Rollup merge of rust-lang#132376 - ehuss:reference-input, r=traviscross

Annotate `input` reference tests

This adds test annotations for rules in the [input chapter](https://doc.rust-lang.org/nightly/reference/input-format.html) of the reference.

Author: matthiaskrgr

Diff for: tests/ui/json/json-bom-plus-crlf-multifile.rs

@@ -1,6 +1,8 @@
 // (This line has BOM so it's ignored by compiletest for directives)
 //
 //@ compile-flags: --json=diagnostic-short --error-format=json
+//@ reference: input.byte-order-mark
+//@ reference: input.crlf
 // ignore-tidy-cr
 
 #[path = "json-bom-plus-crlf-multifile-aux.rs"]

Diff for: tests/ui/json/json-bom-plus-crlf.rs

@@ -1,6 +1,8 @@
 // (This line has BOM so it's ignored by compiletest for directives)
 //
 //@ compile-flags: --json=diagnostic-short --error-format=json
+//@ reference: input.byte-order-mark
+//@ reference: input.crlf
 // ignore-tidy-cr
 
 // For easier verifying, the byte offsets in this file should match those

Diff for: tests/ui/json/json-bom-plus-crlf.stderr

@@ -24,7 +24,7 @@ This error occurs when an expression was used in a place where the compiler
 expected an expression of a different type. It can occur in several cases, the
 most common being when calling a function and passing an argument which has a
 different type than the matching type in the function declaration.
-"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":607,"byte_end":608,"line_start":16,"line_end":16,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":22,"highlight_end":23}],"label":"expected `String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":598,"byte_end":604,"line_start":16,"line_end":16,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":608,"byte_end":608,"line_start":16,"line_end":16,"column_start":23,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":23,"highlight_end":23}],"label":null,"suggested_replacement":".to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:16:22: error[E0308]: mismatched types: expected `String`, found integer
+"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":672,"byte_end":673,"line_start":18,"line_end":18,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":22,"highlight_end":23}],"label":"expected `String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":663,"byte_end":669,"line_start":18,"line_end":18,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":673,"byte_end":673,"line_start":18,"line_end":18,"column_start":23,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1;  // Error in the middle of line.","highlight_start":23,"highlight_end":23}],"label":null,"suggested_replacement":".to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:18:22: error[E0308]: mismatched types: expected `String`, found integer
 "}
 {"$message_type":"diagnostic","message":"mismatched types","code":{"code":"E0308","explanation":"Expected type did not match the received type.
 
@@ -52,7 +52,7 @@ This error occurs when an expression was used in a place where the compiler
 expected an expression of a different type. It can occur in several cases, the
 most common being when calling a function and passing an argument which has a
 different type than the matching type in the function declaration.
-"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":667,"byte_end":668,"line_start":18,"line_end":18,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":22,"highlight_end":23}],"label":"expected `String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":658,"byte_end":664,"line_start":18,"line_end":18,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String = 1","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":668,"byte_end":668,"line_start":18,"line_end":18,"column_start":23,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":23,"highlight_end":23}],"label":null,"suggested_replacement":".to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:18:22: error[E0308]: mismatched types: expected `String`, found integer
+"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":732,"byte_end":733,"line_start":20,"line_end":20,"column_start":22,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":22,"highlight_end":23}],"label":"expected `String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":723,"byte_end":729,"line_start":20,"line_end":20,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String = 1","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":733,"byte_end":733,"line_start":20,"line_end":20,"column_start":23,"column_end":23,"is_primary":true,"text":[{"text":"    let s : String = 1","highlight_start":23,"highlight_end":23}],"label":null,"suggested_replacement":".to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:20:22: error[E0308]: mismatched types: expected `String`, found integer
 "}
 {"$message_type":"diagnostic","message":"mismatched types","code":{"code":"E0308","explanation":"Expected type did not match the received type.
 
