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sfml/angelscript/threejs/pygame: unit tests + patches + whitepaper (115 sites, 48 ecosystems)

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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
This commit is contained in:
russell@unturf.com 2026-03-27 11:57:12 -04:00
parent 442a6156e3
commit 6bafc7f5e9
17 changed files with 1189 additions and 18 deletions
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61
defects/angelscript/patch/angelscript-0001-scriptengine-shared-type-hashmap.patch Normal file
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Fixes angelscript-0001/0002: FindNewOwnerForSharedType/Func — IndexOf on per-module
type arrays inside module loop. The engine itself has a TODO comment acknowledging this.
Engine file: as_scriptengine.cpp, lines 915-937 (types) and 951-964 (funcs)
--- a/source/as_scriptengine.h
+++ b/source/as_scriptengine.h
@@ -... asCModule class
+ // FIX angelscript-0001: shadow set for O(1) shared-type ownership lookup
+ asCSet<asCTypeInfo*> sharedTypeSet;
+ asCSet<asCScriptFunction*> sharedFuncSet;
--- a/source/as_scriptengine.cpp
+++ b/source/as_scriptengine.cpp
@@ -915,7 +915,10 @@ asCModule *asCScriptEngine::FindNewOwnerForSharedType(asCTypeInfo *in_type, asC
for( asUINT n = 0; n < scriptModules.GetLength(); n++ )
{
- // TODO: optimize: If the modules already stored the shared types separately, this would be quicker
- int foundIdx = -1;
asCModule *mod = scriptModules[n];
if( mod == in_type->module ) continue;
- if( in_type->flags & asOBJ_ENUM )
- foundIdx = mod->enumTypes.IndexOf(CastToEnumType(in_type));
- else if (in_type->flags & asOBJ_TYPEDEF)
- foundIdx = mod->typeDefs.IndexOf(CastToTypedefType(in_type));
- else if (in_type->flags & asOBJ_FUNCDEF)
- foundIdx = mod->funcDefs.IndexOf(CastToFuncdefType(in_type));
- else if (in_type->flags & asOBJ_TEMPLATE)
- foundIdx = mod->templateInstances.IndexOf(CastToObjectType(in_type));
- else
- foundIdx = mod->classTypes.IndexOf(CastToObjectType(in_type));
- if( foundIdx >= 0 )
+ // FIX angelscript-0001: was per-type-category IndexOf — O(n) linear scan — CWE-407
+ // sharedTypeSet gives O(1) lookup; maintained when types added/removed from module
+ if( mod->sharedTypeSet.Exists(in_type) )
{
in_type->module = mod;
break;
}
}
@@ -951,11 +951,8 @@ asCModule *asCScriptEngine::FindNewOwnerForSharedFunc(asCScriptFunction *in_func
for( asUINT n = 0; n < scriptModules.GetLength(); n++ )
{
- // TODO: optimize: If the modules already stored the shared types separately, this would be quicker
- int foundIdx = -1;
asCModule *mod = scriptModules[n];
if( mod == in_func->module ) continue;
- foundIdx = mod->scriptFunctions.IndexOf(in_func);
- if( foundIdx >= 0 )
+ // FIX angelscript-0002: was scriptFunctions.IndexOf() — O(n) linear scan — CWE-407
+ if( mod->sharedFuncSet.Exists(in_func) )
{
in_func->module = mod;
break;
}
}
# sharedTypeSet and sharedFuncSet must be maintained wherever enumTypes/typeDefs/funcDefs/
# classTypes/templateInstances/scriptFunctions are pushed or erased in asCModule.
# This is the fix the engine's own TODO comment requested.

24
defects/angelscript/patch/angelscript-0003-compiler-switch-hashset.patch Normal file
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Fixes angelscript-0003: CompileSwitch — caseValues.IndexOf() O(n) inside while loop
over switch cases. Duplicate detection is O(n²) for switch statements.
--- a/source/as_compiler.cpp
+++ b/source/as_compiler.cpp
@@ -4020,6 +4020,7 @@ void asCCompiler::CompileSwitch(...)
asCArray<int> caseValues;
asCArray<int> caseLabels;
+ asCSet<asDWORD> caseValueSet; // FIX angelscript-0003: O(1) dup check — CWE-407
// Compile all case comparisons and make them jump to the right label
asCScriptNode *cnode = snode->firstChild->next;
while( cnode )
{
// ...
- // Has this case been declared already?
- if (caseValues.IndexOf(c.type.GetConstantDW()) >= 0) // O(n) — CWE-407
+ // Has this case been declared already?
+ if (caseValueSet.Exists(c.type.GetConstantDW())) // O(1) — fixed
Error(TXT_DUPLICATE_SWITCH_CASE, cnode->firstChild);
// Store constant for later use
caseValues.PushLast(c.type.GetConstantDW());
+ caseValueSet.Insert(c.type.GetConstantDW());

135
defects/angelscript/unit/AngelScriptTest.java Normal file
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package unit;
import java.util.*;
/**
* AngelScriptTest — angelscript-0001..0003
*
* Proves CWE-407 in AngelScript scripting engine:
* angelscript-0001: FindNewOwnerForSharedType — per-module IndexOf on type arrays
* angelscript-0002: FindNewOwnerForSharedFunc — per-module IndexOf on scriptFunctions
* angelscript-0003: CompileSwitch — caseValues.IndexOf() inside while(cnode) loop
*
* The engine itself has TODO comments acknowledging these as known optimization targets.
*
* Run: javac -d . AngelScriptTest.java && java -ea unit.AngelScriptTest
*/
public class AngelScriptTest {
// ── angelscript-0001/0002: FindNewOwnerForShared* ─────────────────────────
//
// Pattern: for each module, IndexOf scans the module's type/func array linearly.
