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-rw-r--r--src/corelib/tools/qspan.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/corelib/tools/qspan.h b/src/corelib/tools/qspan.h
index c9de1005a77..d6ae2570ae3 100644
--- a/src/corelib/tools/qspan.h
+++ b/src/corelib/tools/qspan.h
@@ -297,7 +297,7 @@ public:
: QSpanBase(il.begin(), il.size())
{}
-#if __cpp_lib_span
+#ifdef __cpp_lib_span
template <typename S, size_t N, if_qualification_conversion<S> = true>
Q_IMPLICIT constexpr QSpanBase(std::span<S, N> other) noexcept
: QSpanBase(other.data(), other.size())