[COMMITTED 074/101] gccrs: BIR: Fix missed nodiscard

[arthur . cohen]

From: Jakub Dupak <d...@jakubdupak.com>

gcc/rust/ChangeLog:

        * checks/errors/borrowck/rust-bir-builder-internal.h: Replace nodiscard.
        * checks/errors/borrowck/rust-bir-place.h: Replace nodiscard.

Signed-off-by: Jakub Dupak <d...@jakubdupak.com>
---
 gcc/rust/checks/errors/borrowck/rust-bir-builder-internal.h | 4 ++--
 gcc/rust/checks/errors/borrowck/rust-bir-place.h            | 6 +++---
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/gcc/rust/checks/errors/borrowck/rust-bir-builder-internal.h 
b/gcc/rust/checks/errors/borrowck/rust-bir-builder-internal.h
index f33eb075244..cd611514776 100644
--- a/gcc/rust/checks/errors/borrowck/rust-bir-builder-internal.h
+++ b/gcc/rust/checks/errors/borrowck/rust-bir-builder-internal.h
@@ -261,12 +261,12 @@ protected: // CFG helpers
 
 protected: // HIR resolution helpers
   template <typename T>
-  [[nodiscard]] TyTy::BaseType *lookup_type (T &hir_node) const
+  WARN_UNUSED_RESULT TyTy::BaseType *lookup_type (T &hir_node) const
   {
     return lookup_type (hir_node.get_mappings ().get_hirid ());
   }
 
-  [[nodiscard]] TyTy::BaseType *lookup_type (HirId hirid) const
+  WARN_UNUSED_RESULT TyTy::BaseType *lookup_type (HirId hirid) const
   {
     TyTy::BaseType *type = nullptr;
     bool ok = ctx.tyctx.lookup_type (hirid, &type);
diff --git a/gcc/rust/checks/errors/borrowck/rust-bir-place.h 
b/gcc/rust/checks/errors/borrowck/rust-bir-place.h
index 66b131dee1a..8c2df47c11d 100644
--- a/gcc/rust/checks/errors/borrowck/rust-bir-place.h
+++ b/gcc/rust/checks/errors/borrowck/rust-bir-place.h
@@ -148,9 +148,9 @@ public:
       0);
   }
 
-  [[nodiscard]] PlaceId lookup_or_add_path (Place::Kind kind,
-                                           TyTy::BaseType *tyty,
-                                           PlaceId parent, size_t id = 0)
+  WARN_UNUSED_RESULT PlaceId lookup_or_add_path (Place::Kind kind,
+                                                TyTy::BaseType *tyty,
+                                                PlaceId parent, size_t id = 0)
   {
     PlaceId current = 0;
     if (parent < places.size ())
-- 
2.42.1