1 files changed, 55 insertions, 0 deletions
diff --git a/test/SemaCXX/cxx11-gnu-attrs.cpp b/test/SemaCXX/cxx11-gnu-attrs.cpp
new file mode 100644
index 000000000000..def83a94ea2b
--- /dev/null
+++ b/test/SemaCXX/cxx11-gnu-attrs.cpp
@@ -0,0 +1,55 @@
+// RUN: %clang -cc1 -triple x86_64-unknown-unknown -std=c++11 -verify %s
+
+// Error cases.
+
+[[gnu::this_attribute_does_not_exist]] int unknown_attr;
+// expected-warning@-1 {{unknown attribute 'this_attribute_does_not_exist' ignored}}
+int [[gnu::unused]] attr_on_type;
+// expected-error@-1 {{'unused' attribute cannot be applied to types}}
+int *[[gnu::unused]] attr_on_ptr;
+// expected-warning@-1 {{attribute 'unused' ignored, because it cannot be applied to a type}}
+
+// Valid cases.
+
+void alias1() {}
+void alias2 [[gnu::alias("_Z6alias1v")]] ();
+
+[[gnu::aligned(8)]] int aligned;
+void aligned_fn [[gnu::aligned(32)]] ();
+struct [[gnu::aligned(8)]] aligned_struct {};
+
+[[gnu::malloc, gnu::alloc_size(1,2)]] void *alloc_size(int a, int b);
+
+void always_inline [[gnu::always_inline]] ();
+
+__thread int tls_model [[gnu::tls_model("local-exec")]];
+
+void cleanup(int *p) {
+  int n [[gnu::cleanup(cleanup)]];
+}
+
+void deprecated1 [[gnu::deprecated]] (); // expected-note {{here}}
+[[gnu::deprecated("custom message")]] void deprecated2(); // expected-note {{here}}
+void deprecated3() {
+  deprecated1(); // expected-warning {{deprecated}}
+  deprecated2(); // expected-warning {{custom message}}
+}
+
+[[gnu::naked(1,2,3)]] void naked(); // expected-error {{takes no arguments}}
+
+void nonnull [[gnu::nonnull]] (); // expected-warning {{applied to function with no pointer arguments}}
+
+// [[gnu::noreturn]] appertains to a declaration, and marks the innermost
+// function declarator in that declaration as being noreturn.
+int noreturn [[gnu::noreturn]]; // expected-warning {{'noreturn' only applies to function types}}
+int noreturn_fn_1();
+int noreturn_fn_2() [[gnu::noreturn]]; // expected-warning {{cannot be applied to a type}}
+int noreturn_fn_3 [[gnu::noreturn]] ();
+[[gnu::noreturn]] int noreturn_fn_4();
+int (*noreturn_fn_ptr_1 [[gnu::noreturn]])() = &noreturn_fn_1; // expected-error {{cannot initialize}}
+int (*noreturn_fn_ptr_2 [[gnu::noreturn]])() = &noreturn_fn_3;
+[[gnu::noreturn]] int (*noreturn_fn_ptr_3)() = &noreturn_fn_1; // expected-error {{cannot initialize}}
+[[gnu::noreturn]] int (*noreturn_fn_ptr_4)() = &noreturn_fn_3;
+
+struct [[gnu::packed]] packed { char c; int n; };
+static_assert(sizeof(packed) == sizeof(char) + sizeof(int), "not packed");