deps: only use memfd_create if available

The function that references it is only used for V8 testing. Refs: nodejs/node-v8#220
nodejs · Mar 1, 2022 · 72f0932 · 72f0932
1 parent 18f11aa
commit 72f0932
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diff --git a/common.gypi b/common.gypi
@@ -36,7 +36,7 @@
 
     # Reset this number to 0 on major V8 upgrades.
     # Increment by one for each non-official patch applied to deps/v8.
-    'v8_embedder_string': '-node.6',
+    'v8_embedder_string': '-node.7',
 
     ##### V8 defaults for Node.js #####
 

diff --git a/deps/v8/src/base/platform/platform-posix.cc b/deps/v8/src/base/platform/platform-posix.cc
@@ -576,7 +576,7 @@ void OS::FreeAddressSpaceReservation(AddressSpaceReservation reservation) {
 #if !defined(V8_OS_MACOS)
 // static
 PlatformSharedMemoryHandle OS::CreateSharedMemoryHandleForTesting(size_t size) {
-#if V8_OS_LINUX && !V8_OS_ANDROID
+#if V8_OS_LINUX && !V8_OS_ANDROID && defined(MFD_CLOEXEC)
   const char* name = "V8MemFDForTesting";
   int fd = memfd_create(name, MFD_CLOEXEC);
   if (fd == -1) return kInvalidSharedMemoryHandle;