From 78348bcddd18fa7a25541595576bef1df4fc4022 Mon Sep 17 00:00:00 2001
From: jeffro256 <jeffro256@tutanota.com>
Date: Thu, 22 Jun 2023 09:15:12 +0200
Subject: wallet-rpc: restore from multisig seed

---
 contrib/epee/include/span.h | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'contrib/epee/include/span.h')

diff --git a/contrib/epee/include/span.h b/contrib/epee/include/span.h
index 99c2ebb4f..23bd51f8c 100644
--- a/contrib/epee/include/span.h
+++ b/contrib/epee/include/span.h
@@ -147,6 +147,16 @@ namespace epee
     return {reinterpret_cast<const std::uint8_t*>(src.data()), src.size_bytes()}; 
   }
 
+  //! \return `span<std::uint8_t>` from a STL compatible `src`.
+  template<typename T>
+  constexpr span<std::uint8_t> to_mut_byte_span(T& src)
+  {
+    using value_type = typename T::value_type;
+    static_assert(!std::is_empty<value_type>(), "empty value types will not work -> sizeof == 1");
+    static_assert(!has_padding<value_type>(), "source value type may have padding");
+    return {reinterpret_cast<std::uint8_t*>(src.data()), src.size() * sizeof(value_type)};
+  }
+
   //! \return `span<const std::uint8_t>` which represents the bytes at `&src`.
   template<typename T>
   span<const std::uint8_t> as_byte_span(const T& src) noexcept
-- 
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