2 files changed, 7 insertions, 0 deletions
diff --git a/clang/lib/AST/Decl.cpp b/clang/lib/AST/Decl.cpp
index 986430595bd..2987e7c276a 100644
--- a/clang/lib/AST/Decl.cpp
+++ b/clang/lib/AST/Decl.cpp
@@ -1761,6 +1761,9 @@ bool FunctionDecl::isReservedGlobalPlacementOperator() const {
 }
 
 bool FunctionDecl::hasCLanguageLinkage() const {
+  if (getBuiltinID())
+    return true;
+
   return hasCLanguageLinkageTemplate(*this);
 }
 
diff --git a/clang/test/SemaCXX/builtins.cpp b/clang/test/SemaCXX/builtins.cpp
index 6b055cff640..5d61690c16e 100644
--- a/clang/test/SemaCXX/builtins.cpp
+++ b/clang/test/SemaCXX/builtins.cpp
@@ -20,3 +20,7 @@ template int equal<&__builtin_strcmp>(const char*, const char*); // expected-err
 void f2() {
   __builtin_isnan; // expected-error {{builtin functions must be directly called}}
 }
+
+// pr14895
+typedef __typeof(sizeof(int)) size_t;
+extern "C" void *__builtin_alloca (size_t);