From adfaf07874de431a24eadbb1908bd1b52817b4ee Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Manuel=20Seeb=C3=B6ck?= <seeboeck@pjm.co.at>
Date: Wed, 31 May 2023 11:29:43 +0200
Subject: [PATCH] optional(POD) explicit operator bool (#699)

---
 include/etl/optional.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/etl/optional.h b/include/etl/optional.h
index 63987319..bb1a3f12 100644
--- a/include/etl/optional.h
+++ b/include/etl/optional.h
@@ -763,7 +763,8 @@ namespace etl
     //***************************************************************************
     /// Bool conversion operator.
     //***************************************************************************
-    ETL_CONSTEXPR14 operator bool() const
+    ETL_CONSTEXPR14 
+    ETL_EXPLICIT operator bool() const
     {
       return valid;
     }