Not all environs support stack arrays
diff --git a/src/shapes/paint/linear_gradient.cpp b/src/shapes/paint/linear_gradient.cpp
index 24d0c6a..92fb7a6 100644
--- a/src/shapes/paint/linear_gradient.cpp
+++ b/src/shapes/paint/linear_gradient.cpp
@@ -80,9 +80,13 @@
// build up the color and positions lists
const double ro = opacity() * renderOpacity();
const auto count = m_Stops.size();
- // TODO: replace these with stack-alloc helpers?
- ColorInt colors[count];
- float stops[count];
+
+ // need some temporary storage. Allocate enough for both arrays
+ assert(sizeof(ColorInt) == sizeof(float));
+ std::vector<ColorInt> storage(count * 2);
+ ColorInt* colors = storage.data();
+ float* stops = (float*)colors + count;
+
for (size_t i = 0; i < count; ++i) {
colors[i] = colorModulateOpacity(m_Stops[i]->colorValue(), ro);
stops[i] = m_Stops[i]->position();
