48e00ab70a
CL 570555 replaced a loop which added empty color.RGBA elements with a call to clear. color.Palette is a slice of interfaces, so using clear results in a slice of nil elements, rather than what we previously had which was empty color.RGBA elements. This could cause a panic when attempting to re-encode a GIF which had an extended color palette because of the weird transparency hack. This was discovered by OSS-Fuzz. I've added a test case using their reproducer in order to prevent future regressions. Change-Id: I00a89257d90b6cca68672173eecdaa0a24f18d9c Reviewed-on: https://go-review.googlesource.com/c/go/+/577555 Reviewed-by: Nigel Tao <nigeltao@golang.org> LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com> Auto-Submit: Roland Shoemaker <roland@golang.org> Reviewed-by: Ian Lance Taylor <iant@google.com> Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com> |
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