From c572855b95069a5a11184dd1ce862ba8499c5be2 Mon Sep 17 00:00:00 2001
From: Marco Bubke <marco.bubke@qt.io>
Date: Fri, 30 Jun 2023 11:18:53 +0200
Subject: [PATCH] Utils: Use _cpp_lib_constexpr_string to test for constexpr
 std::string

Seems not all compiler already implemented constexpr std::string.

Change-Id: I588ef56767125a38fd80d0798ea954c11c8f6237
Reviewed-by: Qt CI Patch Build Bot <ci_patchbuild_bot@qt.io>
Reviewed-by: hjk <hjk@qt.io>
---
 src/libs/utils/smallstringview.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/src/libs/utils/smallstringview.h b/src/libs/utils/smallstringview.h
index fd7f1edfd24..982192c7a44 100644
--- a/src/libs/utils/smallstringview.h
+++ b/src/libs/utils/smallstringview.h
@@ -12,6 +12,12 @@
 #include <string>
 #include <string_view>
 
+#if __cpp_lib_constexpr_string >= 201907L
+#define constexpr_string constexpr
+#else
+#define constexpr_string
+#endif
+
 namespace Utils {
 
 template <typename String>
@@ -63,7 +69,7 @@ public:
         return SmallStringView(data() + position, length);
     }
 
-    constexpr20 operator std::string() const { return std::string(data(), size()); }
+    constexpr_string operator std::string() const { return std::string(data(), size()); }
 
     explicit operator QString() const
     {