Reorganize tests/ui/issues [14/N]

tests/ui/issues/issue-26997.rs → tests/ui/abi/extern/extern-c-method-return-struct.rs

@@ -1,4 +1,6 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/26997>.
 //@ build-pass
+
 #![allow(dead_code)]
 pub struct Foo {
     x: isize,

tests/ui/issues/issue-27054-primitive-binary-ops.rs → tests/ui/binop/binop-mutate-lhs-in-rhs.rs

@@ -1,4 +1,6 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/27054>.
 //@ run-pass
+
 fn main() {
     let x = &mut 1;
     assert_eq!(*x + { *x=2; 1 }, 2);

tests/ui/issues/issue-27105.rs → tests/ui/coercion/infer-coerce-unsized-trait-object.rs

@@ -1,4 +1,6 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/27105>.
 //@ check-pass
+
 use std::cell::RefCell;
 use std::rc::Rc;
 

tests/ui/issues/issue-26709.rs → tests/ui/drop/dst-coerce-unsized-drop.rs

@@ -1,4 +1,10 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/26709>.
+//! Test value is still getting dropped after unsized coerce.
+//!
+//! Fat pointer was passed in two immediate args, but the drop invocation
+//! used to accept one, which led to ICE.
 //@ run-pass
+
 struct Wrapper<'a, T: ?Sized>(&'a mut i32, #[allow(dead_code)] T);
 
 impl<'a, T: ?Sized> Drop for Wrapper<'a, T> {

tests/ui/issues/issue-26655.rs → tests/ui/drop/enum-destructor-on-unwind.rs

@@ -1,10 +1,10 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/26655>.
+//! Check that the destructors of simple enums are run on unwinding.
 //@ run-pass
 //@ needs-unwind
 //@ needs-threads
 //@ ignore-backends: gcc
 
-// Check that the destructors of simple enums are run on unwinding
-
 use std::sync::atomic::{Ordering, AtomicUsize};
 use std::thread;
 

tests/ui/issues/issue-26948.rs → tests/ui/functional-struct-update/fru-on-enum-variant.rs

@@ -1,3 +1,5 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/26948>.
+
 fn main() {
     enum Foo { A { x: u32 } }
     let orig = Foo::A { x: 5 };

tests/ui/issues/issue-26948.stderr → tests/ui/functional-struct-update/fru-on-enum-variant.stderr

@@ -1,5 +1,5 @@
 error[E0436]: functional record update syntax requires a struct
-  --> $DIR/issue-26948.rs:4:22
+  --> $DIR/fru-on-enum-variant.rs:6:22
    |
 LL |     Foo::A { x: 6, ..orig };
    |                      ^^^^

tests/ui/issues/issue-27042.rs → tests/ui/label/loop-label-included-in-span.rs

@@ -1,4 +1,5 @@
-// Regression test for #27042. Test that a loop's label is included in its span.
+//! Regression test for <https://github.com/rust-lang/rust/issues/27042>.
+//! Test that a loop's label is included in its span.
 
 fn main() {
     let _: i32 =

tests/ui/issues/issue-27042.stderr → tests/ui/label/loop-label-included-in-span.stderr

@@ -1,5 +1,5 @@
 warning: denote infinite loops with `loop { ... }`
-  --> $DIR/issue-27042.rs:8:9
+  --> $DIR/loop-label-included-in-span.rs:9:9
    |
 LL | /         'b:
 LL | |
@@ -9,7 +9,7 @@ LL | |         while true { break }; // but here we cite the whole loop
    = note: `#[warn(while_true)]` on by default
 
 error[E0308]: mismatched types
-  --> $DIR/issue-27042.rs:6:16
+  --> $DIR/loop-label-included-in-span.rs:7:16
    |
 LL |     let _: i32 =
    |         - expected because of this assignment
@@ -25,7 +25,7 @@ LL |         loop { break 42 };
    |                      ++
 
 error[E0308]: mismatched types
-  --> $DIR/issue-27042.rs:8:9
+  --> $DIR/loop-label-included-in-span.rs:9:9
    |
 LL |       let _: i32 =
    |              --- expected due to this
@@ -35,7 +35,7 @@ LL | |         while true { break }; // but here we cite the whole loop
    | |____________________________^ expected `i32`, found `()`
 
 error[E0308]: mismatched types
-  --> $DIR/issue-27042.rs:12:9
+  --> $DIR/loop-label-included-in-span.rs:13:9
    |
 LL | /         'c:
 LL | |         for _ in None { break }; // but here we cite the whole loop
@@ -44,7 +44,7 @@ LL | |         for _ in None { break }; // but here we cite the whole loop
    = note: `for` loops evaluate to unit type `()`
 
 error[E0308]: mismatched types
-  --> $DIR/issue-27042.rs:15:9
+  --> $DIR/loop-label-included-in-span.rs:16:9
    |
 LL |       let _: i32 =
    |              --- expected due to this

tests/ui/issues/issue-26802.rs → tests/ui/traits/default-method/trait-object-lifetime-bound.rs

@@ -1,4 +1,6 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/26802>.
 //@ run-pass
+
 trait Foo<'a> {
     fn bar<'b>(&self, x: &'b u8) -> u8 where 'a: 'b { *x+7 }
 }

tests/ui/issues/issue-26805.rs → tests/ui/traits/object/dyn-iterator-with-non-ord-item.rs

@@ -1,4 +1,6 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/26805>.
 //@ run-pass
+
 struct NonOrd;
 
 fn main() {

tests/ui/issues/issue-27078.rs → tests/ui/unsized/trait-method-unsized-self-param.rs

@@ -1,3 +1,5 @@
+//! Regression test for <https://github.com/rust-lang/rust/issues/27078>.
+
 trait Foo {
     const BAR: i32;
     fn foo(self) -> &'static i32 {

tests/ui/issues/issue-27078.stderr → tests/ui/unsized/trait-method-unsized-self-param.stderr

@@ -1,5 +1,5 @@
 error[E0277]: the size for values of type `Self` cannot be known at compilation time
-  --> $DIR/issue-27078.rs:3:12
+  --> $DIR/trait-method-unsized-self-param.rs:5:12
    |
 LL |     fn foo(self) -> &'static i32 {
    |            ^^^^ doesn't have a size known at compile-time