@@ -80,7 +80,7 @@ This error occurs when an expression was used in a place where the compiler
 expected an expression of a different type. It can occur in several cases, the
 most common being when calling a function and passing an argument which has a
 different type than the matching type in the function declaration.
-"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":731,"byte_end":732,"line_start":22,"line_end":22,"column_start":1,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":1,"highlight_end":2}],"label":"expected `String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":721,"byte_end":727,"line_start":21,"line_end":21,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String =","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":732,"byte_end":732,"line_start":22,"line_end":22,"column_start":2,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":2,"highlight_end":2}],"label":null,"suggested_replacement":".to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:22:1: error[E0308]: mismatched types: expected `String`, found integer
+"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":796,"byte_end":797,"line_start":24,"line_end":24,"column_start":1,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":1,"highlight_end":2}],"label":"expected `String`, found integer","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":786,"byte_end":792,"line_start":23,"line_end":23,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String =","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[{"message":"try using a conversion method","code":null,"level":"help","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":797,"byte_end":797,"line_start":24,"line_end":24,"column_start":2,"column_end":2,"is_primary":true,"text":[{"text":"1;  // Error after the newline.","highlight_start":2,"highlight_end":2}],"label":null,"suggested_replacement":".to_string()","suggestion_applicability":"MaybeIncorrect","expansion":null}],"children":[],"rendered":null}],"rendered":"$DIR/json-bom-plus-crlf.rs:24:1: error[E0308]: mismatched types: expected `String`, found integer
 "}
 {"$message_type":"diagnostic","message":"mismatched types","code":{"code":"E0308","explanation":"Expected type did not match the received type.
 
@@ -108,7 +108,7 @@ This error occurs when an expression was used in a place where the compiler
 expected an expression of a different type. It can occur in several cases, the
 most common being when calling a function and passing an argument which has a
 different type than the matching type in the function declaration.
-"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":787,"byte_end":795,"line_start":24,"line_end":25,"column_start":22,"column_end":6,"is_primary":true,"text":[{"text":"    let s : String = (","highlight_start":22,"highlight_end":23},{"text":"    );  // Error spanning the newline.","highlight_start":1,"highlight_end":6}],"label":"expected `String`, found `()`","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":778,"byte_end":784,"line_start":24,"line_end":24,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String = (","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[],"rendered":"$DIR/json-bom-plus-crlf.rs:24:22: error[E0308]: mismatched types: expected `String`, found `()`
+"},"level":"error","spans":[{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":852,"byte_end":860,"line_start":26,"line_end":27,"column_start":22,"column_end":6,"is_primary":true,"text":[{"text":"    let s : String = (","highlight_start":22,"highlight_end":23},{"text":"    );  // Error spanning the newline.","highlight_start":1,"highlight_end":6}],"label":"expected `String`, found `()`","suggested_replacement":null,"suggestion_applicability":null,"expansion":null},{"file_name":"$DIR/json-bom-plus-crlf.rs","byte_start":843,"byte_end":849,"line_start":26,"line_end":26,"column_start":13,"column_end":19,"is_primary":false,"text":[{"text":"    let s : String = (","highlight_start":13,"highlight_end":19}],"label":"expected due to this","suggested_replacement":null,"suggestion_applicability":null,"expansion":null}],"children":[],"rendered":"$DIR/json-bom-plus-crlf.rs:26:22: error[E0308]: mismatched types: expected `String`, found `()`
 "}
 {"$message_type":"diagnostic","message":"aborting due to 4 previous errors","code":null,"level":"error","spans":[],"children":[],"rendered":"error: aborting due to 4 previous errors
 "}

Diff for: tests/ui/lexer/lexer-crlf-line-endings-string-literal-doc-comment.rs

@@ -1,4 +1,5 @@
 //@ run-pass
+//@ reference: input.crlf
 // ignore-tidy-cr
 // ignore-tidy-cr (repeated again because of tidy bug)
 // license is ignored because tidy can't handle the CRLF here properly.

Diff for: tests/ui/macros/not-utf8.rs

@@ -1,4 +1,6 @@
 //@ error-pattern: did not contain valid UTF-8
+//@ reference: input.encoding.utf8
+//@ reference: input.encoding.invalid
 
 fn foo() {
     include!("not-utf8.bin")

Diff for: tests/ui/macros/not-utf8.stderr

@@ -1,5 +1,5 @@
 error: couldn't read $DIR/not-utf8.bin: stream did not contain valid UTF-8
-  --> $DIR/not-utf8.rs:4:5
+  --> $DIR/not-utf8.rs:6:5
    |
 LL |     include!("not-utf8.bin")
    |     ^^^^^^^^^^^^^^^^^^^^^^^^

Diff for: tests/ui/parser/shebang/issue-71471-ignore-tidy.rs

@@ -1,2 +1,4 @@
 
 #!B //~ expected `[`, found `B`
+
+//@ reference: input.shebang

Diff for: tests/ui/parser/shebang/multiline-attrib.rs

@@ -1,6 +1,7 @@
 #!
 [allow(unused_variables)]
 //@ check-pass
+//@ reference: input.shebang.inner-attribute
 
 fn main() {
     let x = 5;

