From f6eb33a2353cdec72e219e0e47cda90787326fc9 Mon Sep 17 00:00:00 2001
From: Andrew Belt <andrewpbelt@gmail.com>
Date: Mon, 16 Dec 2019 11:19:29 -0500
Subject: [PATCH] Use 64-bit atomic for thread counter in random seed
 initialization.

---
 src/random.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/random.cpp b/src/random.cpp
index aaf4db2d..7bc620d6 100644
--- a/src/random.cpp
+++ b/src/random.cpp
@@ -2,6 +2,7 @@
 #include <math.hpp>
 #include <time.h>
 #include <sys/time.h>
+#include <atomic>
 
 
 namespace rack {
@@ -12,7 +13,7 @@ namespace random {
 // from http://xoroshiro.di.unimi.it/xoroshiro128plus.c
 
 thread_local uint64_t xoroshiro128plus_state[2];
-static int threadCounter = 0;
+static std::atomic<uint64_t> threadCounter {0};
 
 static uint64_t rotl(const uint64_t x, int k) {
 	return (x << k) | (x >> (64 - k));