Rollup merge of rust-lang#114088 - oli-obk:syn, r=davidtwco

Bump syn dependency

r? `@davidtwco` because this affects diagnostics derive diagnostics (yes this sentence is grammatically correct)

Author: GuillaumeGomez

Cargo.lock

@@ -220,7 +220,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -502,7 +502,7 @@ dependencies = [
  "heck",
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -527,7 +527,7 @@ dependencies = [
  "regex",
  "rustc_tools_util",
  "serde",
- "syn 2.0.8",
+ "syn 2.0.27",
  "tempfile",
  "termize",
  "tester",
@@ -842,7 +842,7 @@ version = "0.1.73"
 dependencies = [
  "itertools",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -943,7 +943,7 @@ checksum = "487585f4d0c6655fe74905e2504d8ad6908e4db67f744eb140876906c2f3175d"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -1309,7 +1309,7 @@ checksum = "89ca545a94061b6365f2c7355b4b32bd20df3ff95f02da9329b34ccc3bd6ee72"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -2456,7 +2456,7 @@ checksum = "a948666b637a0f465e8564c73e89d4dde00d72d4d473cc972f390fc3dcee7d9c"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -2643,7 +2643,7 @@ dependencies = [
  "pest_meta",
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -3586,7 +3586,7 @@ dependencies = [
  "fluent-syntax",
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
  "unic-langid",
 ]
 
@@ -3855,7 +3855,7 @@ version = "0.1.0"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
  "synstructure 0.13.0",
 ]
 
@@ -4462,7 +4462,7 @@ dependencies = [
  "proc-macro2",
  "quote",
  "serde",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -4629,7 +4629,7 @@ checksum = "d9735b638ccc51c28bf6914d90a2e9725b377144fc612c49a611fddd1b631d68"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -4910,9 +4910,9 @@ dependencies = [
 
 [[package]]
 name = "syn"
-version = "2.0.8"
+version = "2.0.27"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bcc02725fd69ab9f26eab07fad303e2497fad6fb9eba4f96c4d1687bdf704ad9"
+checksum = "b60f673f44a8255b9c8c657daf66a596d435f2da81a555b06dc644d080ba45e0"
 dependencies = [
  "proc-macro2",
  "quote",
@@ -4939,7 +4939,7 @@ checksum = "285ba80e733fac80aa4270fbcdf83772a79b80aa35c97075320abfee4a915b06"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
  "unicode-xid",
 ]
 
@@ -5089,7 +5089,7 @@ checksum = "f9456a42c5b0d803c8cd86e73dd7cc9edd429499f37a3550d286d5e86720569f"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -5310,7 +5310,7 @@ checksum = "5f4f31f56159e98206da9efd823404b79b6ef3143b4a7ab76e67b1751b25a4ab"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
 ]
 
 [[package]]
@@ -5740,7 +5740,7 @@ dependencies = [
  "once_cell",
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
  "wasm-bindgen-shared",
 ]
 
@@ -5774,7 +5774,7 @@ checksum = "54681b18a46765f095758388f2d0cf16eb8d4169b639ab575a8f5693af210c7b"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.8",
+ "syn 2.0.27",
  "wasm-bindgen-backend",
  "wasm-bindgen-shared",
 ]

compiler/rustc_macros/Cargo.toml

@@ -8,7 +8,6 @@ proc-macro = true
 
 [dependencies]
 synstructure = "0.13.0"
-# FIXME(Nilstrieb): Updating this causes changes in the diagnostics output.
-syn = { version = "=2.0.8", features = ["full"] }
+syn = { version = "2.0.9", features = ["full"] }
 proc-macro2 = "1"
 quote = "1"

tests/ui-fulldeps/session-diagnostic/diagnostic-derive.rs

@@ -53,7 +53,7 @@ enum DiagnosticOnEnum {
 #[derive(Diagnostic)]
 #[diag(no_crate_example, code = "E0123")]
 #[diag = "E0123"]
-//~^ ERROR expected parentheses: #[diag(...)]
+//~^ ERROR failed to resolve: maybe a missing crate `core`
 struct WrongStructAttrStyle {}
 
 #[derive(Diagnostic)]
@@ -644,7 +644,7 @@ struct MissingCodeInSuggestion {
 //~| ERROR cannot find attribute `multipart_suggestion` in this scope
 #[multipart_suggestion()]
 //~^ ERROR cannot find attribute `multipart_suggestion` in this scope
-//~| ERROR unexpected end of input, unexpected token in nested attribute, expected ident
+//~| ERROR `#[multipart_suggestion(...)]` is not a valid attribute
 struct MultipartSuggestion {
     #[multipart_suggestion(no_crate_suggestion)]
     //~^ ERROR `#[multipart_suggestion(...)]` is not a valid attribute
@@ -797,15 +797,15 @@ struct SuggestionsNoItem {
 struct SuggestionsInvalidItem {
     #[suggestion(code(foo))]
     //~^ ERROR `code(...)` must contain only string literals
-    //~| ERROR unexpected token
+    //~| ERROR failed to resolve: maybe a missing crate `core`
     sub: Span,
 }
 
