span-lite: backport fix to avoid -Wundef error in C++20

[babeltrace.git] / src / cpp-common / vendor / span-lite / span.hpp

diff --git a/src/cpp-common/vendor/span-lite/span.hpp b/src/cpp-common/vendor/span-lite/span.hpp
index 3d2d86a427f48c55d108b45302ac45789fe9bc15..9a7182f5b0b2c4e93b5307c2f2d667eb6ea51bc7 100644 (file)
--- a/src/cpp-common/vendor/span-lite/span.hpp
+++ b/src/cpp-common/vendor/span-lite/span.hpp
@@ -1870,7 +1870,7 @@ using span_lite::byte_span;
 
 #endif // span_FEATURE( BYTE_SPAN )
 
-#if span_HAVE( STRUCT_BINDING )
+#if !span_USES_STD_SPAN && span_HAVE( STRUCT_BINDING )
 
 #if   span_CPP14_OR_GREATER
 # include <tuple>
@@ -1938,7 +1938,7 @@ span_constexpr ElementType const & get( nonstd::span<ElementType, Extent> const
 
 } // end namespace std
 
-#endif // span_HAVE( STRUCT_BINDING )
+#endif // !span_USES_STD_SPAN && span_HAVE( STRUCT_BINDING )
 
 #if ! span_USES_STD_SPAN
 span_RESTORE_WARNINGS()