On macOS with Apple Silicon, Memory Integrity Enforcement (MIE) combined with Arm Memory Tagging Extension (MTE) can be a fantastic way to spot heap memory issues. While stack sanitizer support for MTE is generally easier to set up, enabling heap tagging usually requires some specific settings or environment variables. These might not be as well-documented or easily accessible as on other platforms like Linux. Here are a few ways you might try to enable heap tagging with MTE on macOS: Environment Variables: Apple’s documentation and developer tools might not list environment variables for controlling MTE heap tagging as clearly as they do for some other sanitizers. However, you can often find what you need by experimenting with variables that are usually used for debugging and runtime settings. Some common variables to try include: MallocStackLogging: This is mainly for logging the stack, but sometimes related environment variables can affect how the memory allocator works. DYLD_INSERT_LIBRARIES: You might tr
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