diff options
| -rw-r--r-- | clang/lib/CodeGen/CodeGenModule.cpp | 2 | ||||
| -rw-r--r-- | clang/lib/Sema/SemaDeclObjC.cpp | 9 | ||||
| -rw-r--r-- | clang/test/CodeGenObjC/compatibility-alias.m | 8 |
3 files changed, 18 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/CodeGenModule.cpp b/clang/lib/CodeGen/CodeGenModule.cpp index eaa8b58b41d..ff8acde9951 100644 --- a/clang/lib/CodeGen/CodeGenModule.cpp +++ b/clang/lib/CodeGen/CodeGenModule.cpp @@ -1065,7 +1065,7 @@ void CodeGenModule::EmitTopLevelDecl(Decl *D) { break; } case Decl::ObjCCompatibleAlias: - ErrorUnsupported(D, "Objective-C compatible alias"); + // compatibility-alias is a directive and has no code gen. break; case Decl::LinkageSpec: { diff --git a/clang/lib/Sema/SemaDeclObjC.cpp b/clang/lib/Sema/SemaDeclObjC.cpp index c32a806b7d1..68e7744582c 100644 --- a/clang/lib/Sema/SemaDeclObjC.cpp +++ b/clang/lib/Sema/SemaDeclObjC.cpp @@ -159,6 +159,15 @@ Sema::DeclTy *Sema::ActOnCompatiblityAlias(SourceLocation AtLoc, } // Check for class declaration Decl *CDeclU = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope); + if (const TypedefDecl *TDecl = dyn_cast_or_null<TypedefDecl>(CDeclU)) { + QualType T = TDecl->getUnderlyingType(); + if (T->isObjCInterfaceType()) { + if (NamedDecl *IDecl = T->getAsObjCInterfaceType()->getDecl()) { + ClassName = IDecl->getIdentifier(); + CDeclU = LookupDecl(ClassName, Decl::IDNS_Ordinary, TUScope); + } + } + } ObjCInterfaceDecl *CDecl = dyn_cast_or_null<ObjCInterfaceDecl>(CDeclU); if (CDecl == 0) { Diag(ClassLocation, diag::warn_undef_interface) << ClassName; diff --git a/clang/test/CodeGenObjC/compatibility-alias.m b/clang/test/CodeGenObjC/compatibility-alias.m new file mode 100644 index 00000000000..0982a90b708 --- /dev/null +++ b/clang/test/CodeGenObjC/compatibility-alias.m @@ -0,0 +1,8 @@ +// RUN: clang -emit-llvm -o %t %s + +@interface Int1 @end + +typedef Int1 Int1Typedef; +@compatibility_alias Int1Alias Int1Typedef; + +@implementation Int1Alias @end |