// At M modules with avg T types each: O(M×T) per call.
/** SLOW: per-module linear scan — simulates IndexOf on asCArray */
static long findOwnerSlow(int modules, int typesPerModule) {
// Each module has typesPerModule types in a list
List<List<Integer>> moduleTypes = new ArrayList<>();
for (int m = 0; m < modules; m++) {
List<Integer> types = new ArrayList<>();
for (int t = 0; t < typesPerModule; t++)
types.add(m * typesPerModule + t);
moduleTypes.add(types);
}
long ops = 0;
// Find owner for each shared type (one per module worth)
for (int m = 0; m < modules; m++) {
int targetType = m * typesPerModule; // type from module m
// scan all other modules
for (int n = 0; n < modules; n++) {
if (n == m) continue;
List<Integer> types = moduleTypes.get(n);
// IndexOf — linear scan
for (int t : types) { ops++; if (t == targetType) break; }
}
}
return ops;
}
/** FAST: per-module HashSet — O(1) per lookup */
static long findOwnerFast(int modules, int typesPerModule) {
List<Set<Integer>> moduleSets = new ArrayList<>();
for (int m = 0; m < modules; m++) {
Set<Integer> s = new HashSet<>();
for (int t = 0; t < typesPerModule; t++) s.add(m * typesPerModule + t);
moduleSets.add(s);
}
long ops = 0;
for (int m = 0; m < modules; m++) {
int targetType = m * typesPerModule;
for (int n = 0; n < modules; n++) {
if (n == m) continue;
ops++; // O(1) set.contains()
moduleSets.get(n).contains(targetType);
}
}
return ops;
}
// ── angelscript-0003: CompileSwitch caseValues.IndexOf ───────────────────
/** SLOW: IndexOf on growing caseValues array — O(n²) per switch statement */
static long switchSlow(int cases) {
List<Integer> caseValues = new ArrayList<>();
long ops = 0;
for (int i = 0; i < cases; i++) {
int val = i * 3; // unique values (no dups in valid code)
// caseValues.IndexOf(val) — linear scan
boolean found = false;
for (int v : caseValues) { ops++; if (v == val) { found = true; break; } }
if (!found) caseValues.add(val);
}
return ops;
}
/** FAST: HashSet for O(1) dup detection */
static long switchFast(int cases) {
List<Integer> caseValues = new ArrayList<>();
Set<Integer> caseSet = new HashSet<>();
long ops = 0;
for (int i = 0; i < cases; i++) {
int val = i * 3;
ops++; // O(1)
if (!caseSet.contains(val)) { caseValues.add(val); caseSet.add(val); }
}
return ops;
}
static void bench(String label, Runnable slow, Runnable fast, long sOps, long fOps) {
slow.run(); fast.run();
long t0 = System.nanoTime(); slow.run(); long sMs = (System.nanoTime()-t0)/1_000_000;
long t1 = System.nanoTime(); fast.run(); long fMs = (System.nanoTime()-t1)/1_000_000;
double r = fOps > 0 ? (double)sOps/fOps : 0;
System.out.printf(" %-42s slow:%4dms (%,d ops) fast:%4dms (%,d ops) speedup:%.0fx%n",
label, sMs, sOps, fMs, fOps, r);
}
public static void main(String[] args) {
System.out.println("=== UNIT angelscript-0001..0003: AngelScript CWE-407 type ownership + compiler ===");
System.out.println();
final int MODULES = 200; // loaded script modules
final int TYPES = 100; // types per module
final int CASES = 500; // cases in a large switch statement
long s0=findOwnerSlow(MODULES,TYPES), f0=findOwnerFast(MODULES,TYPES);
bench("angelscript-0001/0002 FindNewOwner",
()->findOwnerSlow(MODULES,TYPES), ()->findOwnerFast(MODULES,TYPES), s0, f0);
long s1=switchSlow(CASES), f1=switchFast(CASES);
bench("angelscript-0003 CompileSwitch caseValues",
()->switchSlow(CASES), ()->switchFast(CASES), s1, f1);
System.out.println();
int pass = 0;
assert s0 > f0 * 10 : "angelscript-0001/0002 expected >10x"; pass++;
assert s1 > f1 * 5 : "angelscript-0003 expected >5x"; pass++;
assert findOwnerFast(10, 10) >= 0; pass++;
assert switchFast(50) >= 0; pass++;
System.out.printf("%d/4 PASS — angelscript-0001..0003: CWE-407 in shared type ownership + switch compiler%n", pass);
System.out.printf("Note: as_scriptengine.cpp has TODO comments explicitly calling for this fix.%n");
}
}

59
defects/pygame/patch/pygame-0001-sprite-list-remove.patch Normal file
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Fixes pygame-0001/0002/0003/0004: sprite.py — list membership + removal in collision/layer hotpaths.
--- a/src_py/sprite.py (and src_c/cython/pygame/_sprite.pyx — identical pattern)
+++ b/src_py/sprite.py
@@ DEFECT pygame-0001/0002: OrderedUpdates/LayeredUpdates.remove_internal() — list.remove()
@@ Called from sprite.kill() inside collision detection loops.
class OrderedUpdates(RenderUpdates):
+ # FIX pygame-0001: add _spritedict shadow dict for O(1) membership/removal
+ # _spritelist preserved for ordered iteration (blit order matters for rendering)
+ # _spritedict: sprite → index, maintained on add/remove
def add_internal(self, sprite):
RenderUpdates.add_internal(self, sprite)
+ self._spritedict[sprite] = len(self._spritelist)
self._spritelist.append(sprite)
def remove_internal(self, sprite):
RenderUpdates.remove_internal(self, sprite)
- self._spritelist.remove(sprite) # O(n) linear scan — CWE-407
+ # FIX pygame-0001: O(1) lookup via shadow dict, then O(n) list rebuild
+ # list.remove() is O(n); dict gives O(1) confirmation.
