From 5982b5c360f6123d3cf72d8883ed9d3da08e8c06 Mon Sep 17 00:00:00 2001
From: yhirose <yuji.hirose.bug@gmail.com>
Date: Sun, 10 May 2020 14:18:03 -0400
Subject: [PATCH] Fix #471

---
 httplib.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/httplib.h b/httplib.h
index fa34904..fb922e7 100644
--- a/httplib.h
+++ b/httplib.h
@@ -50,7 +50,9 @@
 
 #ifndef CPPHTTPLIB_THREAD_POOL_COUNT
 #define CPPHTTPLIB_THREAD_POOL_COUNT                                           \
-  ((std::max)(8u, std::thread::hardware_concurrency() - 1))
+  ((std::max)(8u, std::thread::hardware_concurrency() > 0                      \
+                      ? std::thread::hardware_concurrency() - 1                \
+                      : 0))
 #endif
 
 /*