ImDrawList: Fixed AddConvexPolyFilled() undefined behavior when passing points_count smaller than 3, in particular, points_count==0 could lead to a memory stomp if the draw list was previously empty.
diff --git a/docs/CHANGELOG.txt b/docs/CHANGELOG.txt
index 0c42272..e43262c 100644
--- a/docs/CHANGELOG.txt
+++ b/docs/CHANGELOG.txt
@@ -47,6 +47,8 @@
- DragFloat: Disabled setting a default drag speed when one edge is FLT_MAX. (#2024)
- BeginMenu(): Fixed menu popup horizontal offset being off the item in the menu bar when WindowPadding=0.0f.
- ArrowButton(): Fixed arrow shape being horizontally misaligned by (FramePadding.y-FramePadding.x) if they are different.
+- ImDrawList: Fixed AddConvexPolyFilled() undefined behavior when passing points_count smaller than 3,
+ in particular, points_count==0 could lead to a memory stomp if the draw list was previously empty.
-----------------------------------------------------------------------
diff --git a/imgui_draw.cpp b/imgui_draw.cpp
index 12f094d..658aab0 100644
--- a/imgui_draw.cpp
+++ b/imgui_draw.cpp
@@ -822,6 +822,9 @@
void ImDrawList::AddConvexPolyFilled(const ImVec2* points, const int points_count, ImU32 col)
{
+ if (points_count < 3)
+ return;
+
const ImVec2 uv = _Data->TexUvWhitePixel;
if (Flags & ImDrawListFlags_AntiAliasedFill)
