[ObjC] Supress the 'implementing unavailable method' warning when
the method declaration is unavailable for an app extension platform
Rationale:
Classes are often shared between an app extension code and
non-app extension code. There's no way to remove the implementation
using preprocessor when building the app extension, so we should not warn here.
rdar://38150617
llvm-svn: 331421
diff --git a/clang/lib/AST/DeclBase.cpp b/clang/lib/AST/DeclBase.cpp
index baf83a3..8d7291e 100644
--- a/clang/lib/AST/DeclBase.cpp
+++ b/clang/lib/AST/DeclBase.cpp
@@ -590,9 +590,11 @@
}
AvailabilityResult Decl::getAvailability(std::string *Message,
- VersionTuple EnclosingVersion) const {
+ VersionTuple EnclosingVersion,
+ StringRef *RealizedPlatform) const {
if (auto *FTD = dyn_cast<FunctionTemplateDecl>(this))
- return FTD->getTemplatedDecl()->getAvailability(Message, EnclosingVersion);
+ return FTD->getTemplatedDecl()->getAvailability(Message, EnclosingVersion,
+ RealizedPlatform);
AvailabilityResult Result = AR_Available;
std::string ResultMessage;
@@ -619,8 +621,11 @@
AvailabilityResult AR = CheckAvailability(getASTContext(), Availability,
Message, EnclosingVersion);
- if (AR == AR_Unavailable)
+ if (AR == AR_Unavailable) {
+ if (RealizedPlatform)
+ *RealizedPlatform = Availability->getPlatform()->getName();
return AR_Unavailable;
+ }
if (AR > Result) {
Result = AR;