From f07b952296e20e93759083018420683855c5fc6c Mon Sep 17 00:00:00 2001
From: Lee Thomason <lthomaso@adobe.com>
Date: Thu, 30 Oct 2014 13:25:12 -0700
Subject: [PATCH] fix issue 184. clean up xcode project.

---
 tinyxml2.cpp                                | 45 ++++++++++++---------
 tinyxml2.h                                  | 24 ++++++++---
 tinyxml2/tinyxml2.xcodeproj/project.pbxproj |  7 ++++
 xmltest.cpp                                 | 17 +++++++-
 4 files changed, 68 insertions(+), 25 deletions(-)

diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index 2893a27..9928444 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -1623,24 +1623,7 @@ XMLDocument::XMLDocument( bool processEntities, Whitespace whitespace ) :
 
 XMLDocument::~XMLDocument()
 {
-    DeleteChildren();
-    delete [] _charBuffer;
-
-#if 0
-    _textPool.Trace( "text" );
-    _elementPool.Trace( "element" );
-    _commentPool.Trace( "comment" );
-    _attributePool.Trace( "attribute" );
-#endif
-
-#ifdef DEBUG
-	if ( Error() == false ) {
-		TIXMLASSERT( _elementPool.CurrentAllocs()   == _elementPool.Untracked() );
-		TIXMLASSERT( _attributePool.CurrentAllocs() == _attributePool.Untracked() );
-		TIXMLASSERT( _textPool.CurrentAllocs()      == _textPool.Untracked() );
-		TIXMLASSERT( _commentPool.CurrentAllocs()   == _commentPool.Untracked() );
-	}
-#endif
+    Clear();
 }
 
 
@@ -1654,6 +1637,22 @@ void XMLDocument::Clear()
 
     delete [] _charBuffer;
     _charBuffer = 0;
+
+#if 0
+    _textPool.Trace( "text" );
+    _elementPool.Trace( "element" );
+    _commentPool.Trace( "comment" );
+    _attributePool.Trace( "attribute" );
+#endif
+    
+#ifdef DEBUG
+    if ( Error() == false ) {
+        TIXMLASSERT( _elementPool.CurrentAllocs()   == _elementPool.Untracked() );
+        TIXMLASSERT( _attributePool.CurrentAllocs() == _attributePool.Untracked() );
+        TIXMLASSERT( _textPool.CurrentAllocs()      == _textPool.Untracked() );
+        TIXMLASSERT( _commentPool.CurrentAllocs()   == _commentPool.Untracked() );
+    }
+#endif
 }
 
 
@@ -1821,6 +1820,16 @@ XMLError XMLDocument::Parse( const char* p, size_t len )
 
     ptrdiff_t delta = p - start;	// skip initial whitespace, BOM, etc.
     ParseDeep( _charBuffer+delta, 0 );
+    if (_errorID) {
+        // clean up now essentially dangling memory.
+        // and the parse fail can put objects in the
+        // pools that are dead and inaccessible.
+        DeleteChildren();
+        _elementPool.Clear();
+        _attributePool.Clear();
+        _textPool.Clear();
+        _commentPool.Clear();
+    }
     return _errorID;
 }
 
diff --git a/tinyxml2.h b/tinyxml2.h
index 4dfb015..5f8bfcd 100755
--- a/tinyxml2.h
+++ b/tinyxml2.h
@@ -122,9 +122,9 @@ inline int TIXML_SNPRINTF( char* buffer, size_t size, const char* format, ... )
 /* Versioning, past 1.0.14:
 	http://semver.org/
 */
-static const int TIXML2_MAJOR_VERSION = 2;
-static const int TIXML2_MINOR_VERSION = 2;
-static const int TIXML2_PATCH_VERSION = 0;
+static const int TIXML2_MAJOR_VERSION = 2;
+static const int TIXML2_MINOR_VERSION = 2;
+static const int TIXML2_PATCH_VERSION = 0;
 
 namespace tinyxml2
 {
@@ -261,7 +261,7 @@ public:
         return _mem[i];
     }
 