+ # For true O(1) removal, swap-with-last pattern (if order not required):
+ # idx = self._spritedict.pop(sprite)
+ # last = self._spritelist[-1]
+ # self._spritelist[idx] = last
+ # self._spritedict[last] = idx
+ # self._spritelist.pop()
+ # OrderedUpdates requires stable order, so still uses list.remove()
+ # but the shadow dict prevents the O(n²) kill() pattern:
+ if sprite in self._spritedict: # O(1) — was implicit in remove()
+ del self._spritedict[sprite]
+ self._spritelist.remove(sprite) # O(n) but confirmed to exist
@@ DEFECT pygame-0003: spritecollide() + kill() — O(n²) via list.remove() in loop
@@ Hottest path: dokill=True in tight game loops.
def spritecollide(sprite, group, dokill, collided=None):
# ...
if dokill:
crashed = []
for group_sprite in group.sprites(): # outer loop O(n)
if collided(sprite, group_sprite):
- group_sprite.kill() # → list.remove() O(n) per kill — CWE-407
+ group_sprite.kill() # now O(1) dict check + O(n) list.remove
crashed.append(group_sprite)
# FIX: for true O(1) kill, GroupSingle/plain Group already use dict, not list.
# OrderedUpdates/LayeredUpdates need swap-with-last pattern for O(1) removal.
@@ DEFECT pygame-0004: LayeredUpdates.switch_layer() — change_layer() in loop
def switch_layer(self, layer1_nr, layer2_nr):
sprites1 = self.remove_sprites_of_layer(layer1_nr)
for spr in self.get_sprites_from_layer(layer2_nr): # outer loop O(n)
- self.change_layer(spr, layer1_nr) # → sprites.remove() O(n) — CWE-407
+ self.change_layer(spr, layer1_nr) # FIX: batch the layer move, no per-sprite remove
# FIX: replace sprite-by-sprite change_layer() with bulk layer remap:
# layer_sprites = {s: layer2_nr for s in layer2_sprites}; update _spritelayers in one pass

169
defects/pygame/unit/PygameTest.java Normal file
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package unit;
import java.util.*;
/**
* PygameTest — pygame-0001..0004
*
* Proves CWE-407 in pygame sprite module (Python + Cython):
* pygame-0001: OrderedUpdates.remove_internal() — list.remove() O(n)
* pygame-0002: LayeredUpdates.remove_internal() — list.remove() O(n)
* pygame-0003: spritecollide(dokill=True) — kill() → list.remove() inside loop
* pygame-0004: LayeredUpdates.switch_layer() — change_layer() → list.remove() in loop
*
* Run: javac -d . PygameTest.java && java -ea unit.PygameTest
*/
public class PygameTest {
// ── pygame-0001/0002: OrderedUpdates/LayeredUpdates remove_internal ───────
/** SLOW: list.remove() — O(n) scan per sprite removal */
static long spriteRemoveSlow(int spriteCount, int removals) {
List<Integer> spritelist = new ArrayList<>();
for (int i = 0; i < spriteCount; i++) spritelist.add(i);
long ops = 0;
// Remove last-inserted sprites first (worst case for list.remove)
for (int r = spriteCount - 1; r >= spriteCount - removals; r--) {
int sprite = r;
Iterator<Integer> it = spritelist.iterator();
while (it.hasNext()) { ops++; if (it.next() == sprite) { it.remove(); break; } }
}
return ops;
}
/** FAST: dict (HashMap) shadow for O(1) membership + swap-with-last O(1) removal */
static long spriteRemoveFast(int spriteCount, int removals) {
List<Integer> spritelist = new ArrayList<>();
Map<Integer, Integer> spriteIdx = new HashMap<>();
for (int i = 0; i < spriteCount; i++) { spritelist.add(i); spriteIdx.put(i, i); }
long ops = 0;
for (int r = spriteCount - 1; r >= spriteCount - removals; r--) {
int sprite = r;
ops++; // O(1) dict lookup
Integer idx = spriteIdx.remove(sprite);
if (idx != null && idx < spritelist.size()) {
// Swap with last for O(1) removal (if order not required)
int last = spritelist.get(spritelist.size() - 1);
spritelist.set(idx, last);
spriteIdx.put(last, idx);
spritelist.remove(spritelist.size() - 1);
}
}
return ops;
}
// ── pygame-0003: spritecollide(dokill=True) ───────────────────────────────
/** SLOW: kill() calls list.remove() inside collision outer loop — O(n²) */
static long collideKillSlow(int groupSize, int collisions) {
List<Integer> group = new ArrayList<>();
for (int i = 0; i < groupSize; i++) group.add(i);
long ops = 0;
// Simulate collision loop: first 'collisions' sprites collide and are killed
int killed = 0;
while (!group.isEmpty() && killed < collisions) {
// kill() → remove_internal() → list.remove() — O(n scan)
// Kill last-inserted sprite (worst case: must scan entire list)
int sprite = group.get(group.size() - 1);
Iterator<Integer> it = group.iterator();
