Improve fix for bug #70976

diff --git a/ext/gd/libgd/gd_interpolation.c b/ext/gd/libgd/gd_interpolation.c
index 0f874ac4cbde9c1581bd81569a799c3c1b794273..a946e04b4df49fe9ae4f66099d573169d09993f5 100644 (file)
--- a/ext/gd/libgd/gd_interpolation.c
+++ b/ext/gd/libgd/gd_interpolation.c
@@ -2162,7 +2162,7 @@ gdImagePtr gdImageRotateInterpolated(const gdImagePtr src, const float angle, in
 {
        const int angle_rounded = (int)floor(angle * 100);
 
-       if (bgcolor < 0 || bgcolor >= gdMaxColors) {
+       if (bgcolor < 0 || (!src->trueColor && bgcolor >= gdMaxColors)) {
                return NULL;
        }