MSVC_label_address_without_.../label_pointer.c

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#include <stdio.h>
#include <intrin.h>
#pragma intrinsic(_ReturnAddress)
char* next_instruction_address(void) { return (char*)_ReturnAddress(); }
int test(
char* (*_next_instruction_address) (void)
) {
char* p_begin = _next_instruction_address() + 13;
begin:;
int a = 2;
int b = 2;
char* p_end = _next_instruction_address() + 13;
end:;
char* save_p_end = p_end;
char* save_p_begin = p_begin;
__asm {
lea eax, begin
mov p_begin, eax
lea eax, end
mov p_end, eax
}
// Сравнение адресов, полученных без вставки и с ней
printf("%lu=%lu\n%lu=%lu\n",
(size_t)save_p_end, (size_t)p_end,
(size_t)save_p_begin, (size_t)p_begin);
return a + b;
}
int main(void) {
test(next_instruction_address);
return 0;
}