1 // Copyright 2013 the V8 project authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // MemorySanitizer support. 6 7 #ifndef V8_MSAN_H_ 8 #define V8_MSAN_H_ 9 10 #include "src/globals.h" 11 12 #ifndef __has_feature 13 # define __has_feature(x) 0 14 #endif 15 16 #if __has_feature(memory_sanitizer) && !defined(MEMORY_SANITIZER) 17 # define MEMORY_SANITIZER 18 #endif 19 20 #if defined(MEMORY_SANITIZER) 21 # include <sanitizer/msan_interface.h> // NOLINT 22 23 // Marks a memory range as uninitialized, as if it was allocated here. 24 # define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s) \ 25 __msan_allocated_memory((p), (s)) 26 // Marks a memory range as initialized. 27 #define MSAN_MEMORY_IS_INITIALIZED(p, s) __msan_unpoison((p), (s)) 28 #else 29 # define MSAN_ALLOCATED_UNINITIALIZED_MEMORY(p, s) 30 #define MSAN_MEMORY_IS_INITIALIZED(p, s) 31 #endif 32 33 #endif // V8_MSAN_H_ 34