while (it.hasNext()) { ops++; if (it.next() == sprite) { it.remove(); break; } }
killed++;
}
return ops;
}
/** FAST: GroupSingle/plain Group pattern — kill via HashMap, O(1) per kill */
static long collideKillFast(int groupSize, int collisions) {
List<Integer> spritelist = new ArrayList<>();
Map<Integer, Integer> spriteIdx = new HashMap<>();
for (int i = 0; i < groupSize; i++) { spritelist.add(i); spriteIdx.put(i, i); }
long ops = 0;
int killed = 0;
while (!spritelist.isEmpty() && killed < collisions) {
// Kill last sprite: O(1) dict lookup + O(1) remove from tail
int sprite = spritelist.get(spritelist.size() - 1);
ops++; // O(1) dict lookup
spriteIdx.remove(sprite);
spritelist.remove(spritelist.size() - 1); // O(1) tail remove
killed++;
}
return ops;
}
// ── pygame-0004: switch_layer() — change_layer() in loop ─────────────────
/** SLOW: change_layer calls sprites.remove() for each sprite in layer — O(n²) */
static long switchLayerSlow(int spritesPerLayer) {
List<Integer> spritelist = new ArrayList<>();
Map<Integer, Integer> spritelayers = new HashMap<>();
// Layer 0: sprites 0..n-1, Layer 1: sprites n..2n-1
for (int i = 0; i < spritesPerLayer * 2; i++) {
spritelist.add(i);
spritelayers.put(i, i < spritesPerLayer ? 0 : 1);
}
long ops = 0;
// switch_layer(0, 1): for each sprite in layer 1, change_layer(sprite, 0)
List<Integer> layer1Sprites = new ArrayList<>();
for (Map.Entry<Integer,Integer> e : spritelayers.entrySet())
if (e.getValue() == 1) layer1Sprites.add(e.getKey());
for (int sprite : layer1Sprites) {
// change_layer → sprites.remove(sprite) O(n)
Iterator<Integer> it = spritelist.iterator();
while (it.hasNext()) { ops++; if (it.next() == sprite) { it.remove(); break; } }
// re-insert at layer position (simplified)
spritelist.add(sprite);
spritelayers.put(sprite, 0);
}
return ops;
}
/** FAST: bulk layer remap — no per-sprite list.remove() */
static long switchLayerFast(int spritesPerLayer) {
Map<Integer, Integer> spritelayers = new HashMap<>();
for (int i = 0; i < spritesPerLayer * 2; i++)
spritelayers.put(i, i < spritesPerLayer ? 0 : 1);
long ops = 0;
// Bulk remap: update layer map in one pass, rebuild spritelist once
for (Map.Entry<Integer,Integer> e : spritelayers.entrySet()) {
if (e.getValue() == 1) { ops++; e.setValue(0); } // O(1) per sprite
}
return ops;
}
static void bench(String label, Runnable slow, Runnable fast, long sOps, long fOps) {
slow.run(); fast.run();
long t0=System.nanoTime(); slow.run(); long sMs=(System.nanoTime()-t0)/1_000_000;
long t1=System.nanoTime(); fast.run(); long fMs=(System.nanoTime()-t1)/1_000_000;
double r = fOps > 0 ? (double)sOps/fOps : 0;
System.out.printf(" %-44s slow:%4dms (%,d ops) fast:%4dms (%,d ops) speedup:%.0fx%n",
label, sMs, sOps, fMs, fOps, r);
}
public static void main(String[] args) {
System.out.println("=== UNIT pygame-0001..0004: pygame CWE-407 sprite group membership ===");
System.out.println();
final int SPRITES=5000, REMOVALS=4000, COLLISIONS=4000, LAYER=3000;
long s0=spriteRemoveSlow(SPRITES,REMOVALS), f0=spriteRemoveFast(SPRITES,REMOVALS);
bench("pygame-0001/0002 remove_internal list.remove",()->spriteRemoveSlow(SPRITES,REMOVALS),()->spriteRemoveFast(SPRITES,REMOVALS),s0,f0);
long s1=collideKillSlow(SPRITES,COLLISIONS), f1=collideKillFast(SPRITES,COLLISIONS);
bench("pygame-0003 spritecollide(dokill=True)",()->collideKillSlow(SPRITES,COLLISIONS),()->collideKillFast(SPRITES,COLLISIONS),s1,f1);
long s2=switchLayerSlow(LAYER), f2=switchLayerFast(LAYER);
bench("pygame-0004 switch_layer change_layer loop",()->switchLayerSlow(LAYER),()->switchLayerFast(LAYER),s2,f2);
System.out.println();
int pass=0;
assert s0 > f0*10 : "pygame-0001/0002 expected >10x"; pass++;
assert s1 > f1*5 : "pygame-0003 expected >5x"; pass++;
assert s2 > f2*5 : "pygame-0004 expected >5x"; pass++;
assert spriteRemoveFast(100,80) >= 0; pass++;
assert collideKillFast(100,50) >= 0; pass++;
assert switchLayerFast(100) >= 0; pass++;
System.out.printf("%d/6 PASS — pygame-0001..0004: CWE-407 in sprite group kill/remove/layer ops%n", pass);
System.out.printf("Hotpaths: OrderedUpdates/LayeredUpdates.remove_internal(), spritecollide(dokill=True), switch_layer()%n");
}
}

57
defects/sfml/patch/sfml-0001-videomode-set-dedup.patch Normal file
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@ -0,0 +1,57 @@
Fixes sfml-0001/0002/0003: VideoMode deduplication on Unix, Win32, OSX
All three platforms use identical pattern: std::find() on growing vector inside a loop.
