make extent_hooks static.

[folly.git] / folly / experimental / AsymmetricMemoryBarrier.cpp

diff --git a/folly/experimental/AsymmetricMemoryBarrier.cpp b/folly/experimental/AsymmetricMemoryBarrier.cpp
index 03dc8249526778ef12feaf21c5a44ba6ee1f8eac..55bec5f141bdc17d35d6347c1477b8d8dc9b4ac4 100644 (file)
--- a/folly/experimental/AsymmetricMemoryBarrier.cpp
+++ b/folly/experimental/AsymmetricMemoryBarrier.cpp
@@ -40,7 +40,7 @@ struct DummyPageCreator {
  private:
   static void* create() {
     auto ptr = mmap(nullptr, 1, PROT_READ, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
-    checkUnixError(reinterpret_cast<uintptr_t>(ptr), "mmap");
+    checkUnixError(reinterpret_cast<ssize_t>(ptr), "mmap");
 
     // Optimistically try to lock the page so it stays resident. Could make
     // the heavy barrier faster.