SIZE_T_MAX - NtDoc

#ifndef _PHNT_WINDOWS_H
#ifndef SIZE_T_MAX
#ifdef _WIN64

#define SIZE_T_MAX 0xffffffffffffffffui64

#endif
#endif
#endif
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#ifndef _PHNT_WINDOWS_H
#ifndef SIZE_T_MAX
#ifdef _WIN64
// ...
#else

#define SIZE_T_MAX 0xffffffffUL

#endif
#endif
#endif
View code on GitHub