 #[derive(Diagnostic)] //~ ERROR cannot find value `__code_34` in this scope
 #[diag(no_crate_example)]
 struct SuggestionsInvalidLiteral {
     #[suggestion(code = 3)]
-    //~^ ERROR expected string literal
+    //~^ ERROR failed to resolve: maybe a missing crate `core`
     sub: Span,
 }
 

tests/ui-fulldeps/session-diagnostic/diagnostic-derive.stderr

@@ -20,12 +20,6 @@ LL |     Bar,
    |
    = help: specify the slug as the first argument to the `#[diag(...)]` attribute, such as `#[diag(hir_analysis_example_error)]`
 
-error: expected parentheses: #[diag(...)]
-  --> $DIR/diagnostic-derive.rs:55:8
-   |
-LL | #[diag = "E0123"]
-   |        ^
-
 error: `#[nonsense(...)]` is not a valid attribute
   --> $DIR/diagnostic-derive.rs:60:1
    |
@@ -476,6 +470,14 @@ LL | #[multipart_suggestion(no_crate_suggestion)]
    |
    = help: consider creating a `Subdiagnostic` instead
 
+error: `#[multipart_suggestion(...)]` is not a valid attribute
+  --> $DIR/diagnostic-derive.rs:645:1
+   |
+LL | #[multipart_suggestion()]
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^
+   |
+   = help: consider creating a `Subdiagnostic` instead
+
 error: `#[multipart_suggestion(...)]` is not a valid attribute
   --> $DIR/diagnostic-derive.rs:649:5
    |
@@ -484,12 +486,6 @@ LL |     #[multipart_suggestion(no_crate_suggestion)]
    |
    = help: consider creating a `Subdiagnostic` instead
 
-error: unexpected end of input, unexpected token in nested attribute, expected ident
-  --> $DIR/diagnostic-derive.rs:645:24
-   |
-LL | #[multipart_suggestion()]
-   |                        ^
-
 error: `#[suggestion(...)]` is not a valid attribute
   --> $DIR/diagnostic-derive.rs:657:1
    |
@@ -550,18 +546,6 @@ error: `code(...)` must contain only string literals
 LL |     #[suggestion(code(foo))]
    |                       ^^^
 
-error: unexpected token
-  --> $DIR/diagnostic-derive.rs:798:23
-   |
-LL |     #[suggestion(code(foo))]
-   |                       ^^^
-
-error: expected string literal
-  --> $DIR/diagnostic-derive.rs:807:25
-   |
-LL |     #[suggestion(code = 3)]
-   |                         ^
-
 error: `#[suggestion(...)]` is not a valid attribute
   --> $DIR/diagnostic-derive.rs:822:5
    |
@@ -572,6 +556,24 @@ LL |     #[suggestion(no_crate_suggestion, code = "")]
    = help: to show a suggestion consisting of multiple parts, use a `Subdiagnostic` annotated with `#[multipart_suggestion(...)]`
    = help: to show a variable set of suggestions, use a `Vec` of `Subdiagnostic`s annotated with `#[suggestion(...)]`
 
+error[E0433]: failed to resolve: maybe a missing crate `core`?
+  --> $DIR/diagnostic-derive.rs:55:8
+   |
+LL | #[diag = "E0123"]
+   |        ^ maybe a missing crate `core`?
+
+error[E0433]: failed to resolve: maybe a missing crate `core`?
+  --> $DIR/diagnostic-derive.rs:798:23
+   |
+LL |     #[suggestion(code(foo))]
+   |                       ^^^ maybe a missing crate `core`?
+
+error[E0433]: failed to resolve: maybe a missing crate `core`?
+  --> $DIR/diagnostic-derive.rs:807:25
+   |
+LL |     #[suggestion(code = 3)]
+   |                         ^ maybe a missing crate `core`?
+
 error: cannot find attribute `nonsense` in this scope
   --> $DIR/diagnostic-derive.rs:60:3
    |
@@ -656,5 +658,5 @@ note: required by a bound in `DiagnosticBuilder::<'a, G>::set_arg`
 
 error: aborting due to 84 previous errors
 
-Some errors have detailed explanations: E0277, E0425.
+Some errors have detailed explanations: E0277, E0425, E0433.
 For more information about an error, try `rustc --explain E0277`.