Delay attribute checking until auto types are deduced

Checking in ActOnVariableDeclarator computes and caches the linkage using
the non-deduced auto type which defaults to external linkage. Depending on
how the auto type is deduced linkage can change and conflict with the
cached linkage, hitting asserts.

llvm-svn: 199774

1 files changed, 4 insertions, 2 deletions

diff --git a/clang/test/SemaCXX/attr-weak.cpp b/clang/test/SemaCXX/attr-weak.cpp
index 2000e7fc683..8ba3a954282 100644
--- a/clang/test/SemaCXX/attr-weak.cpp
+++ b/clang/test/SemaCXX/attr-weak.cpp
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify %s
+// RUN: %clang_cc1 -triple x86_64-pc-linux-gnu -fsyntax-only -verify -std=c++11 %s
 
 static int test0 __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
 static void test1() __attribute__((weak)); // expected-error {{weak declaration cannot have internal linkage}}
@@ -31,8 +31,10 @@ template <class T> struct Test7 {
 };
 template <class T>
 int Test7<T>::var;
-namespace { class Internal; }
+namespace { class Internal {}; }
 template struct Test7<Internal>;
 template struct Test7<int>;
 
 class __attribute__((weak)) Test8 {}; // OK
+
+__attribute__((weak)) auto Test9 = Internal(); // expected-error {{weak declaration cannot have internal linkage}}