hanchenye-llvm-project/clang/test/Analysis/sizeofpointer.c

// RUN: %clang_cc1 -analyze -analyzer-checker=core.experimental.SizeofPtr -verify %s

struct s {
};

int f(struct s *p) {
  return sizeof(p); // expected-warning{{The code calls sizeof() on a pointer type. This can produce an unexpected result.}}
}