Fix a gcc warning.

In r181677 I removed this llvm_unreachable and it introduced a gcc
warning. Add it back.

Thanks to Patrik Hägglund for noticing it.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@181704 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/AST/ASTContext.cpp b/lib/AST/ASTContext.cpp
index 9901080101f98cae2a2621cec66592be932af2b0..49e3639e939878a34e6608ce7913b32eeb45279e 100644 (file)
--- a/lib/AST/ASTContext.cpp
+++ b/lib/AST/ASTContext.cpp
@@ -7838,6 +7838,8 @@ GVALinkage ASTContext::GetGVALinkageForVariable(const VarDecl *VD) {
   case TSK_ImplicitInstantiation:
     return GVA_TemplateInstantiation;
   }
+
+  llvm_unreachable("Invalid Linkage!");
 }
 
 bool ASTContext::DeclMustBeEmitted(const Decl *D) {