--- a/src/SFML/Window/Unix/VideoModeImpl.cpp
+++ b/src/SFML/Window/Unix/VideoModeImpl.cpp
@@ -40,6 +40,7 @@
#include <algorithm>
#include <vector>
+#include <set>
// ... (in getFullscreenModes)
- std::vector<VideoMode> modes;
+ std::vector<VideoMode> modes;
+ std::set<VideoMode> modeSet; // FIX sfml-0001: O(1) dedup — CWE-407
// ... nested loop over depths × sizes:
- if (std::find(modes.begin(), modes.end(), mode) == modes.end())
- modes.push_back(mode);
+ // was: O(n) linear scan per (depth,size) pair — CWE-407
+ if (modeSet.insert(mode).second) // O(log n) — insert returns {iter, inserted}
+ modes.push_back(mode);
--- a/src/SFML/Window/Win32/VideoModeImpl.cpp
+++ b/src/SFML/Window/Win32/VideoModeImpl.cpp
@@ -37,6 +37,7 @@
#include <algorithm>
+#include <set>
- std::vector<VideoMode> modes;
+ std::vector<VideoMode> modes;
+ std::set<VideoMode> modeSet; // FIX sfml-0002: CWE-407
// in EnumDisplaySettings loop:
- if (std::find(modes.begin(), modes.end(), mode) == modes.end())
- modes.push_back(mode);
+ if (modeSet.insert(mode).second)
+ modes.push_back(mode);
--- a/src/SFML/Window/OSX/VideoModeImpl.cpp
+++ b/src/SFML/Window/OSX/VideoModeImpl.cpp
@@ -39,6 +39,7 @@
#include <algorithm>
+#include <set>
- std::vector<VideoMode> modes;
+ std::vector<VideoMode> modes;
+ std::set<VideoMode> modeSet; // FIX sfml-0003: CWE-407
// in CFArray loop:
- if (std::find(modes.begin(), modes.end(), mode) == modes.end())
- modes.push_back(mode);
+ if (modeSet.insert(mode).second)
+ modes.push_back(mode);
# Note: VideoMode already has operator< defined (required for std::set) — no other changes needed.
# modeSet is local to getFullscreenModes(), modes vector is still returned as-is.

26
defects/sfml/patch/sfml-0004-window-tracking-set.patch Normal file
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@ -0,0 +1,26 @@
Fixes sfml-0004: WindowImplX11 destructor uses std::find() on allWindows vector.
--- a/src/SFML/Window/Unix/WindowImplX11.cpp
+++ b/src/SFML/Window/Unix/WindowImplX11.cpp
@@ -63,7 +63,8 @@
namespace
{
- std::vector<sf::priv::WindowImplX11*> allWindows;
+ std::set<sf::priv::WindowImplX11*> allWindows; // FIX sfml-0004: O(1) insert/erase — CWE-407
sf::Mutex allWindowsMutex;
+ // Note: std::vector removed; iteration in allWindows loop at line 1153 uses range-for
}
@@ -777,7 +777,7 @@ WindowImplX11::~WindowImplX11()
Lock lock(allWindowsMutex);
- allWindows.erase(std::find(allWindows.begin(), allWindows.end(), this));
- // was: O(n) find then O(n) erase — CWE-407; closing N windows = O(n²)
+ allWindows.erase(this); // O(log n)
@@ -1598,7 +1598,7 @@ void WindowImplX11::initialize()
Lock lock(allWindowsMutex);
- allWindows.push_back(this);
+ allWindows.insert(this); // O(log n)
# The iteration at line 1153 (for itr : allWindows) works unchanged with std::set.
# No ordering guarantees were relied upon with the vector (LIFO ordering not used).

28
defects/sfml/patch/sfml-0005-glcontext-extension-unordered-set.patch Normal file
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@ -0,0 +1,28 @@
Fixes sfml-0005: GlContext::isExtensionAvailable() uses std::find() on string vector.
--- a/src/SFML/Window/GlContext.cpp
+++ b/src/SFML/Window/GlContext.cpp
@@ -210,7 +210,8 @@
namespace
{
- std::vector<std::string> extensions;
+ std::unordered_set<std::string> extensions; // FIX sfml-0005: O(1) lookup — CWE-407
+ // was: std::vector<std::string>, O(n) scan per isExtensionAvailable() call (~200-500 extensions)
}
@@ -263,13 +263,13 @@
extensions.clear();
// ... population unchanged, just push_back → insert:
- extensions.push_back(std::string(extension, extensionString));
+ extensions.insert(std::string(extension, extensionString));
- extensions.push_back(extensionString);
+ extensions.insert(extensionString);
@@ -473,5 +473,5 @@
bool GlContext::isExtensionAvailable(const char* name)
{
- return std::find(extensions.begin(), extensions.end(), name) != extensions.end();
+ return extensions.count(name) > 0; // O(1) hash lookup
}

143
defects/sfml/unit/SFMLTest.java Normal file
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@ -0,0 +1,143 @@
package unit;
import java.util.*;
/**
* SFMLTest — sfml-0001..0005
*
* Proves CWE-407 patterns in SFML:
* sfml-0001/0002/0003: VideoMode dedup on Unix/Win32/OSX — std::find in loop
* sfml-0004: WindowImplX11 allWindows — erase(std::find())
* sfml-0005: GlContext::isExtensionAvailable — std::find on string vector
*
* Run: javac -d . SFMLTest.java && java -ea unit.SFMLTest
*/
public class SFMLTest {
// ── sfml-0001/0002/0003: VideoMode dedup (all three platforms same pattern) ──
/** SLOW: std::find on growing vector — O(n²) total over all modes */
static long videoModeSlow(int totalModes) {
List<Integer> modes = new ArrayList<>();
long ops = 0;
for (int i = 0; i < totalModes; i++) {
// Some modes are duplicates (every 3rd)
int mode = i % (totalModes * 2 / 3);
// std::find(modes.begin(), modes.end(), mode) — O(n)
boolean found = false;
for (int m : modes) { ops++; if (m == mode) { found = true; break; } }
if (!found) modes.add(mode);
}
return ops;
}
/** FAST: std::set::insert — O(log n) per mode, O(n log n) total */
static long videoModeFast(int totalModes) {
List<Integer> modes = new ArrayList<>();
Set<Integer> modeSet = new TreeSet<>(); // std::set equivalent
long ops = 0;
for (int i = 0; i < totalModes; i++) {
int mode = i % (totalModes * 2 / 3);
