Debugger: Hardcode QChar type

QChar lookup doesn't always return the expected type. Get ahead of
this by hardcoding the type data on initialization.

Change-Id: Ie25c27521afeddc3da917242ce64df3901bcc80b
Reviewed-by: hjk <hjk@qt.io>

share/qtcreator/debugger/dumper.py

@@ -292,6 +292,7 @@ class DumperBase:
         self.currentPrintsAddress = True
         self.currentChildType = None
         self.currentChildNumChild = None
+        self.registerKnownTypes()
 
     def setVariableFetchingOptions(self, args):
         self.resultVarName = args.get('resultvarname', '')
@@ -494,6 +495,23 @@ class DumperBase:
         nativeType = self.lookupNativeType(typeName)
         return None if nativeType is None else self.fromNativeType(nativeType)
 
+    def registerKnownTypes(self):
+        typeId = 'QChar'
+        tdata = self.TypeData(self)
+        tdata.name = typeId
+        tdata.typeId = typeId
+        tdata.lbitsize = 16
+        tdata.code = TypeCodeStruct
+        field = self.Field(self)
+        field.name = 'ucs'
+        field.ltype = self.lookupType('unsigned short')
+        field.lbitsize = 16
+        field.lbitpos = 0
+        tdata.lfields = [field]
+        tdata.lalignment = 2
+        tdata.templateArguments = []
+        self.registerType(typeId, tdata)
+
     def nativeDynamicType(self, address, baseType):
         return baseType # Override in backends.