: u8 = 0;
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:71:9
+  --> $DIR/privacy-sanity.rs:79:9
    |
 LL |         pub type T = u8;
    |         ^^^ help: remove the qualifier
@@ -127,7 +143,7 @@ LL |         pub type T = u8;
    = note: trait items always share the visibility of their trait
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:73:5
+  --> $DIR/privacy-sanity.rs:81:5
    |
 LL |     pub impl S {
    |     ^^^ help: remove the qualifier
@@ -135,13 +151,29 @@ LL |     pub impl S {
    = note: place qualifiers on individual impl items instead
 
 error[E0449]: visibility qualifiers are not permitted here
-  --> $DIR/privacy-sanity.rs:78:5
+  --> $DIR/privacy-sanity.rs:86:5
    |
 LL |     pub extern "C" {
    |     ^^^ help: remove the qualifier
    |
    = note: place qualifiers on individual foreign items instead
 
-error: aborting due to 18 previous errors
+error[E0449]: visibility qualifiers are not permitted here
+  --> $DIR/privacy-sanity.rs:91:9
+   |
+LL |         pub Duck,
+   |         ^^^ help: remove the qualifier
+   |
+   = note: enum variants and their fields always share the visibility of the enum they are in
+
+error[E0449]: visibility qualifiers are not permitted here
+  --> $DIR/privacy-sanity.rs:93:9
+   |
+LL |         pub(crate) Dove,
+   |         ^^^^^^^^^^ help: remove the qualifier
+   |
+   = note: enum variants and their fields always share the visibility of the enum they are in
+
+error: aborting due to 22 previous errors
 
 For more information about this error, try `rustc --explain E0449`.

tests/ui/privacy/private-extern-fn-visibility.rs

@@ -1,8 +1,11 @@
-//@ aux-build:issue-16725.rs
+//! regression test for <https://github.com/rust-lang/rust/issues/16725>
+//@ aux-build:private-extern-fn.rs
 
-extern crate issue_16725 as foo;
+extern crate private_extern_fn as foo;
 
 fn main() {
-    unsafe { foo::bar(); }
+    unsafe {
-    //~^ ERROR: function `bar` is private
+        foo::bar();
+        //~^ ERROR: function `bar` is private
+    }
 }

tests/ui/privacy/private-extern-fn-visibility.stderr

@@ -1,11 +1,11 @@
 error[E0603]: function `bar` is private
-  --> $DIR/issue-16725.rs:6:19
+  --> $DIR/private-extern-fn-visibility.rs:8:14
    |
-LL |     unsafe { foo::bar(); }
+LL |         foo::bar();
-   |                   ^^^ private function
+   |              ^^^ private function
    |
 note: the function `bar` is defined here
-  --> $DIR/auxiliary/issue-16725.rs:2:5
+  --> $DIR/auxiliary/private-extern-fn.rs:2:5
    |
 LL |     fn bar();
    |     ^^^^^^^^^

tests/ui/static/static-str-deref-ref.rs

@@ -1,3 +1,4 @@
+//! regression test for <https://github.com/rust-lang/rust/issues/22894>
 //@ build-pass
 #[allow(dead_code)]
 static X: &'static str = &*"";

tests/ui/threads-sendsync/std-sync-right-kind-impls-2.rs

@@ -1,25 +0,0 @@
-//@ run-pass
-#![allow(dead_code)]
-
-use std::{fs, net};
-
-fn assert_both<T: Send + Sync>() {}
-fn assert_send<T: Send>() {}
-
-fn main() {
-    assert_both::<fs::File>();
-    assert_both::<fs::Metadata>();
-    assert_both::<fs::ReadDir>();
-    assert_both::<fs::DirEntry>();
-    assert_both::<fs::OpenOptions>();
-    assert_both::<fs::Permissions>();
-
-    assert_both::<net::TcpStream>();
-    assert_both::<net::TcpListener>();
-    assert_both::<net::UdpSocket>();
-    assert_both::<net::SocketAddr>();
-    assert_both::<net::SocketAddrV4>();
-    assert_both::<net::SocketAddrV6>();
-    assert_both::<net::Ipv4Addr>();
-    assert_both::<net::Ipv6Addr>();
-}

tests/ui/threads-sendsync/std-sync-right-kind-impls.rs

@@ -1,6 +1,6 @@
 //@ run-pass
 
-use std::sync;
+use std::{fs, net, sync};
 
 fn assert_both<T: Sync + Send>() {}
 
@@ -12,4 +12,20 @@ fn main() {
     assert_both::<sync::Arc<()>>();
     assert_both::<sync::Weak<()>>();
     assert_both::<sync::Once>();
+
+    assert_both::<fs::File>();
+    assert_both::<fs::Metadata>();
+    assert_both::<fs::ReadDir>();
+    assert_both::<fs::DirEntry>();
+    assert_both::<fs::OpenOptions>();
+    assert_both::<fs::Permissions>();
+
+    assert_both::<net::TcpStream>();
+    assert_both::<net::TcpListener>();
+    assert_both::<net::UdpSocket>();
+    assert_both::<net::SocketAddr>();
+    assert_both::<net::SocketAddrV4>();
+    assert_both::<net::SocketAddrV6>();
+    assert_both::<net::Ipv4Addr>();
+    assert_both::<net::Ipv6Addr>();
 }