Fix ASAN failure in FutureDAG test

[folly.git] / folly / portability / SysMman.cpp

diff --git a/folly/portability/SysMman.cpp b/folly/portability/SysMman.cpp
old mode 100755 (executable)
new mode 100644 (file)
index 8440026..af76d8b
--- a/folly/portability/SysMman.cpp
+++ b/folly/portability/SysMman.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright 2016 Facebook, Inc.
+ * Copyright 2017 Facebook, Inc.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -17,7 +17,9 @@
 #include <folly/portability/SysMman.h>
 
 #ifdef _WIN32
+
 #include <cassert>
+
 #include <folly/Portability.h>
 #include <folly/portability/Windows.h>
 
@@ -56,7 +58,7 @@ static size_t alignToAllocationGranularity(size_t s) {
 }
 
 extern "C" {
-int madvise(const void* addr, size_t len, int advise) {
+int madvise(const void* /* addr */, size_t /* len */, int /* advise */) {
   // We do nothing at all.
   // Could probably implement dontneed via VirtualAlloc
   // with the MEM_RESET and MEM_RESET_UNDO flags.
@@ -127,7 +129,7 @@ void* mmap(void* addr, size_t length, int prot, int flags, int fd, off_t off) {
     ret = MapViewOfFileEx(
         fmh,
         accessFlags,
-        (DWORD)((off >> 32) & 0xFFFFFFFF),
+        (DWORD)(0), // off_t is only 32-bit :(
         (DWORD)(off & 0xFFFFFFFF),
         0,
         addr);
@@ -213,4 +215,5 @@ int munmap(void* addr, size_t length) {
   return 0;
 }
 }
+
 #endif