What's the purpose of DECLARE_REAL_AND_INTERCEPTOR(malloc) in compiler-rt/lib/asan/asan_interceptor.cpp

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File compiler-rt/lib/asan/asan_interceptors.cpp has the following code

DECLARE_REAL_AND_INTERCEPTOR(void *, malloc, usize)
DECLARE_REAL_AND_INTERCEPTOR(void, free, void *)

But I found that this file does not use malloc and free , or REAL(malloc) and REAL(free) . I would like to ask whether these two lines of code can be removed.