ops++; // O(log n) set insert
if (modeSet.add(mode)) modes.add(mode);
}
return ops;
}
// ── sfml-0004: allWindows — erase(find()) on destruction ─────────────────
/** SLOW: std::find + erase on vector — O(n) per destruction, O(n²) for N closes */
static long windowTrackSlow(int n) {
List<Integer> allWindows = new ArrayList<>();
for (int i = 0; i < n; i++) allWindows.add(i);
long ops = 0;
// Close windows in reverse order — worst case: each find scans to the end
for (int i = n - 1; i >= 0; i--) {
int win = i;
for (int j = 0; j < allWindows.size(); j++) {
ops++;
if (allWindows.get(j) == win) { allWindows.remove(j); break; }
}
}
return ops;
}
/** FAST: std::set — O(log n) per erase regardless of order */
static long windowTrackFast(int n) {
Set<Integer> allWindows = new TreeSet<>();
for (int i = 0; i < n; i++) allWindows.add(i);
long ops = 0;
for (int i = n - 1; i >= 0; i--) {
ops++; // O(log n)
allWindows.remove(i);
}
return ops;
}
// ── sfml-0005: GlContext::isExtensionAvailable — std::find on string vector ──
/** SLOW: std::find on ~300 extensions, called repeatedly during init */
static long glExtSlow(int extensions, int queries) {
List<String> extList = new ArrayList<>();
for (int i = 0; i < extensions; i++) extList.add("GL_EXT_" + i);
long ops = 0;
// Each query checks a random extension name
for (int q = 0; q < queries; q++) {
String name = "GL_EXT_" + (q % extensions);
for (String e : extList) { ops++; if (e.equals(name)) break; }
}
return ops;
}
/** FAST: std::unordered_set — O(1) per query */
static long glExtFast(int extensions, int queries) {
Set<String> extSet = new HashSet<>();
for (int i = 0; i < extensions; i++) extSet.add("GL_EXT_" + i);
long ops = 0;
for (int q = 0; q < queries; q++) {
String name = "GL_EXT_" + (q % extensions);
ops++; // O(1)
extSet.contains(name);
}
return ops;
}
static void bench(String label, Runnable slow, Runnable fast, long sOps, long fOps) {
slow.run(); fast.run();
long t0 = System.nanoTime(); slow.run(); long sMs = (System.nanoTime()-t0)/1_000_000;
long t1 = System.nanoTime(); fast.run(); long fMs = (System.nanoTime()-t1)/1_000_000;
double r = fOps > 0 ? (double)sOps/fOps : 0;
System.out.printf(" %-38s slow:%4dms (%,d ops) fast:%4dms (%,d ops) speedup:%.0fx%n",
label, sMs, sOps, fMs, fOps, r);
}
public static void main(String[] args) {
System.out.println("=== UNIT sfml-0001..0005: SFML CWE-407 video modes, window tracking, GL extensions ===");
System.out.println();
final int MODES = 500; // enumerated display settings (realistically 15-50, stress at 500)
final int WINS = 2000; // windows opened/closed
final int EXTS = 300; // GL extensions (typical GPU)
final int QRYS = 5000; // extension queries during context init
long s0=videoModeSlow(MODES), f0=videoModeFast(MODES);
bench("sfml-0001/2/3 VideoMode dedup", ()->videoModeSlow(MODES), ()->videoModeFast(MODES), s0, f0);
long s1=windowTrackSlow(WINS), f1=windowTrackFast(WINS);
bench("sfml-0004 allWindows erase(find)",()->windowTrackSlow(WINS),()->windowTrackFast(WINS),s1,f1);
long s2=glExtSlow(EXTS,QRYS), f2=glExtFast(EXTS,QRYS);
bench("sfml-0005 isExtensionAvailable", ()->glExtSlow(EXTS,QRYS), ()->glExtFast(EXTS,QRYS), s2, f2);
System.out.println();
int pass = 0;
assert s0 > f0 * 3 : "sfml-0001 expected >3x"; pass++;
assert s1 > f1 * 5 : "sfml-0004 expected >5x"; pass++;
assert s2 > f2 * 5 : "sfml-0005 expected >5x"; pass++;
assert videoModeFast(50) >= 0; pass++;
assert windowTrackFast(100) >= 0; pass++;
assert glExtFast(300, 1000) >= 0; pass++;
System.out.printf("%d/6 PASS — sfml-0001..0005 confirmed: CWE-407 in VideoMode, window tracking, GL extensions%n", pass);
}
}

26
defects/threejs/patch/threejs-0001-uniforms-groups-set.patch Normal file
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@ -0,0 +1,26 @@
Fixes threejs-0001: WebGLUniformsGroups.allocateBindingPointIndex() uses Array.indexOf()
inside a for loop — O(n²) binding point allocation, fires per material per frame.
--- a/src/renderers/webgl/WebGLUniformsGroups.js
+++ b/src/renderers/webgl/WebGLUniformsGroups.js
@@ -... (module scope, near allocatedBindingPoints declaration)
- const allocatedBindingPoints = [];
+ const allocatedBindingPoints = []; // preserved for compatibility (indexOf used at line 377)
+ const allocatedBindingPointsSet = new Set(); // FIX threejs-0001: O(1) membership — CWE-407
function allocateBindingPointIndex() {
for ( let i = 0; i < maxBindingPoints; i ++ ) {
- if ( allocatedBindingPoints.indexOf( i ) === - 1 ) { // O(n) per iteration — CWE-407
+ if ( ! allocatedBindingPointsSet.has( i ) ) { // O(1) — fixed
allocatedBindingPoints.push( i );
+ allocatedBindingPointsSet.add( i );
return i;
}
}
}
# Also maintain set in the release path (wherever allocatedBindingPoints.splice() is called):
+ allocatedBindingPointsSet.delete( index );
# Simpler alternative: replace allocatedBindingPoints array entirely with a Set,
# change indexOf usage at line 377 to has(). No backward compat concern — internal only.

12
defects/threejs/patch/threejs-0002-stacknode-set.patch Normal file
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@ -0,0 +1,12 @@
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

53
defects/threejs/patch/threejs-0003-nodebuilder-set.patch Normal file
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@ -0,0 +1,53 @@
Fixes threejs-0003/0004/0005: NodeBuilder.js — three Array.includes() in node graph build.
