diff options
| -rw-r--r-- | services/surfaceflinger/Layer.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/services/surfaceflinger/Layer.cpp b/services/surfaceflinger/Layer.cpp index 3b9c7b77c7..e9965d4717 100644 --- a/services/surfaceflinger/Layer.cpp +++ b/services/surfaceflinger/Layer.cpp @@ -2410,7 +2410,15 @@ InputWindowInfo Layer::fillInputInfo() { xSurfaceInset = (xSurfaceInset >= 0) ? std::min(xSurfaceInset, layerBounds.getWidth() / 2) : 0; ySurfaceInset = (ySurfaceInset >= 0) ? std::min(ySurfaceInset, layerBounds.getHeight() / 2) : 0; - layerBounds.inset(xSurfaceInset, ySurfaceInset, xSurfaceInset, ySurfaceInset); + // inset while protecting from overflow TODO(b/161235021): What is going wrong + // in the overflow scenario? + { + int32_t tmp; + if (!__builtin_add_overflow(layerBounds.left, xSurfaceInset, &tmp)) layerBounds.left = tmp; + if (!__builtin_sub_overflow(layerBounds.right, xSurfaceInset, &tmp)) layerBounds.right = tmp; + if (!__builtin_add_overflow(layerBounds.top, ySurfaceInset, &tmp)) layerBounds.top = tmp; + if (!__builtin_sub_overflow(layerBounds.bottom, ySurfaceInset, &tmp)) layerBounds.bottom = tmp; + } // Input coordinate should match the layer bounds. info.frameLeft = layerBounds.left; |