Debugger: Re-enable access to dumper.Value by integral index

Task-number: QTCREATORBUG-17220
Change-Id: I63632a90e2518151b3bf20b1241c24f9808ec39c
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

share/qtcreator/debugger/dumper.py

@@ -2862,6 +2862,9 @@ class DumperBase:
             elif isinstance(index, self.dumper.Field):
                 field = index
             elif self.dumper.isInt(index):
+                if self.type.code in (TypeCodeArray, TypeCodePointer):
+                    itemAddress = self.laddress + int(index) * self.type.ltarget.size()
+                    return self.dumper.createValue(itemAddress, self.type.ltarget)
                 return self.members(False)[index]
             else:
                 error('BAD INDEX TYPE %s' % type(index))

share/qtcreator/debugger/misctypes.py

@@ -315,3 +315,14 @@ def qdump__WTF__String(d, value):
         charSize = 2
 
     d.putCharArrayHelper(bufferPtr, stringLength, charSize)
+
+
+#######################################################################
+#
+# Internal test
+#
+#######################################################################
+
+def qdump__QtcDumperTest_FieldAccessByIndex(d, value):
+    d.putValue(value["d"][2].integer())
+

tests/auto/debugger/tst_dumpers.cpp

@@ -6239,6 +6239,11 @@ void tst_Dumpers::dumper_data()
             + Check("v15", "\"utf16\"", "@QJSValue (QString)")
             + Check("v15.1", "[1]", "116", "@QChar");
 
+    QTest::newRow("Internal1")
+            << Data("struct QtcDumperTest_FieldAccessByIndex { int d[3] = { 10, 11, 12 }; };\n",
+                    "QtcDumperTest_FieldAccessByIndex d; unused(&d);\n")
+            + Check("d", "12", "QtcDumperTest_FieldAccessByIndex");
+
 #if 0
 #ifdef Q_OS_LINUX
     // Hint: To open a failing test in Creator, do: