fix non-constexpr path in span::size

Reviewed By: Gownta, Mizuchi Differential Revision: D62653433 fbshipit-source-id: 9420d40c1ca0666e53921cbae187746811d005ae
facebook · Sep 14, 2024 · 58f1574 · 58f1574
1 parent 5631fdc
commit 58f1574
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/folly/container/span.h b/folly/container/span.h
@@ -52,7 +52,7 @@ struct span_extent {
   constexpr span_extent(span_extent const&) = default;
   constexpr span_extent& operator=(span_extent const&) = default;
 
-  /* implicit */ operator std::size_t() const noexcept { return N; }
+  /* implicit */ constexpr operator std::size_t() const noexcept { return N; }
 };
 
 template <>
@@ -64,7 +64,9 @@ struct span_extent<dynamic_extent> {
   constexpr span_extent(span_extent const&) = default;
   constexpr span_extent& operator=(span_extent const&) = default;
 
-  /* implicit */ operator std::size_t() const noexcept { return extent; }
+  /* implicit */ constexpr operator std::size_t() const noexcept {
+    return extent;
+  }
 };
 
 /// span