From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: PJ Reiniger <pj.reiniger@gmail.com>
Date: Tue, 3 May 2022 22:16:10 -0400
Subject: [PATCH 12/36] Extra collections features

---
 llvm/lib/Support/raw_ostream.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/llvm/lib/Support/raw_ostream.cpp b/llvm/lib/Support/raw_ostream.cpp
index 57d3091fd5cc5b416e814f9f33811f0fa7afe9cf..5bec803ccc76ce287b7ff3ea037d5e490a7af20c 100644
--- a/llvm/lib/Support/raw_ostream.cpp
+++ b/llvm/lib/Support/raw_ostream.cpp
@@ -77,6 +77,14 @@ constexpr raw_ostream::Colors raw_ostream::WHITE;
 constexpr raw_ostream::Colors raw_ostream::SAVEDCOLOR;
 constexpr raw_ostream::Colors raw_ostream::RESET;
 
+namespace {
+// Find the length of an array.
+template <class T, std::size_t N>
+constexpr inline size_t array_lengthof(T (&)[N]) {
+  return N;
+}
+}  // namespace
+
 raw_ostream::~raw_ostream() {
   // raw_ostream's subclasses should take care to flush the buffer
   // in their destructors.