1 files changed, 40 insertions, 0 deletions
diff --git a/memory/build/fallback.cpp b/memory/build/fallback.cpp
new file mode 100644
index 0000000000..6f1791bed9
--- /dev/null
+++ b/memory/build/fallback.cpp
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "mozmemory.h"
+#include "mozjemalloc.h"
+#include <stdlib.h>
+
+#ifndef HAVE_MEMALIGN
+MOZ_MEMORY_API void* memalign(size_t aAlignment, size_t aSize) {
+#  ifdef XP_WIN
+  return _aligned_malloc(aSize, aAlignment);
+#  else
+  void* ret;
+  if (posix_memalign(&ret, aAlignment, aSize) != 0) {
+    return nullptr;
+  }
+  return ret;
+#  endif
+}
+#endif
+
+struct SystemMalloc {
+#define MALLOC_DECL(name, return_type, ...)                                \
+  static inline return_type name(ARGS_HELPER(TYPED_ARGS, ##__VA_ARGS__)) { \
+    return ::name(ARGS_HELPER(ARGS, ##__VA_ARGS__));                       \
+  }
+#define MALLOC_FUNCS MALLOC_FUNCS_MALLOC_BASE
+#include "malloc_decls.h"
+};
+
+#define MALLOC_DECL(name, return_type, ...)                                   \
+  MOZ_JEMALLOC_API return_type name(ARGS_HELPER(TYPED_ARGS, ##__VA_ARGS__)) { \
+    return DummyArenaAllocator<SystemMalloc>::name(                           \
+        ARGS_HELPER(ARGS, ##__VA_ARGS__));                                    \
+  }
+#define MALLOC_FUNCS MALLOC_FUNCS_ARENA
+#include "malloc_decls.h"