From b21ab43cfc3fa0dacf5c95f04e58b6d804b59a16 Mon Sep 17 00:00:00 2001
From: Alexey Samsonov <samsonov@google.com>
Date: Mon, 18 Nov 2013 09:31:53 +0000
Subject: Revert r194865 and r194874.

This change is incorrect. If you delete virtual destructor of both a base class
and a subclass, then the following code:
  Base *foo = new Child();
  delete foo;
will not cause the destructor for members of Child class. As a result, I observe
plently of memory leaks. Notable examples I investigated are:
ObjectBuffer and ObjectBufferStream, AttributeImpl and StringSAttributeImpl.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@194997 91177308-0d34-0410-b5e6-96231b3b80d8
---
 tools/llvm-stress/llvm-stress.cpp | 40 +--------------------------------------
 1 file changed, 1 insertion(+), 39 deletions(-)

(limited to 'tools')

diff --git a/tools/llvm-stress/llvm-stress.cpp b/tools/llvm-stress/llvm-stress.cpp
index d262a69..15f7abf 100644
--- a/tools/llvm-stress/llvm-stress.cpp
+++ b/tools/llvm-stress/llvm-stress.cpp
@@ -128,7 +128,7 @@ public:
     BB(Block),PT(PT),Ran(R),Context(BB->getContext()) {}
 
   /// virtual D'tor to silence warnings.
-  virtual ~Modifier();
+  virtual ~Modifier() {}
 
   /// Add a new instruction.
   virtual void Act() = 0;
@@ -285,11 +285,8 @@ protected:
   LLVMContext &Context;
 };
 
-Modifier::~Modifier() {}
-
 struct LoadModifier: public Modifier {
   LoadModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~LoadModifier();
   virtual void Act() {
     // Try to use predefined pointers. If non exist, use undef pointer value;
     Value *Ptr = getRandomPointerValue();
@@ -298,11 +295,8 @@ struct LoadModifier: public Modifier {
   }
 };
 
-LoadModifier::~LoadModifier() {}
-
 struct StoreModifier: public Modifier {
   StoreModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~StoreModifier();
   virtual void Act() {
     // Try to use predefined pointers. If non exist, use undef pointer value;
     Value *Ptr = getRandomPointerValue();
@@ -319,11 +313,8 @@ struct StoreModifier: public Modifier {
   }
 };
 
-StoreModifier::~StoreModifier() {}
-
 struct BinModifier: public Modifier {
   BinModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~BinModifier();
 
   virtual void Act() {
     Value *Val0 = getRandomVal();
@@ -365,13 +356,9 @@ struct BinModifier: public Modifier {
   }
 };
 
-BinModifier::~BinModifier() {}
-
 /// Generate constant values.
 struct ConstModifier: public Modifier {
   ConstModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~ConstModifier();
-
   virtual void Act() {
     Type *Ty = pickType();
 
@@ -416,11 +403,8 @@ struct ConstModifier: public Modifier {
   }
 };
 
-ConstModifier::~ConstModifier() {}
-
 struct AllocaModifier: public Modifier {
   AllocaModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R){}
-  virtual ~AllocaModifier();
 
   virtual void Act() {
     Type *Tp = pickType();
@@ -428,12 +412,9 @@ struct AllocaModifier: public Modifier {
   }
 };
 
-AllocaModifier::~AllocaModifier() {}
-
 struct ExtractElementModifier: public Modifier {
   ExtractElementModifier(BasicBlock *BB, PieceTable *PT, Random *R):
     Modifier(BB, PT, R) {}
-  virtual ~ExtractElementModifier();
 
   virtual void Act() {
     Value *Val0 = getRandomVectorValue();
@@ -445,12 +426,8 @@ struct ExtractElementModifier: public Modifier {
   }
 };
 
-ExtractElementModifier::~ExtractElementModifier() {}
-
 struct ShuffModifier: public Modifier {
   ShuffModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~ShuffModifier();
-
   virtual void Act() {
 
     Value *Val0 = getRandomVectorValue();
@@ -476,12 +453,9 @@ struct ShuffModifier: public Modifier {
   }
 };
 
-ShuffModifier::~ShuffModifier() {}
-
 struct InsertElementModifier: public Modifier {
   InsertElementModifier(BasicBlock *BB, PieceTable *PT, Random *R):
     Modifier(BB, PT, R) {}
-  virtual ~InsertElementModifier();
 
   virtual void Act() {
     Value *Val0 = getRandomVectorValue();
@@ -496,12 +470,8 @@ struct InsertElementModifier: public Modifier {
 
 };
 
-InsertElementModifier::~InsertElementModifier() {}
-
 struct CastModifier: public Modifier {
   CastModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~CastModifier();
-
   virtual void Act() {
 
     Value *V = getRandomVal();
@@ -585,12 +555,9 @@ struct CastModifier: public Modifier {
 
 };
 
-CastModifier::~CastModifier() {}
-
 struct SelectModifier: public Modifier {
   SelectModifier(BasicBlock *BB, PieceTable *PT, Random *R):
     Modifier(BB, PT, R) {}
-  virtual ~SelectModifier();
 
   virtual void Act() {
     // Try a bunch of different select configuration until a valid one is found.
@@ -612,12 +579,9 @@ struct SelectModifier: public Modifier {
   }
 };
 
-SelectModifier::~SelectModifier() {}
 
 struct CmpModifier: public Modifier {
   CmpModifier(BasicBlock *BB, PieceTable *PT, Random *R):Modifier(BB, PT, R) {}
-  virtual ~CmpModifier();
-
   virtual void Act() {
 
     Value *Val0 = getRandomVal();
@@ -643,8 +607,6 @@ struct CmpModifier: public Modifier {
   }
 };
 
-CmpModifier::~CmpModifier() {}
-
 void FillFunction(Function *F, Random &R) {
   // Create a legal entry block.
   BasicBlock *BB = BasicBlock::Create(F->getContext(), "BB", F);
-- 
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