1 files changed, 17 insertions, 0 deletions
diff --git a/support/ToolchainSupport.h b/support/ToolchainSupport.h
index 87e9bd2bc8..b9d9103652 100644
--- a/support/ToolchainSupport.h
+++ b/support/ToolchainSupport.h
@@ -268,6 +268,23 @@ inline std::string to_string(bool value)
     str << std::boolalpha << value;
     return str.str();
 }
+
+// std::align is missing in GCC 4.9
+// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57350
+inline void *align(std::size_t alignment, std::size_t size, void *&ptr, std::size_t &space)
+{
+    std::uintptr_t pn      = reinterpret_cast<std::uintptr_t>(ptr);
+    std::uintptr_t aligned = (pn + alignment - 1) & -alignment;
+    std::size_t    padding = aligned - pn;
+    if(space < size + padding)
+    {
+        return nullptr;
+    }
+
+    space -= padding;
+
+    return ptr = reinterpret_cast<void *>(aligned);
+}
 } // namespace cpp11
 
 namespace cpp14