Fix target list of link_section

Signed-off-by: Jonathan Brouwer <jonathantbrouwer@gmail.com>
(cherry picked from commit 4787834)

Author: JonathanBrouwer

compiler/rustc_attr_parsing/src/attributes/link_attrs.rs

@@ -466,8 +466,14 @@ impl<S: Stage> SingleAttributeParser<S> for LinkSectionParser {
     const PATH: &[Symbol] = &[sym::link_section];
     const ATTRIBUTE_ORDER: AttributeOrder = AttributeOrder::KeepInnermost;
     const ON_DUPLICATE: OnDuplicate<S> = OnDuplicate::WarnButFutureError;
-    const ALLOWED_TARGETS: AllowedTargets =
-        AllowedTargets::AllowListWarnRest(&[Allow(Target::Static), Allow(Target::Fn)]);
+    const ALLOWED_TARGETS: AllowedTargets = AllowedTargets::AllowListWarnRest(&[
+        Allow(Target::Static),
+        Allow(Target::Fn),
+        Allow(Target::Method(MethodKind::Inherent)),
+        Allow(Target::Method(MethodKind::Trait { body: false })),
+        Allow(Target::Method(MethodKind::Trait { body: true })),
+        Allow(Target::Method(MethodKind::TraitImpl)),
+    ]);
     const TEMPLATE: AttributeTemplate = template!(
         NameValueStr: "name",
         "https://doc.rust-lang.org/reference/abi.html#the-link_section-attribute"

tests/ui/attributes/attr-on-mac-call.stderr

@@ -82,7 +82,7 @@ LL |     #[link_section = "x"]
    |     ^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[link_ordinal]` attribute cannot be used on macro calls
   --> $DIR/attr-on-mac-call.rs:33:5

tests/ui/feature-gates/issue-43106-gating-of-builtin-attrs.stderr

@@ -1219,7 +1219,7 @@ LL | #[link_section = "1800"]
    | ^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[link_section]` attribute cannot be used on modules
   --> $DIR/issue-43106-gating-of-builtin-attrs.rs:665:17
@@ -1228,7 +1228,7 @@ LL |     mod inner { #![link_section="1800"] }
    |                 ^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[link_section]` attribute cannot be used on structs
   --> $DIR/issue-43106-gating-of-builtin-attrs.rs:673:5
@@ -1237,7 +1237,7 @@ LL |     #[link_section = "1800"] struct S;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[link_section]` attribute cannot be used on type aliases
   --> $DIR/issue-43106-gating-of-builtin-attrs.rs:679:5
@@ -1246,7 +1246,7 @@ LL |     #[link_section = "1800"] type T = S;
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[link_section]` attribute cannot be used on inherent impl blocks
   --> $DIR/issue-43106-gating-of-builtin-attrs.rs:685:5
@@ -1255,7 +1255,7 @@ LL |     #[link_section = "1800"] impl S { }
    |     ^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[must_use]` attribute cannot be used on modules
   --> $DIR/issue-43106-gating-of-builtin-attrs.rs:746:1
@@ -1555,7 +1555,7 @@ LL | #![link_section = "1800"]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
-   = help: `#[link_section]` can be applied to statics and functions
+   = help: `#[link_section]` can be applied to functions and statics
 
 warning: `#[must_use]` attribute cannot be used on crates
   --> $DIR/issue-43106-gating-of-builtin-attrs.rs:84:1