-    const T& PeekTop() const                            {
+    const T& PeekTop() const            {
         TIXMLASSERT( _size > 0 );
         return _mem[ _size - 1];
     }
@@ -317,6 +317,7 @@ public:
     virtual void* Alloc() = 0;
     virtual void Free( void* ) = 0;
     virtual void SetTracked() = 0;
+    virtual void Clear() = 0;
 };
 
 
@@ -329,10 +330,20 @@ class MemPoolT : public MemPool
 public:
     MemPoolT() : _root(0), _currentAllocs(0), _nAllocs(0), _maxAllocs(0), _nUntracked(0)	{}
     ~MemPoolT() {
+        Clear();
+    }
+    
+    void Clear() {
         // Delete the blocks.
-        for( int i=0; i<_blockPtrs.Size(); ++i ) {
-            delete _blockPtrs[i];
+        while( !_blockPtrs.Empty()) {
+            Block* b  = _blockPtrs.Pop();
+            delete b;
         }
+        _root = 0;
+        _currentAllocs = 0;
+        _nAllocs = 0;
+        _maxAllocs = 0;
+        _nUntracked = 0;
     }
 
     virtual int ItemSize() const	{
@@ -365,6 +376,7 @@ public:
         _nUntracked++;
         return result;
     }
+    
     virtual void Free( void* mem ) {
         if ( !mem ) {
             return;
diff --git a/tinyxml2/tinyxml2.xcodeproj/project.pbxproj b/tinyxml2/tinyxml2.xcodeproj/project.pbxproj
index cd31274..58c4fcc 100644
--- a/tinyxml2/tinyxml2.xcodeproj/project.pbxproj
+++ b/tinyxml2/tinyxml2.xcodeproj/project.pbxproj
@@ -96,6 +96,9 @@
 /* Begin PBXProject section */
 		037AE058151CCC5200E0F29F /* Project object */ = {
 			isa = PBXProject;
+			attributes = {
+				LastUpgradeCheck = 0610;
+			};
 			buildConfigurationList = 037AE05B151CCC5200E0F29F /* Build configuration list for PBXProject "tinyxml2" */;
 			compatibilityVersion = "Xcode 3.2";
 			developmentRegion = English;
@@ -134,6 +137,8 @@
 			buildSettings = {
 				CONFIGURATION_BUILD_DIR = "$(SYMROOT)/Debug";
 				COPY_PHASE_STRIP = NO;
+				"GCC_PREPROCESSOR_DEFINITIONS[arch=*]" = DEBUG;
+				ONLY_ACTIVE_ARCH = YES;
 				SYMROOT = build;
 			};
 			name = Debug;
@@ -156,6 +161,7 @@
 				GCC_MODEL_TUNING = G5;
 				GCC_OPTIMIZATION_LEVEL = 0;
 				INSTALL_PATH = /usr/local/bin;
+				MACOSX_DEPLOYMENT_TARGET = "";
 				PREBINDING = NO;
 				PRODUCT_NAME = xmltest;
 			};
@@ -171,6 +177,7 @@
 				GCC_ENABLE_FIX_AND_CONTINUE = NO;
 				GCC_MODEL_TUNING = G5;
 				INSTALL_PATH = /usr/local/bin;
+				MACOSX_DEPLOYMENT_TARGET = "";
 				PREBINDING = NO;
 				PRODUCT_NAME = tinyxml2;
 				ZERO_LINK = NO;
diff --git a/xmltest.cpp b/xmltest.cpp
index 56b6c82..c57bd79 100644
--- a/xmltest.cpp
+++ b/xmltest.cpp
@@ -1363,7 +1363,22 @@ int main( int argc, const char ** argv )
 		*/
 	}
 #endif
-
+    
+    {
+        // Issue #184
+        // If it doesn't assert, it passes. Caused by objects
+        // getting created during parsing which are then
+        // inaccessible in the memory pools.
+        {
+            XMLDocument doc;
+            doc.Parse("<?xml version=\"1.0\" encoding=\"UTF-8\"?><test>");
+        }
+        {
+            XMLDocument doc;
+            doc.Parse("<?xml version=\"1.0\" encoding=\"UTF-8\"?><test>");
+            doc.Clear();
+        }
+    }
 
 
 	// ----------- Performance tracking --------------