From: David Chisnall <csdavec@swan.ac.uk>
Date: Mon, 21 Feb 2011 23:47:40 +0000 (+0000)
Subject: The instance size of a metaclass should be the size of a class.  This is not, in... 
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=05f3a507bb53ed2bd5573d551a26654a604187eb;p=clang

The instance size of a metaclass should be the size of a class.  This is not, in fact, 0, even for very small classes.  (GNU runtime)



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@126161 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/CodeGen/CGObjCGNU.cpp b/lib/CodeGen/CGObjCGNU.cpp
index d481e77926..8950f2131f 100644
--- a/lib/CodeGen/CGObjCGNU.cpp
+++ b/lib/CodeGen/CGObjCGNU.cpp
@@ -949,7 +949,12 @@ llvm::Constant *CGObjCGNU::GenerateClassStructure(
   Elements.push_back(MakeConstantString(Name, ".class_name"));
   Elements.push_back(Zero);
   Elements.push_back(llvm::ConstantInt::get(LongTy, info));
-  Elements.push_back(InstanceSize);
+  if (isMeta) {
+    llvm::TargetData td(&TheModule);
+    Elements.push_back(llvm::ConstantInt::get(LongTy,
+                     td.getTypeSizeInBits(ClassTy)/8));
+  } else
+    Elements.push_back(InstanceSize);
   Elements.push_back(IVars);
   Elements.push_back(Methods);
   Elements.push_back(NULLPtr);