Rollup merge of #55834 - ogoffart:union-abi, r=eddyb

[rust.git] / src / librustc / ty / mod.rs

diff --git a/src/librustc/ty/mod.rs b/src/librustc/ty/mod.rs
index 96f4b1ef8e32aed3c141e649997fce9140952d5f..a474065b5cd55fe1911c8a1de888eb53ddf52ac3 100644 (file)
--- a/src/librustc/ty/mod.rs
+++ b/src/librustc/ty/mod.rs
@@ -1998,6 +1998,12 @@ pub fn inhibit_enum_layout_opt(&self) -> bool {
     pub fn inhibit_struct_field_reordering_opt(&self) -> bool {
         !(self.flags & ReprFlags::IS_UNOPTIMISABLE).is_empty() || (self.pack == 1)
     }
+
+    /// Returns true if this `#[repr()]` should inhibit union abi optimisations
+    pub fn inhibit_union_abi_opt(&self) -> bool {
+        self.c()
+    }
+
 }
 
 impl<'a, 'gcx, 'tcx> AdtDef {