Debugger: Pass uninitialized variables to the python dumpers

Reduces accessing uninitialized memory

Change-Id: I025e9070b9b17a806237619b484cb27230e7f494
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

share/qtcreator/debugger/cdbbridge.py

@@ -125,7 +125,6 @@ class Dumper(DumperBase):
                     pass
         val.isBaseClass = val.name == val.type.name
         val.nativeValue = nativeValue
-        val.lIsInScope = True
         val.laddress = nativeValue.address()
         return val
 
@@ -440,7 +439,9 @@ class Dumper(DumperBase):
 
         variables = []
         for val in cdbext.listOfLocals(self.partialVariable):
-            variables.append(self.fromNativeValue(val))
+            dumperVal = self.fromNativeValue(val)
+            dumperVal.lIsInScope = not dumperVal.name in self.uninitialized
+            variables.append(dumperVal)
 
         self.handleLocals(variables)
         self.handleWatches(args)

share/qtcreator/debugger/dumper.py

@@ -317,6 +317,8 @@ class DumperBase:
         self.nativeMixed = int(args.get('nativemixed', '0'))
         self.autoDerefPointers = int(args.get('autoderef', '0'))
         self.partialVariable = args.get('partialvar', '')
+        self.uninitialized = args.get('uninitialized', [])
+        self.uninitialized = list(map(lambda x: self.hexdecode(x), self.uninitialized))
         self.partialUpdate = int(args.get('partial', '0'))
         self.fallbackQtVersion = 0x50200
         #warn('NAMESPACE: "%s"' % self.qtNamespace())

src/plugins/debugger/cdb/cdbengine.cpp

@@ -1238,6 +1238,13 @@ void CdbEngine::doUpdateLocals(const UpdateParameters &updateParameters)
         cmd.arg("stringcutoff", action(MaximalStringLength)->value().toString());
         cmd.arg("displaystringlimit", action(DisplayStringLimit)->value().toString());
 
+        if (boolSetting(UseCodeModel)) {
+            QStringList uninitializedVariables;
+            getUninitializedVariables(Internal::cppCodeModelSnapshot(),
+                                      frame.function, frame.file, frame.line, &uninitializedVariables);
+            cmd.arg("uninitialized", uninitializedVariables);
+        }
+
         cmd.callback = [this](const DebuggerResponse &response) {
             if (response.resultClass == ResultDone) {
                 showMessage(response.data.toString(), LogMisc);