diff --git a/c-tests/new/issue394.c b/c-tests/new/issue394.c
new file mode 100644
index 0000000000..9d7e3a40a8
--- /dev/null
+++ b/c-tests/new/issue394.c
@@ -0,0 +1,2 @@
+static _Thread_local int x;
+int main (void) { return 0; }
diff --git a/c-tests/new/issue394.stderr-expect b/c-tests/new/issue394.stderr-expect
new file mode 100644
index 0000000000..9d4294aa84
--- /dev/null
+++ b/c-tests/new/issue394.stderr-expect
@@ -0,0 +1 @@
+issue394.c:1:8: warning -- Thread local is not implemented -- program might not work as assumed