Check for unavailable declarations in Sema::CanUseDecl.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@142145 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/Sema/SemaExpr.cpp b/lib/Sema/SemaExpr.cpp
index 79db724f1a..0a0009e602 100644
--- a/lib/Sema/SemaExpr.cpp
+++ b/lib/Sema/SemaExpr.cpp
@@ -53,6 +53,12 @@ bool Sema::CanUseDecl(NamedDecl *D) {
     if (FD->isDeleted())
       return false;
   }
+
+  // See if this function is unavailable.
+  if (D->getAvailability() == AR_Unavailable &&
+      cast<Decl>(CurContext)->getAvailability() != AR_Unavailable)
+    return false;
+
   return true;
 }