Auto merge of #99443 - jam1garner:mips-virt-feature, r=nagisa

[rust.git] / compiler / rustc_passes / src / check_attr.rs

diff --git a/compiler/rustc_passes/src/check_attr.rs b/compiler/rustc_passes/src/check_attr.rs
index a63af4159e8cbd075bae75ff2f6a6be653bc0663..ebe4d2e9dd0bd9d8702e01d99b057c75fc0c1d89 100644 (file)
--- a/compiler/rustc_passes/src/check_attr.rs
+++ b/compiler/rustc_passes/src/check_attr.rs
@@ -131,6 +131,7 @@ fn check_attributes(
                 | sym::rustc_if_this_changed
                 | sym::rustc_then_this_would_need => self.check_rustc_dirty_clean(&attr),
                 sym::cmse_nonsecure_entry => self.check_cmse_nonsecure_entry(attr, span, target),
+                sym::collapse_debuginfo => self.check_collapse_debuginfo(attr, span, target),
                 sym::const_trait => self.check_const_trait(attr, span, target),
                 sym::must_not_suspend => self.check_must_not_suspend(&attr, span, target),
                 sym::must_use => self.check_must_use(hir_id, &attr, span, target),
@@ -431,6 +432,19 @@ fn check_object_lifetime_default(&self, hir_id: HirId) {
         }
     }
 
+    /// Checks if `#[collapse_debuginfo]` is applied to a macro.
+    fn check_collapse_debuginfo(&self, attr: &Attribute, span: Span, target: Target) -> bool {
+        match target {
+            Target::MacroDef => true,
+            _ => {
+                self.tcx
+                    .sess
+                    .emit_err(errors::CollapseDebuginfo { attr_span: attr.span, defn_span: span });
+                false
+            }
+        }
+    }
+
     /// Checks if a `#[track_caller]` is applied to a non-naked function. Returns `true` if valid.
     fn check_track_caller(
         &self,
@@ -661,6 +675,7 @@ fn check_doc_alias_value(
             | Target::GlobalAsm
             | Target::TyAlias
             | Target::OpaqueTy
+            | Target::ImplTraitPlaceholder
             | Target::Enum
             | Target::Variant
             | Target::Struct
@@ -1651,6 +1666,7 @@ fn check_repr(
                         E0552,
                         "unrecognized representation hint"
                     )
+                    .help("valid reprs are `C`, `align`, `packed`, `transparent`, `simd`, `i8`, `u8`, `i16`, `u16`, `i32`, `u32`, `i64`, `u64`, `i128`, `u128`, `isize`, `usize`")
                     .emit();
 
                     continue;