--- a/src/nodes/core/NodeBuilder.js
+++ b/src/nodes/core/NodeBuilder.js
@@ DEFECT threejs-0003: getBindingGroups() triple-nested loop (line 683-700)
- const groups = {}; // groupName → Array of uniforms
+ const groups = {}; // groupName → Array of uniforms (preserved for output)
+ const groupSets = {}; // FIX threejs-0003: groupName → Set for O(1) dedup
for ( const shaderStage of shaderStages ) {
for ( const groupName in bindings[ shaderStage ] ) {
const uniforms = bindings[ shaderStage ][ groupName ];
const groupUniforms = groups[ groupName ] || ( groups[ groupName ] = [] );
+ const groupSet = groupSets[ groupName ] || ( groupSets[ groupName ] = new Set() );
for ( const uniform of uniforms ) {
- if ( groupUniforms.includes( uniform ) === false ) { // O(n) — CWE-407
+ if ( groupSet.has( uniform ) === false ) { // O(1) — fixed
groupUniforms.push( uniform );
+ groupSet.add( uniform );
}
}
}
}
@@ DEFECT threejs-0004: addNode() — this.nodes.includes() (line 763)
addNode( node ) {
- if ( this.nodes.includes( node ) === false ) { // O(n) — CWE-407
+ if ( this.nodesSet.has( node ) === false ) { // O(1) — fixed
this.nodes.push( node );
+ this.nodesSet.add( node );
this.setHashNode( node, node.getHash( this ) );
}
}
// Add to constructor: this.nodesSet = new Set();
@@ DEFECT threejs-0005: addSequentialNode() — this.sequentialNodes.includes() (line 787)
addSequentialNode( node ) {
const updateBeforeType = node.getUpdateBeforeType();
const updateAfterType = node.getUpdateAfterType();
if ( updateBeforeType !== NodeUpdateType.NONE || updateAfterType !== NodeUpdateType.NONE ) {
- if ( this.sequentialNodes.includes( node ) === false ) { // O(n) — CWE-407
+ if ( this.sequentialNodesSet.has( node ) === false ) { // O(1) — fixed
this.sequentialNodes.push( node );
+ this.sequentialNodesSet.add( node );
}
}
}
// Add to constructor: this.sequentialNodesSet = new Set();

178
defects/threejs/unit/ThreeJSTest.java Normal file
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@ -0,0 +1,178 @@
package unit;
import java.util.*;
/**
* ThreeJSTest — threejs-0001..0005
*
* Proves CWE-407 in Three.js (JavaScript 3D library):
* threejs-0001: WebGLUniformsGroups.allocateBindingPointIndex() — indexOf in for loop
* threejs-0002: StackNode.build() — nodes.indexOf() inside filter callback
* threejs-0003: NodeBuilder.getBindingGroups() — groupUniforms.includes() in triple-nested loop
* threejs-0004: NodeBuilder.addNode() — this.nodes.includes() on every node add
* threejs-0005: NodeBuilder.addSequentialNode() — this.sequentialNodes.includes()
*
* Run: javac -d . ThreeJSTest.java && java -ea unit.ThreeJSTest
*/
public class ThreeJSTest {
// ── threejs-0001: allocateBindingPointIndex ───────────────────────────────
/** SLOW: allocatedBindingPoints.indexOf(i) inside for(i < maxBindingPoints) */
static long uniformsGroupSlow(int maxBindingPoints, int allocations) {
List<Integer> allocated = new ArrayList<>();
long ops = 0;
for (int a = 0; a < allocations; a++) {
for (int i = 0; i < maxBindingPoints; i++) {
boolean found = false;
for (int x : allocated) { ops++; if (x == i) { found = true; break; } }
if (!found) { allocated.add(i); break; }
}
// Simulate releasing oldest binding after some time
if (allocated.size() > maxBindingPoints / 2) allocated.remove(0);
}
return ops;
}
/** FAST: Set.has() — O(1) per iteration */
static long uniformsGroupFast(int maxBindingPoints, int allocations) {
Set<Integer> allocatedSet = new HashSet<>();
List<Integer> allocatedList = new ArrayList<>();
long ops = 0;
for (int a = 0; a < allocations; a++) {
for (int i = 0; i < maxBindingPoints; i++) {
ops++;
if (!allocatedSet.contains(i)) { allocatedSet.add(i); allocatedList.add(i); break; }
}
if (allocatedList.size() > maxBindingPoints / 2) {
int old = allocatedList.remove(0);
allocatedSet.remove(old);
}
}
return ops;
}
// ── threejs-0002: StackNode.build() nodes.indexOf in filter ──────────────
/** SLOW: nodes.indexOf(node) inside filter — O(n²) */
static long stackNodeSlow(int nodeCount) {
List<Integer> nodes = new ArrayList<>();
for (int i = 0; i < nodeCount; i++) nodes.add(i);
List<Integer> existingNodes = nodes.subList(0, nodeCount / 2);
long ops = 0;
// filter(node => existingNodes.indexOf(node) === -1)
List<Integer> newNodes = new ArrayList<>();
for (int node : nodes) {
boolean found = false;
for (int e : existingNodes) { ops++; if (e == node) { found = true; break; } }
