Do not account for inner/outer attr

Author: estebank

src/librustc_lint/builtin.rs

@@ -687,18 +687,8 @@ impl EarlyLintPass for BadRepr {
     fn check_attribute(&mut self, cx: &EarlyContext, attr: &ast::Attribute) {
         if attr.name() == "repr" {
             let list = attr.meta_item_list();
-            let outer = match attr.style {
-                ast::AttrStyle::Outer => true,
-                ast::AttrStyle::Inner => false,
-            };
 
-            let repr_str = move |lit: &str| {
-                if outer {
-                    format!("#[repr({})]", lit)
-                } else {
-                    format!("#![repr({})]", lit)
-                }
-            };
+            let repr_str = |lit: &str| { format!("#[repr({})]", lit) };
 
             // Emit warnings with `repr` either has a literal assignment (`#[repr = "C"]`) or
             // no hints (``#[repr]`)

src/test/ui/feature-gate/issue-43106-gating-of-builtin-attrs.stderr

@@ -193,7 +193,7 @@ LL |     mod inner { #![repr="3900"] }
    |                 ^^^^^^^^^^^^^^^ needs a hint
    |
    = note: #[warn(bad_repr)] on by default
-   = help: valid hints include `#![repr(C)]`, `#![repr(packed)]`, `#![repr(rust)]` and `#![repr(transparent)]`
+   = help: valid hints include `#[repr(C)]`, `#[repr(packed)]`, `#[repr(rust)]` and `#[repr(transparent)]`
    = note: for more information, visit <https://doc.rust-lang.org/reference/type-layout.html>
 
 warning: `repr` attribute isn't configurable with a literal
@@ -238,7 +238,7 @@ warning: `repr` attribute isn't configurable with a literal
 LL | #![repr                       = "3900"]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ needs a hint
    |
-   = help: valid hints include `#![repr(C)]`, `#![repr(packed)]`, `#![repr(rust)]` and `#![repr(transparent)]`
+   = help: valid hints include `#[repr(C)]`, `#[repr(packed)]`, `#[repr(rust)]` and `#[repr(transparent)]`
    = note: for more information, visit <https://doc.rust-lang.org/reference/type-layout.html>
 
 warning: unused attribute