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https://bugzilla.tianocore.org/show_bug.cgi?id=331 If Nt32 is built using UEFI Shell from the ShellPkg sources, an ASSERT() is generated when a single '\' character is entered at the shell prompt. The WinNtSimpleFileSystemDxe module GetNextFileNameToken() function breaks a file path up into tokens, but it does not handle the case where a FileName ends in a '\' character. It returns an empty string instead of NULL. The fix is to set *FileName to NULL if the remaining file path is an empty string. Cc: Ruiyu Ni <ruiyu.ni@intel.com> Cc: Jaben Carsey <jaben.carsey@intel.com> Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Jaben Carsey <jaben.carsey@intel.com> Reviewed-by: Ruiyu Ni <ruiyu.ni@intel.com>