c++ - How to convert ULONG64 to pointer -

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i have ulong64 variable symbol_info structure contains virtual address represented 18446744073709551572 value , need convert void* can pass readprocessmemory function.

if do

reinterpret_cast<void*>(psyminfo->address)

it gives me ffffffd4.

why? doing wrong? how can fix it?

thanks in advance.

not sure why reinterpret_cast not working should use ulongtoptr these kind of things. 

readprocessmemory(process, ulongtoptr(virtual_address), &content, sizeof content, nullptr);

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