Implement C++11 [dcl.align]p1 and C11 6.7.5/2 rules for alignas and _Alignas.

llvm-svn: 173779

1 files changed, 13 insertions, 5 deletions

diff --git a/clang/test/SemaCXX/attr-cxx0x.cpp b/clang/test/SemaCXX/attr-cxx0x.cpp
index 4281895f40e..26cece610c9 100644
--- a/clang/test/SemaCXX/attr-cxx0x.cpp
+++ b/clang/test/SemaCXX/attr-cxx0x.cpp
@@ -1,32 +1,40 @@
-// RUN: %clang_cc1 -fsyntax-only -verify -std=c++11 %s
+// RUN: %clang_cc1 -fsyntax-only -fcxx-exceptions -verify -std=c++11 %s
 
 int align_illegal alignas(3); //expected-error {{requested alignment is not a power of 2}}
 char align_big alignas(int);
 int align_small alignas(1); // FIXME: this should be rejected
 int align_multiple alignas(1) alignas(8) alignas(1);
+alignas(4) int align_before;
 
 struct align_member {
   int member alignas(8);
+  int bitfield alignas(1) : 1; // expected-error {{}}
 };
 
+void f(alignas(1) char c) { // expected-error {{'alignas' attribute cannot be applied to a function parameter}}
+  alignas(1) register char k; // expected-error {{'alignas' attribute cannot be applied to a variable with 'register' storage class}}
+  try {
+  } catch (alignas(4) int n) { // expected-error {{'alignas' attribute cannot be applied to a 'catch' variable}}
+  }
+}
+
+
 template <unsigned A> struct alignas(A) align_class_template {};
 
 // FIXME: these should not error
 template <typename... T> alignas(T...) struct align_class_temp_pack_type {}; // expected-error{{pack expansions in alignment specifiers are not supported yet}}
 template <unsigned... A> alignas(A...) struct align_class_temp_pack_expr {}; // expected-error{{pack expansions in alignment specifiers are not supported yet}}
 
-typedef char align_typedef alignas(8);
-template<typename T> using align_alias_template = align_typedef;
+typedef char align_typedef alignas(8); // expected-error {{'alignas' attribute only applies to variables, functions and tag types}}
+template<typename T> using align_alias_template = align_typedef alignas(8); // expected-error {{'alignas' attribute ignored when parsing type}};
 
 static_assert(alignof(align_big) == alignof(int), "k's alignment is wrong");
 static_assert(alignof(align_small) == 1, "j's alignment is wrong");
 static_assert(alignof(align_multiple) == 8, "l's alignment is wrong");
 static_assert(alignof(align_member) == 8, "quuux's alignment is wrong");
 static_assert(sizeof(align_member) == 8, "quuux's size is wrong");
-static_assert(alignof(align_typedef) == 8, "typedef's alignment is wrong");
 static_assert(alignof(align_class_template<8>) == 8, "template's alignment is wrong");
 static_assert(alignof(align_class_template<16>) == 16, "template's alignment is wrong");
 // FIXME: enable these tests
 // static_assert(alignof(align_class_temp_pack_type<short, int, long>) == alignof(long), "template's alignment is wrong");
 // static_assert(alignof(align_class_temp_pack_expr<8, 16, 32>) == 32, "template's alignment is wrong");
-static_assert(alignof(align_alias_template<int>) == 8, "alias template's alignment is wrong");