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MoltenVK #2220 — `allowGPUOptimizedContents` predicate probe

Companion artifact for KhronosGroup/MoltenVK#2220.

The probe creates a VkImage for each combination of (format, usage, create-flags) in a small matrix and reads back the resulting MTLTexture.allowGPUOptimizedContents (and MTLTexture.usage) via VK_EXT_metal_objects. It exists to make the impact of a candidate predicate change in MVKImagePlane::newMTLTextureDescriptor() visible without needing to reproduce the end-to-end channel corruption (which only manifests inside specific game render pipelines).

Build

# Point MVK at any MoltenVK source tree that has been built (Package/Debug/MoltenVK or Package/Release/MoltenVK)

name	audit-instructions
description	Audit and maintain CLAUDE.md and system-prompt.md for compaction resilience. Use when the user says "/audit-instructions", "audit my instructions", "check my CLAUDE.md", "incorporate corrections", "review corrections.md", or wants to ensure instruction files survive context compaction. Also use proactively after significant changes to instruction files.

Audit Instructions

You are auditing the instruction files that govern Claude Code behavior. These files must survive context compaction with full authority. Every rule must be written so that even after lossy compression of conversation history, the model still follows it.

	#!/usr/bin/env bash

	set -euo pipefail

	# =============================================================================
	# XCode Cache, Simulator & SDK Cleanup Script
	# by @skooch
	# =============================================================================
	#
	# Removes old SDKs, simulators, simulator images, caches, and device support

	Object.defineProperty(window, 'localStorage', {
	configurable: true,
	enumerable: true,
	value: new Proxy(localStorage, {
	set: function (ls, prop, value) {
	console.log(`direct assignment: ${prop} = ${value}`);
	debugger;
	ls[prop] = value;
	return true;
	},

	#!/usr/bin/env bash

	while true; do
	echo "ss23 rly, completely, sux"
	sleep 1
	done

	#!/usr/bin/env bash

	while true; do
	echo "ss23 rly sux"
	sleep 1
	done

	/*

	* Draw bouncing ball pattern on screen

	* Increase/decrease ball pattern number by up/down key

	* Read sound data from boot disk and play back as BGM

	* Copyright (C) 1996 Sony Computer Entertainment Inc.

	1 Were no strangers to love
	2 You know the rules and so do I
	3 A full commitments
	4 What Im thinking of
	5 You wouldn't get this
	6 From any other guy
	7 I just wanna tell you
	8 How Im feeling
	9 Gotta make you understand
	10 Never gonna give you up

	Afrikaans: Geen
	Arabic: لا
	Azerbaijani: Yox
	Belarusian: няма
	Bulgarian: Не
	Bengali: না
	Bosnian: ne
	Catalan: No
	Cebuano: Dili
	Czech: Ne

	The exploit was posted at Hacker News comments thread, so it's time to
	disclose the full story.

	Nikolay Ermishkin from the Mail.Ru Security Team discovered several
	vulnerabilities in ImageMagick.
	We've reported these issues to developers of ImageMagick and they made a
	fix for RCE in sources and released new version (6.9.3-9 released
	2016-04-30 http://legacy.imagemagick.org/script/changelog.php), but this
	fix seems to be incomplete. We are still working with developers.

skooch skooch

MoltenVK #2220 — allowGPUOptimizedContents predicate probe

Build

Audit Instructions

Files to audit

MoltenVK #2220 — `allowGPUOptimizedContents` predicate probe