Fix g++/MinGW compiler warnings.

- Assigned/Unused variables.
- Unsigned comparison >= 0 is always true.
- Constructor initialization order.
- Signed/Unsigned comparisons.

Change-Id: I1f9edab0506573420ed0bf3055252ba48625c8eb
Reviewed-by: Kai Koehne <kai.koehne@digia.com>

2 files changed, 1 insertions, 7 deletions

diff --git a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
index c32803c..07701c6 100644
--- a/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
+++ b/src/opengl/gl2paintengineex/qtriangulatingstroker.cpp
@@ -513,21 +513,18 @@ void QDashedStrokeProcessor::process(const QVectorPath &path, const QPen &pen, c
     m_dash_stroker.setMiterLimit(pen.miterLimit());
     m_dash_stroker.setClipRect(clip);
 
-    float curvynessAdd, curvynessMul, roundness = 0;
+    float curvynessAdd, curvynessMul;
 
     // simplfy pens that are thin in device size (2px wide or less)
     if (width < 2.5 && (cosmetic || m_inv_scale == 1)) {
         curvynessAdd = 0.5;
         curvynessMul = CURVE_FLATNESS / m_inv_scale;
-        roundness = 1;
     } else if (cosmetic) {
         curvynessAdd= width / 2;
         curvynessMul= CURVE_FLATNESS;
-        roundness = qMax<int>(4, width * CURVE_FLATNESS);
     } else {
         curvynessAdd = width * m_inv_scale;
         curvynessMul = CURVE_FLATNESS / m_inv_scale;
-        roundness = qMax<int>(4, width * curvynessMul);
     }
 
     if (count < 2)
diff --git a/src/opengl/qpaintengine_opengl.cpp b/src/opengl/qpaintengine_opengl.cpp
index 5948e3e..9368b3b 100644
--- a/src/opengl/qpaintengine_opengl.cpp
+++ b/src/opengl/qpaintengine_opengl.cpp
@@ -1561,8 +1561,6 @@ void QOpenGLPaintEnginePrivate::updateGradient(const QBrush &brush, const QRectF
     bool has_mirrored_repeat = QGLExtensions::glExtensions() & QGLExtensions::MirroredRepeat;
     Qt::BrushStyle style = brush.style();
 
-    QTransform m = brush.transform();
-
     if (has_mirrored_repeat && style == Qt::LinearGradientPattern) {
         const QLinearGradient *g = static_cast<const QLinearGradient *>(brush.gradient());
         QTransform m = brush.transform();
@@ -3781,7 +3779,6 @@ void QOpenGLPaintEngine::drawLines(const QLineF *lines, int lineCount)
             } else {
                 QVarLengthArray<GLfloat> vertexArray(4 * lineCount);
                 for (int i = 0; i < lineCount; ++i) {
-                    const QPointF a = lines[i].p1();
                     vertexArray[4*i]   = lines[i].x1();
                     vertexArray[4*i+1] = lines[i].y1();
                     vertexArray[4*i+2] = lines[i].x2();