Objective-C encoding. Fixes up encodeing for

arrays of empty structs. // rdar://14053082
(also pr13062).

llvm-svn: 183234

Author: Fariborz Jahanian

clang/lib/AST/ASTContext.cpp

@@ -5242,12 +5242,9 @@ void ASTContext::getObjCEncodingForTypeImpl(QualType T, std::string& S,
     } else {
       S += '[';
 
-      if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT)) {
-        if (getTypeSize(CAT->getElementType()) == 0)
-          S += '0';
-        else
-          S += llvm::utostr(CAT->getSize().getZExtValue());
-      } else {
+      if (const ConstantArrayType *CAT = dyn_cast<ConstantArrayType>(AT))
+        S += llvm::utostr(CAT->getSize().getZExtValue());
+      else {
         //Variable length arrays are encoded as a regular array with 0 elements.
         assert((isa<VariableArrayType>(AT) || isa<IncompleteArrayType>(AT)) &&
                "Unknown array type!");

clang/test/CodeGenObjC/encode-test.m

@@ -159,7 +159,7 @@ @implementation Derived1X @end
   int tt;
 };
 
-// CHECK: @g10 = constant [14 x i8] c"{f=i[0{?=}]i}\00"
+// CHECK: @g10 = constant [14 x i8] c"{f=i[4{?=}]i}\00"
 const char g10[] = @encode(struct f);
 
 // rdar://9622422