Hello. In Japanese version Windows, package Ada.Directories often raises Name_Error with DBCS-filename. I was shocked that Get_Next_Entry reported error when reading dir. I looked for the reason and found gcc/ada/mingw32.h. #define GNAT_UNICODE_SUPPORT was commented out. If GNAT_UNICODE_SUPPORT was defined, GNAT runtime use W-version API and "String" type has UTF-8. I consented. But, GNAT_UNICODE_SUPPORT was NOT defined(it's default), adaint.c, GNAT.Directory_Operations use C runtime. C runtime takes filenames as DBCS, not UTF-8. But, Ada.Directories.Validity(Mingw32-ver) always thinks filenames as UTF-8. It's reason of Name_Error. I want to correct this problem, but I do not understand the policy. If Ada.Directories must take filenames as UTF-8, it's necessary to insert the character-code conversion. If Ada.Directories can take filenames according to the locale, The condition of a-dirval-mingw.adb should be made loose.
And, if all String should always be UTF-8, the correction is needed Ada.Text_IO(System.File_IO), etc packages used C runtime directly like fopen, regardless of GNAT_UNICODE_SUPPORT. Thanks. YT
