16 lines · c
1#if __LP64__2# define SANITIZER_WORDSIZE 643#else4# define SANITIZER_WORDSIZE 325#endif6 7// This is a simplified version of GetMaxVirtualAddress function.8unsigned long SystemVMA () {9#if SANITIZER_WORDSIZE == 6410 unsigned long vma = (unsigned long)__builtin_frame_address(0);11 return SANITIZER_WORDSIZE - __builtin_clzll(vma);12#else13 return SANITIZER_WORDSIZE;14#endif15}16