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#pragma once 
 
#include <stddef.h> 
 
#if defined(__clang__) 
#if __has_feature(memory_sanitizer) 
extern "C" void __msan_unpoison(const volatile void* ptr, size_t size); 
#ifndef __SANITIZE_MEMORY__ 
#define __SANITIZE_MEMORY__ 
#endif 
#endif 
#endif