1 files changed, 38 insertions, 3 deletions

diff --git a/src/declarative/qml/qdeclarativecompiledbindings.cpp b/src/declarative/qml/qdeclarativecompiledbindings.cpp
index 3721fb0..a6fcce4 100644
--- a/src/declarative/qml/qdeclarativecompiledbindings.cpp
+++ b/src/declarative/qml/qdeclarativecompiledbindings.cpp
@@ -40,6 +40,7 @@
 ****************************************************************************/
 
 // #define COMPILEDBINDINGS_DEBUG
+// #define REGISTER_CLEANUP_DEBUG
 
 #include "private/qdeclarativecompiledbindings_p.h"
 
@@ -171,6 +172,24 @@ struct Register {
 
     int type;          // Optional type
     void *data[2];     // Object stored here
+
+#ifdef REGISTER_CLEANUP_DEBUG
+    Register() {
+        type = 0;
+    }
+
+    ~Register() {
+        int allowedTypes[] = { QMetaType::QObjectStar, QMetaType::QReal, QMetaType::Int, QMetaType::Bool, 0 };
+        bool found = (type == 0);
+        int *ctype = allowedTypes;
+        while (!found && *ctype) {
+            found = (*ctype == type);
+            ++ctype;
+        }
+        if (!found)
+            qWarning("Register leaked of type %d", type);
+    }
+#endif
 };
 }
 
@@ -1412,10 +1431,16 @@ void QDeclarativeCompiledBindingsPrivate::run(int instrIndex,
 
     QML_BEGIN_INSTR(CleanupString)
         registers[instr->cleanup.reg].getstringptr()->~QString();
+#ifdef REGISTER_CLEANUP_DEBUG
+        registers[instr->cleanup.reg].setUndefined();
+#endif
     QML_END_INSTR(CleanupString)
 
     QML_BEGIN_INSTR(CleanupUrl)
         registers[instr->cleanup.reg].geturlptr()->~QUrl();
+#ifdef REGISTER_CLEANUP_DEBUG
+        registers[instr->cleanup.reg].setUndefined();
+#endif
     QML_END_INSTR(CleanupUrl)
 
     QML_BEGIN_INSTR(Fetch)
@@ -1533,10 +1558,19 @@ void QDeclarativeCompiledBindingsPrivate::run(int instrIndex,
         int type = registers[instr->cleanup.reg].gettype();
         if (type == qMetaTypeId<QVariant>()) {
             registers[instr->cleanup.reg].getvariantptr()->~QVariant();
+#ifdef REGISTER_CLEANUP_DEBUG
+        registers[instr->cleanup.reg].setUndefined();
+#endif
         } else if (type == QMetaType::QString) {
             registers[instr->cleanup.reg].getstringptr()->~QString();
+#ifdef REGISTER_CLEANUP_DEBUG
+        registers[instr->cleanup.reg].setUndefined();
+#endif
         } else if (type == QMetaType::QUrl) {
             registers[instr->cleanup.reg].geturlptr()->~QUrl();
+#ifdef REGISTER_CLEANUP_DEBUG
+        registers[instr->cleanup.reg].setUndefined();
+#endif
         }
     }
     QML_END_INSTR(CleanupGeneric)
@@ -1749,7 +1783,6 @@ bool QDeclarativeBindingCompilerPrivate::compile(QDeclarativeJS::AST::Node *node
         done.common.type = Instr::Done;
         bytecode << done;
 
-        return true;
     } else {
         // Can we store the final value?
         if (type.type == QVariant::Int &&
@@ -1791,12 +1824,12 @@ bool QDeclarativeBindingCompilerPrivate::compile(QDeclarativeJS::AST::Node *node
             Instr done;
             done.common.type = Instr::Done;
             bytecode << done;
-
-            return true;
         } else {
             return false;
         }
     }
+
+    return true;
 }
 
 bool QDeclarativeBindingCompilerPrivate::parseExpression(QDeclarativeJS::AST::Node *node, Result &type)
@@ -2236,6 +2269,8 @@ bool QDeclarativeBindingCompilerPrivate::stringArith(Result &type, const Result
 
     if (lhsTmp != -1) releaseReg(lhsTmp);
     if (rhsTmp != -1) releaseReg(rhsTmp);
+    releaseReg(lhs.reg);
+    releaseReg(rhs.reg);
 
     return true;
 }