gdb version string: ignore (...) content when using rubenvb's build

The often used rubenvb mingw-w64 build reports a GDB version string with
the GCC version in parentheses:
  GNU gdb (rubenvb-4.7.2-release) 7.5.50.20120920-cvs
With his patch the content within the parentheses is ignored, and is not
wrongly interpreted as GDB version.

Change-Id: I1a3c54acc81cb6d649d11ebf38dea96fc2685aa1
Reviewed-by: hjk <hjk121@nokiamail.com>

src/plugins/debugger/debuggerprotocol.cpp

@@ -392,12 +392,25 @@ void extractGdbVersion(const QString &msg,
 {
     const QChar dot(QLatin1Char('.'));
 
+    const bool ignoreParenthesisContent = msg.contains(QLatin1String("rubenvb"));
+    const QChar parOpen(QLatin1Char('('));
+    const QChar parClose(QLatin1Char(')'));
+
     QString cleaned;
     QString build;
     bool inClean = true;
+    bool inParenthesis = false;
     foreach (QChar c, msg) {
         if (inClean && !cleaned.isEmpty() && c != dot && (c.isPunct() || c.isSpace()))
             inClean = false;
+        if (ignoreParenthesisContent) {
+            if (!inParenthesis && c == parOpen)
+                inParenthesis = true;
+            if (inParenthesis && c == parClose)
+                inParenthesis = false;
+            if (inParenthesis)
+                continue;
+        }
         if (inClean) {
             if (c.isDigit())
                 cleaned.append(c);

tests/auto/debugger/tst_gdb.cpp

@@ -113,6 +113,10 @@ void tst_gdb::version_data()
     QTest::newRow("QNX")
         << "GNU gdb (GDB) 7.3 qnx (rev. 613)"
         << 70300 << 613 << false << true;
+
+    QTest::newRow("rubenvb")
+        << "GNU gdb (rubenvb-4.7.2-release) 7.5.50.20120920-cvs"
+        << 70550 << 20120920 << false << false;
 }
 
 static QString chopConst(QString type)