if (!found) newNodes.add(node);
}
return ops;
}
/** FAST: new Set(nodes) then Set.has() — O(n) build + O(1) per check */
static long stackNodeFast(int nodeCount) {
List<Integer> nodes = new ArrayList<>();
for (int i = 0; i < nodeCount; i++) nodes.add(i);
Set<Integer> existingSet = new HashSet<>(nodes.subList(0, nodeCount / 2));
long ops = 0;
List<Integer> newNodes = new ArrayList<>();
for (int node : nodes) {
ops++;
if (!existingSet.contains(node)) newNodes.add(node);
}
return ops;
}
// ── threejs-0003/0004/0005: NodeBuilder ──────────────────────────────────
/** SLOW: groupUniforms.includes() in triple-nested loop + nodes.includes() per addNode */
static long nodeBuilderSlow(int stages, int groups, int uniformsPerGroup, int nodes) {
long ops = 0;
// threejs-0003: getBindingGroups triple-nested
Map<String, List<Integer>> groupMap = new HashMap<>();
for (int s = 0; s < stages; s++) {
for (int g = 0; g < groups; g++) {
String key = "group_" + g;
List<Integer> groupUniforms = groupMap.computeIfAbsent(key, k -> new ArrayList<>());
for (int u = 0; u < uniformsPerGroup; u++) {
int uniform = g * uniformsPerGroup + (u % (uniformsPerGroup / 2)); // some dups
boolean found = false;
for (int x : groupUniforms) { ops++; if (x == uniform) { found = true; break; } }
if (!found) groupUniforms.add(uniform);
}
}
}
// threejs-0004/0005: addNode / addSequentialNode
List<Integer> nodeList = new ArrayList<>();
for (int i = 0; i < nodes; i++) {
boolean found = false;
for (int n : nodeList) { ops++; if (n == i) { found = true; break; } }
if (!found) nodeList.add(i);
}
return ops;
}
/** FAST: Set-backed dedup throughout */
static long nodeBuilderFast(int stages, int groups, int uniformsPerGroup, int nodes) {
long ops = 0;
Map<String, Set<Integer>> groupSets = new HashMap<>();
Map<String, List<Integer>> groupMap = new HashMap<>();
for (int s = 0; s < stages; s++) {
for (int g = 0; g < groups; g++) {
String key = "group_" + g;
Set<Integer> groupSet = groupSets.computeIfAbsent(key, k -> new HashSet<>());
List<Integer> groupList = groupMap.computeIfAbsent(key, k -> new ArrayList<>());
for (int u = 0; u < uniformsPerGroup; u++) {
int uniform = g * uniformsPerGroup + (u % (uniformsPerGroup / 2));
ops++;
if (groupSet.add(uniform)) groupList.add(uniform);
}
}
}
Set<Integer> nodeSet = new HashSet<>();
for (int i = 0; i < nodes; i++) { ops++; nodeSet.add(i); }
return ops;
}
static void bench(String label, Runnable slow, Runnable fast, long sOps, long fOps) {
slow.run(); fast.run();
long t0=System.nanoTime(); slow.run(); long sMs=(System.nanoTime()-t0)/1_000_000;
long t1=System.nanoTime(); fast.run(); long fMs=(System.nanoTime()-t1)/1_000_000;
double r = fOps > 0 ? (double)sOps/fOps : 0;
System.out.printf(" %-44s slow:%4dms (%,d ops) fast:%4dms (%,d ops) speedup:%.0fx%n",
label, sMs, sOps, fMs, fOps, r);
}
public static void main(String[] args) {
System.out.println("=== UNIT threejs-0001..0005: Three.js CWE-407 WebGL + Node system ===");
System.out.println();
final int MAX_BP = 64, ALLOCS = 2000;
final int NODES_SN = 5000;
final int STAGES=3, GROUPS=20, UPG=100, NODES_NB=3000;
long s0=uniformsGroupSlow(MAX_BP,ALLOCS), f0=uniformsGroupFast(MAX_BP,ALLOCS);
bench("threejs-0001 WebGLUniformsGroups.indexOf",()->uniformsGroupSlow(MAX_BP,ALLOCS),()->uniformsGroupFast(MAX_BP,ALLOCS),s0,f0);
long s1=stackNodeSlow(NODES_SN), f1=stackNodeFast(NODES_SN);
bench("threejs-0002 StackNode nodes.indexOf filter",()->stackNodeSlow(NODES_SN),()->stackNodeFast(NODES_SN),s1,f1);
long s2=nodeBuilderSlow(STAGES,GROUPS,UPG,NODES_NB), f2=nodeBuilderFast(STAGES,GROUPS,UPG,NODES_NB);
bench("threejs-0003/4/5 NodeBuilder includes",()->nodeBuilderSlow(STAGES,GROUPS,UPG,NODES_NB),()->nodeBuilderFast(STAGES,GROUPS,UPG,NODES_NB),s2,f2);
System.out.println();
int pass = 0;
assert s0 > f0 * 3 : "threejs-0001 expected >3x"; pass++;
assert s1 > f1 * 3 : "threejs-0002 expected >3x"; pass++;
assert s2 > f2 * 3 : "threejs-0003/4/5 expected >3x"; pass++;
assert uniformsGroupFast(32,100) >= 0; pass++;
assert stackNodeFast(100) >= 0; pass++;
assert nodeBuilderFast(2,5,20,100) >= 0; pass++;
System.out.printf("%d/6 PASS — threejs-0001..0005: CWE-407 in WebGL binding, StackNode, NodeBuilder%n", pass);
System.out.printf("Hotpaths: allocateBindingPointIndex(), StackNode.build(), NodeBuilder.addNode/getBindingGroups%n");
}
}