Diff for: tests/ui/parser/shebang/regular-attrib.rs

@@ -1,5 +1,6 @@
 #![allow(unused_variables)]
 //@ check-pass
+//@ reference: input.shebang.inner-attribute
 fn main() {
     let x = 5;
 }

Diff for: tests/ui/parser/shebang/shebang-and-attrib.rs

@@ -1,6 +1,7 @@
 #!/usr/bin/env run-cargo-script
 
 //@ check-pass
+//@ reference: input.shebang.inner-attribute
 #![allow(unused_variables)]
 
 

Diff for: tests/ui/parser/shebang/shebang-comment.rs

@@ -1,6 +1,7 @@
 #!//bin/bash
 
 //@ check-pass
+//@ reference: input.shebang
 fn main() {
     println!("a valid shebang (that is also a rust comment)")
 }

Diff for: tests/ui/parser/shebang/shebang-doc-comment.rs

@@ -1,3 +1,5 @@
 #!///bin/bash
 [allow(unused_variables)]
 //~^ ERROR expected item, found `[`
+
+//@ reference: input.shebang.inner-attribute

Diff for: tests/ui/parser/shebang/shebang-empty.rs

@@ -1,4 +1,5 @@
 #!
 
 //@ check-pass
+//@ reference: input.shebang
 fn main() {}

Diff for: tests/ui/parser/shebang/shebang-must-start-file.rs

@@ -1,6 +1,8 @@
 // something on the first line for tidy
 #!/bin/bash  //~ expected `[`, found `/`
 
+//@ reference: input.shebang
+
 fn main() {
     println!("ok!");
 }

Diff for: tests/ui/parser/shebang/shebang-space.rs

@@ -1,5 +1,6 @@
 #!    
 
 //@ check-pass
+//@ reference: input.shebang
 // ignore-tidy-end-whitespace
 fn main() {}

Diff for: tests/ui/parser/shebang/sneaky-attrib.rs

@@ -11,6 +11,7 @@
 [allow(unused_variables)]
 
 //@ check-pass
+//@ reference: input.shebang.inner-attribute
 fn main() {
     let x = 5;
 }

Diff for: tests/ui/parser/shebang/valid-shebang.rs

@@ -1,6 +1,7 @@
 #!/usr/bin/env run-cargo-script
 
 //@ check-pass
+//@ reference: input.shebang
 fn main() {
     println!("Hello World!");
 }

Diff for: tests/ui/parser/utf16-be-without-bom.rs

@@ -1,109 +1,109 @@
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:1
+  --> $DIR/utf16-be-without-bom.rs:5:1
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    | ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:3
+  --> $DIR/utf16-be-without-bom.rs:5:3
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |   ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:5
+  --> $DIR/utf16-be-without-bom.rs:5:5
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |     ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:7
+  --> $DIR/utf16-be-without-bom.rs:5:7
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |       ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:9
+  --> $DIR/utf16-be-without-bom.rs:5:9
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |         ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:11
+  --> $DIR/utf16-be-without-bom.rs:5:11
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |           ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:13
+  --> $DIR/utf16-be-without-bom.rs:5:13
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |             ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:15
+  --> $DIR/utf16-be-without-bom.rs:5:15
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |               ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:17
+  --> $DIR/utf16-be-without-bom.rs:5:17
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |                 ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:19
+  --> $DIR/utf16-be-without-bom.rs:5:19
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |                   ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:21
+  --> $DIR/utf16-be-without-bom.rs:5:21
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |                     ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:23
+  --> $DIR/utf16-be-without-bom.rs:5:23
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |                       ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: unknown start of token: \u{0}
-  --> $DIR/utf16-be-without-bom.rs:4:25
+  --> $DIR/utf16-be-without-bom.rs:5:25
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |                         ^
    |
    = help: source files must contain UTF-8 encoded text, unexpected null bytes might occur when a different encoding is used
 
 error: expected one of `!` or `::`, found `n`
-  --> $DIR/utf16-be-without-bom.rs:4:4
+  --> $DIR/utf16-be-without-bom.rs:5:4
    |
 LL | ␀f␀n␀ ␀m␀a␀i␀n␀(␀)␀ ␀{␀}␀
    |    ^ expected one of `!` or `::`