--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/clang/test/PCH/thread-local.cpp	Thu Feb 13 15:10:13 2020 +0900
@@ -0,0 +1,20 @@
+// RUN: %clang_cc1 -pedantic-errors -Wno-c11-extensions -std=c++11 -triple x86_64-linux-gnu -emit-pch %s -o %t
+// RUN: %clang_cc1 -pedantic-errors -Wno-c11-extensions -std=c++11 -triple x86_64-linux-gnu -include-pch %t -verify %s
+// REQUIRES: x86-registered-target
+#ifndef HEADER_INCLUDED
+
+#define HEADER_INCLUDED
+extern thread_local int a;
+extern _Thread_local int b;
+extern int c;
+
+#else
+
+_Thread_local int a; // expected-error {{thread-local declaration of 'a' with static initialization follows declaration with dynamic initialization}}
+// expected-note@7 {{previous declaration is here}}
+thread_local int b; // expected-error {{thread-local declaration of 'b' with dynamic initialization follows declaration with static initialization}}
+// expected-note@8 {{previous declaration is here}}
+thread_local int c; // expected-error {{thread-local declaration of 'c' follows non-thread-local declaration}}
+// expected-note@9 {{previous declaration is here}}
+
+#endif