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-rw-r--r--libstdc++-v3/include/std/span2
1 files changed, 1 insertions, 1 deletions
diff --git a/libstdc++-v3/include/std/span b/libstdc++-v3/include/std/span
index 251fed9..b336332 100644
--- a/libstdc++-v3/include/std/span
+++ b/libstdc++-v3/include/std/span
@@ -145,7 +145,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
constexpr
span() noexcept
- requires ((_Extent + 1u) <= 1u)
+ requires (_Extent == dynamic_extent || _Extent == 0)
: _M_ptr(nullptr), _M_extent(0)
{ }