LWG2851 std::filesystem enum classes are now underspecified

Author: Dawn Perchik

source/iostreams.tex

@@ -12957,6 +12957,7 @@
 \pnum
 This enum class specifies constants used to identify file types,
 with the meanings listed in Table~\ref{tab:fs.enum.file_type}.
+The values of the constants are distinct.
 
 \begin{floattable}
 {Enum class \tcode{file_type}}{tab:fs.enum.file_type}
@@ -12999,8 +13000,10 @@
 The \tcode{enum class} type \tcode{copy_options}
 is a bitmask type\iref{bitmask.types} that specifies bitmask constants used to control the semantics of
 copy operations. The constants are specified in option groups with the meanings listed in Table~\ref{tab:fs.enum.copy_options}.
-Constant \tcode{none} is shown in each option group for purposes of exposition;
+The constant \tcode{none} represents the empty bitmask, and
+is shown in each option group for purposes of exposition;
 implementations shall provide only a single definition.
+Every other constant in the table represents a distinct bitmask element.
 
 \begin{floattable}
 {Enum class \tcode{copy_options}}{tab:fs.enum.copy_options}
@@ -13144,6 +13147,8 @@
 The \tcode{enum class} type \tcode{directory_options} is a bitmask
   type\iref{bitmask.types} that specifies bitmask constants used to identify
   directory traversal options, with the meanings listed in Table~\ref{tab:fs.enum.directory_options}.
+  The constant \tcode{none} represents the empty bitmask;
+  every other constant in the table represents a distinct bitmask element.
 
 \begin{floattable}
 {Enum class \tcode{directory_options}}{tab:fs.enum.directory_options}