tests: issue-14309.* => repr-rust-is-undefined.*

Author: workingjubilee

src/tools/tidy/src/issues.txt

@@ -2744,7 +2744,6 @@ ui/lint/issue-111359.rs
 ui/lint/issue-112489.rs
 ui/lint/issue-117949.rs
 ui/lint/issue-121070-let-range.rs
-ui/lint/issue-14309.rs
 ui/lint/issue-14837.rs
 ui/lint/issue-17718-const-naming.rs
 ui/lint/issue-1866.rs

tests/ui/lint/issue-14309.rs renamed to tests/ui/lint/improper_ctypes/repr-rust-is-undefined.rs

@@ -1,6 +1,10 @@
 #![deny(improper_ctypes)]
 #![allow(dead_code)]
 
+// issue https://github.com/rust-lang/rust/issues/14309
+// Validates we lint on repr(Rust) structs and not repr(C) structs in FFI, to implement RFC 79:
+// https://rust-lang.github.io/rfcs/0079-undefined-struct-layout.html
+
 struct A {
     x: i32
 }

tests/ui/lint/issue-14309.stderr renamed to tests/ui/lint/improper_ctypes/repr-rust-is-undefined.stderr

@@ -1,74 +1,74 @@
 error: `extern` block uses type `A`, which is not FFI-safe
-  --> $DIR/issue-14309.rs:30:15
+  --> $DIR/repr-rust-is-undefined.rs:34:15
    |
 LL |     fn foo(x: A);
    |               ^ not FFI-safe
    |
    = help: consider adding a `#[repr(C)]` or `#[repr(transparent)]` attribute to this struct
    = note: this struct has unspecified layout
 note: the type is defined here
-  --> $DIR/issue-14309.rs:4:1
+  --> $DIR/repr-rust-is-undefined.rs:8:1
    |
 LL | struct A {
    | ^^^^^^^^
 note: the lint level is defined here
-  --> $DIR/issue-14309.rs:1:9
+  --> $DIR/repr-rust-is-undefined.rs:1:9
    |
 LL | #![deny(improper_ctypes)]
    |         ^^^^^^^^^^^^^^^
 
 error: `extern` block uses type `A`, which is not FFI-safe
-  --> $DIR/issue-14309.rs:31:15
+  --> $DIR/repr-rust-is-undefined.rs:35:15
    |
 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: the type is defined here
-  --> $DIR/issue-14309.rs:4:1
+  --> $DIR/repr-rust-is-undefined.rs:8:1
    |
 LL | struct A {
    | ^^^^^^^^
 
 error: `extern` block uses type `A`, which is not FFI-safe
-  --> $DIR/issue-14309.rs:33:15
+  --> $DIR/repr-rust-is-undefined.rs:37:15
    |
 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: the type is defined here
-  --> $DIR/issue-14309.rs:4:1
+  --> $DIR/repr-rust-is-undefined.rs:8:1
    |
 LL | struct A {
    | ^^^^^^^^
 
 error: `extern` block uses type `A`, which is not FFI-safe
-  --> $DIR/issue-14309.rs:34:16
+  --> $DIR/repr-rust-is-undefined.rs:38:16
    |
 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: the type is defined here
-  --> $DIR/issue-14309.rs:4:1
+  --> $DIR/repr-rust-is-undefined.rs:8:1
    |
 LL | struct A {
    | ^^^^^^^^
 
 error: `extern` block uses type `A`, which is not FFI-safe
-  --> $DIR/issue-14309.rs:36:16
+  --> $DIR/repr-rust-is-undefined.rs:40:16
    |
 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: the type is defined here
-  --> $DIR/issue-14309.rs:4:1
+  --> $DIR/repr-rust-is-undefined.rs:8:1
    |
 LL | struct A {
    | ^^^^^^^^