From f34b9697c03822bb6908930874fb42493fe0225b Mon Sep 17 00:00:00 2001
From: Paul Licameli <paul.licameli@audacityteam.org>
Date: Sat, 11 Jul 2020 23:44:20 -0400
Subject: [PATCH] Oops, the once_flag must be static!

---
 src/ProjectSerializer.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/ProjectSerializer.cpp b/src/ProjectSerializer.cpp
index f11729901..115b1f5c6 100644
--- a/src/ProjectSerializer.cpp
+++ b/src/ProjectSerializer.cpp
@@ -90,7 +90,7 @@ ProjectSerializer::ProjectSerializer(size_t allocSize)
    mDict.SetBufSize(allocSize);
    mBuffer.SetBufSize(allocSize);
 
-   std::once_flag flag;
+   static std::once_flag flag;
    std::call_once(flag, []{
       // Just once per run, store header information in the unique static
       // dictionary that will be written into each project that is saved.