Hey, recently our app need adapt to new m1 MacBook and Big Sur. It crashed on newLibraryWithSource of Metal.framework when recompiling our app. I created a minimal demo - https://github.com/FinleyPan/Metal_newLibraryWithSource_Test originated from an official metal example - https://developer.apple.com/documentation/metal/using_a_render_pipeline_to_render_primitives?language=objc to reproduce this problem. To trigger this crash a MacBook(m1 or intel cpu) with Big Sur is needed, besides there are three steps to follow after cloning my demo: open project with xcode, switch target to HelloTriangle-macOS. open File-Project Settings-Advanced, change Build Location to what containing Chinese characters. open Product-Scheme-Edit Scheme, check Address Sanitizer for HelloTriangle-macOS target on Diagnostics tab. Then press command+R to launch the project, this crash will appear. I find this bug on most MacBook with Big Sur of both m1 and intel cpu, while it seemed not appear on iMac Big Sur