make partial functions safer

Author: ssg

src/Bits.cs

@@ -17,15 +17,19 @@ static class Bits
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     internal static ulong PartialBytesToUInt64(ReadOnlySpan<byte> remainingBytes)
     {
-        Span<byte> buffer = stackalloc byte[sizeof(ulong)];
+#pragma warning disable IDE0302 // Simplify collection initialization - we want to keep stackalloc for pre-.NET10
+        Span<byte> buffer = stackalloc byte[sizeof(ulong)] { 0, 0, 0, 0, 0, 0, 0, 0 };
+#pragma warning restore IDE0302 // Simplify collection initialization
         remainingBytes.CopyTo(buffer);
         return BitConverter.ToUInt64(buffer);
     }
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
     internal static uint PartialBytesToUInt32(ReadOnlySpan<byte> remainingBytes)
     {
-        Span<byte> buffer = stackalloc byte[sizeof(uint)];
+#pragma warning disable IDE0302 // Simplify collection initialization - we want to keep stackalloc for pre-.NET10
+        Span<byte> buffer = stackalloc byte[sizeof(uint)] { 0, 0, 0, 0 };
+#pragma warning restore IDE0302 // Simplify collection initialization
         remainingBytes.CopyTo(buffer);
         return BitConverter.ToUInt32(buffer);
     }