Availability: attach the note to the declaration with the attributes.

Sometimes, the declaration we found has inherited availability
attributes, attaching the note to it does not tell us where the
availability attributes are in the source.

Go through the redecl chain to find the declaration with actual
availability attributes.

rdar://25221771

llvm-svn: 268786

1 files changed, 11 insertions, 0 deletions

diff --git a/clang/test/Sema/attr-availability-macosx.c b/clang/test/Sema/attr-availability-macosx.c
index 21a79ff17a1..6991f14d950 100644
--- a/clang/test/Sema/attr-availability-macosx.c
+++ b/clang/test/Sema/attr-availability-macosx.c
@@ -45,3 +45,14 @@ enum {
 enum __attribute__((availability(macosx,introduced=8.0,deprecated=9.0))) {
     bar1 = foo
 };
+
+// Make sure the note is on the declaration with the actual availability attributes.
+struct __attribute__((availability(macosx,strict,introduced=10.9))) type_info // \
+    expected-note{{'type_info' has been explicitly marked unavailable here}}
+{
+};
+struct type_info;
+int test2() {
+  struct type_info *t; // expected-error{{'type_info' is unavailable: introduced in OS X 10.9}}
+  return 0;
+}