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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.

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This commit is contained in:
omar 2018-09-21 10:00:26 +02:00
parent 7c3b9172ad
commit 5719b23e01
2 changed files with 5 additions and 0 deletions
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2
docs/CHANGELOG.txt
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@ -47,6 +47,8 @@ Other Changes:
- 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.
-----------------------------------------------------------------------

3
imgui_draw.cpp
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@ -822,6 +822,9 @@ void ImDrawList::AddPolyline(const ImVec2* points, const int points_count, ImU32
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)