85   ShadowSegmentEndpoint beg(beg_addr);  in __asan_poison_memory_region()  local
87   if (beg.chunk == end.chunk) {  in __asan_poison_memory_region()
88     CHECK(beg.offset < end.offset);  in __asan_poison_memory_region()
89     s8 value = beg.value;  in __asan_poison_memory_region()
94       if (beg.offset > 0) {  in __asan_poison_memory_region()
95         *beg.chunk = Min(value, beg.offset);  in __asan_poison_memory_region()
97         *beg.chunk = kAsanUserPoisonedMemoryMagic;  in __asan_poison_memory_region()
102   CHECK(beg.chunk < end.chunk);  in __asan_poison_memory_region()
103   if (beg.offset > 0) {  in __asan_poison_memory_region()
105     if (beg.value == 0) {  in __asan_poison_memory_region()
106       *beg.chunk = beg.offset;  in __asan_poison_memory_region()
108       *beg.chunk = Min(beg.value, beg.offset);  in __asan_poison_memory_region()
110     beg.chunk++;  in __asan_poison_memory_region()
112   REAL(memset)(beg.chunk, kAsanUserPoisonedMemoryMagic, end.chunk - beg.chunk);  in __asan_poison_memory_region()
127   ShadowSegmentEndpoint beg(beg_addr);  in __asan_unpoison_memory_region()  local
129   if (beg.chunk == end.chunk) {  in __asan_unpoison_memory_region()
130     CHECK(beg.offset < end.offset);  in __asan_unpoison_memory_region()
131     s8 value = beg.value;  in __asan_unpoison_memory_region()
136       *beg.chunk = Max(value, end.offset);  in __asan_unpoison_memory_region()
140   CHECK(beg.chunk < end.chunk);  in __asan_unpoison_memory_region()
141   if (beg.offset > 0) {  in __asan_unpoison_memory_region()
142     *beg.chunk = 0;  in __asan_unpoison_memory_region()
143     beg.chunk++;  in __asan_unpoison_memory_region()
145   REAL(memset)(beg.chunk, 0, end.chunk - beg.chunk);  in __asan_unpoison_memory_region()