1--- a/kstyle/breezehelper.h	2020-09-01 10:21:05.000000000 +0000
2+++ b/kstyle/breezehelper.h	2021-02-18 14:00:51.609956729 +0000
3@@ -270,11 +270,11 @@
4         virtual qreal devicePixelRatio( const QPixmap& ) const;
5
6         //* frame radius
7-        constexpr qreal frameRadius( const int penWidth = PenWidth::NoPen, const qreal bias = 0 ) const
8+        const qreal frameRadius( const int penWidth = PenWidth::NoPen, const qreal bias = 0 ) const
9         { return qMax( Metrics::Frame_FrameRadius - (0.5 * penWidth) + bias, 0.0 ); }
10
11         //* frame radius with new pen width
12-        constexpr qreal frameRadiusForNewPenWidth( const qreal oldRadius, const int penWidth ) const
13+        const qreal frameRadiusForNewPenWidth( const qreal oldRadius, const int penWidth ) const
14         { return qMax( oldRadius - (0.5 * penWidth), 0.0 ); }
15
16         //* return a QRectF with the appropriate size for a rectangle with a pen stroke
17