objc-arc: mark functions which return types which can't be dealt with
in arc mode and are in system headers as unavailable.
// rdar://10186625
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@140565 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Sema/SemaDeclAttr.cpp b/lib/Sema/SemaDeclAttr.cpp
index 88c89f2..6e0dc8f 100644
--- a/lib/Sema/SemaDeclAttr.cpp
+++ b/lib/Sema/SemaDeclAttr.cpp
@@ -3758,7 +3758,9 @@
// Private ivars are always okay. Unfortunately, people don't
// always properly make their ivars private, even in system headers.
// Plus we need to make fields okay, too.
- if (!isa<FieldDecl>(decl) && !isa<ObjCPropertyDecl>(decl))
+ // Function declarations in sys headers will be marked unavailable.
+ if (!isa<FieldDecl>(decl) && !isa<ObjCPropertyDecl>(decl) &&
+ !isa<FunctionDecl>(decl))
return false;
// Require it to be declared in a system header.
diff --git a/test/SemaObjC/arc-unavailable-system-function.m b/test/SemaObjC/arc-unavailable-system-function.m
new file mode 100644
index 0000000..d4f1095
--- /dev/null
+++ b/test/SemaObjC/arc-unavailable-system-function.m
@@ -0,0 +1,13 @@
+// RUN: %clang_cc1 -fsyntax-only -triple x86_64-apple-darwin11 -fobjc-arc -fobjc-nonfragile-abi -verify %s
+// rdar://10186625
+
+# 1 "<command line>"
+# 1 "/System/Library/Frameworks/Foundation.framework/Headers/Foundation.h" 1 3
+id * foo(); // expected-note {{function has been explicitly marked unavailable here}}
+
+# 1 "arc-unavailable-system-function.m" 2
+void ret() {
+ foo(); // expected-error {{'foo' is unavailable: this system declaration uses an unsupported type}}
+}
+
+
