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Use initialized memory for composited bounds (flutter/engine#3291)

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SkRect objects need to be manually initialized. Previously, we were using
unintialized memory in our bounds calculations.
This commit is contained in:
Adam Barth 2016-12-02 14:18:11 -08:00 committed by GitHub
parent 23e5ad705f
commit 6312be1f15
1 changed files with 2 additions and 1 deletions
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engine/src/flutter/flow/layers/container_layer.cc
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@ -25,9 +25,10 @@ void ContainerLayer::Preroll(PrerollContext* context, const SkMatrix& matrix) {
void ContainerLayer::PrerollChildren(PrerollContext* context,
const SkMatrix& matrix) {
SkRect child_paint_bounds;
SkRect child_paint_bounds = SkRect::MakeEmpty();
for (auto& layer : layers_) {
PrerollContext child_context = *context;
FTL_DCHECK(child_context.child_paint_bounds.isEmpty());
layer->Preroll(&child_context, matrix);
if (layer->needs_system_composite())
set_needs_system_composite(true);