1 files changed, 26 insertions, 0 deletions
diff --git a/test/Sema/auto-type.c b/test/Sema/auto-type.c
new file mode 100644
index 000000000000..9fadb90c2cda
--- /dev/null
+++ b/test/Sema/auto-type.c
@@ -0,0 +1,26 @@
+// RUN: %clang_cc1 %s -fsyntax-only -verify -pedantic -std=c11
+
+__auto_type a = 5; // expected-warning {{'__auto_type' is a GNU extension}}
+__extension__ __auto_type a1 = 5;
+#pragma clang diagnostic ignored "-Wgnu-auto-type"
+__auto_type b = 5.0;
+__auto_type c = &b;
+__auto_type d = (struct {int a;}) {5};
+_Static_assert(__builtin_types_compatible_p(__typeof(a), int), "");
+__auto_type e = e; // expected-error {{variable 'e' declared with '__auto_type' type cannot appear in its own initializer}}
+
+struct s { __auto_type a; }; // expected-error {{'__auto_type' not allowed in struct member}}
+
+__auto_type f = 1, g = 1.0; // expected-error {{'__auto_type' deduced as 'int' in declaration of 'f' and deduced as 'double' in declaration of 'g'}}
+
+__auto_type h() {} // expected-error {{'__auto_type' not allowed in function return type}}
+
+int i() {
+  struct bitfield { int field:2; };
+  __auto_type j = (struct bitfield){1}.field; // expected-error {{cannot pass bit-field as __auto_type initializer in C}}
+
+}
+
+int k(l)
+__auto_type l; // expected-error {{'__auto_type' not allowed in K&R-style function parameter}}
+{}