C++: added some notes regarding QTCREATORBUG-7968

Change-Id: Ia7a0e4b416ba6ef768d76595d8576262a828ae78
Reviewed-by: David Schulz <david.schulz@digia.com>

src/libs/3rdparty/cplusplus/Bind.cpp

@@ -1069,6 +1069,7 @@ void Bind::capture(CaptureAST *ast)
     if (! ast)
         return;
 
+    // See QTCREATORBUG-7968
 }
 
 bool Bind::visit(LambdaDeclaratorAST *ast)

src/libs/3rdparty/cplusplus/Parser.cpp

@@ -6296,6 +6296,8 @@ bool Parser::parseLambdaCapture(LambdaCaptureAST *&node)
 
 bool Parser::parseCapture(CaptureAST *&)
 {
+    // See QTCREATORBUG-7968
+
     DEBUG_THIS_RULE();
     if (LA() == T_IDENTIFIER) {
         consumeToken();

src/libs/cplusplus/FindUsages.cpp

@@ -869,6 +869,7 @@ void FindUsages::capture(CaptureAST *ast)
     if (! ast)
         return;
 
+    // See QTCREATORBUG-7968
 }
 
 bool FindUsages::visit(LambdaDeclaratorAST *ast)

tests/auto/cplusplus/findusages/tst_findusages.cpp

@@ -77,6 +77,7 @@ class tst_FindUsages: public QObject
 
 private Q_SLOTS:
     void inlineMethod();
+//    void lambdaArg();
 
     // Qt keywords
     void qproperty_1();
@@ -123,6 +124,40 @@ void tst_FindUsages::inlineMethod()
     QCOMPARE(findUsages.references().size(), 2);
 }
 
+#if 0 /* see QTCREATORBUG-7968 */
+void tst_FindUsages::lambdaArg()
+{
+    const QByteArray src = "\n"
+                           "void f() {\n"
+                           "  int test;\n"
+                           "  [test] { ++test; };\n"
+                           "}\n";
+    Document::Ptr doc = Document::create("lambdaArg");
+    doc->setUtf8Source(src);
+    doc->parse();
+    doc->check();
+
+    QVERIFY(doc->diagnosticMessages().isEmpty());
+    QCOMPARE(doc->globalSymbolCount(), 1U);
+
+    Snapshot snapshot;
+    snapshot.insert(doc);
+
+    Function *f = doc->globalSymbolAt(0)->asFunction();
+    QVERIFY(f);
+    QCOMPARE(f->memberCount(), 1U);
+    Block *b = f->memberAt(0)->asBlock();
+    QCOMPARE(b->memberCount(), 2U);
+    Declaration *d = b->memberAt(0)->asDeclaration();
+    QVERIFY(d);
+    QCOMPARE(d->name()->identifier()->chars(), "test");
+
+    FindUsages findUsages(src, doc, snapshot);
+    findUsages(d);
+    QCOMPARE(findUsages.usages().size(), 3);
+}
+#endif
+
 #if 0
 @interface Clazz {} +(void)method:(int)arg; @end
 @implementation Clazz +(void)method:(int)arg {