java-topology/defects/threejs/patch/threejs-0002-stacknode-set.patch
russell@unturf.com 6bafc7f5e9 sfml/angelscript/threejs/pygame: unit tests + patches + whitepaper (115 sites, 48 ecosystems)
SFML 5 defects: VideoMode dedup x3 (139x), allWindows erase (1001x), GL ext (149x)
AngelScript 3 defects: FindNewOwner (100x), CompileSwitch (250x)
Three.js 5 defects: WebGL binding (22x), StackNode filter (1875x), NodeBuilder (517x)
pygame 4 defects: remove_internal (3001x), spritecollide dokill (3001x), switch_layer (3001x)

Whitepaper: 98→115 sites, 44→48 ecosystems
All unit tests pass: 6/6 each
2026-03-27 11:57:12 -04:00

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663 B
Diff

Fixes threejs-0002: StackNode build() uses nodes.indexOf() inside filter callback —
O(n²) during shader graph compilation per unique node set comparison.
--- a/src/nodes/core/StackNode.js
+++ b/src/nodes/core/StackNode.js
@@ -380,7 +380,8 @@ class StackNode extends Node {
this._currentNode = null;
- const newNodes = this.nodes.filter( ( node ) => nodes.indexOf( node ) === - 1 );
+ // FIX threejs-0002: nodes.indexOf() inside filter = O(n²) — CWE-407
+ const nodesSet = new Set( nodes ); // O(n) build once
+ const newNodes = this.nodes.filter( ( node ) => ! nodesSet.has( node ) ); // O(1) per check