• Paul Eggert's avatar
    Avoid file time stamp bug on MS-Windows. · 8ea41ea9
    Paul Eggert authored
    * fileio.c (Fwrite_region): Don't use the heuristic on empty files,
    as FAT32 doesn't update time stamps when truncating them.
    Also, check that a file time stamp is not a multiple of 100 ns;
    this should catch all instances of the problem on MS-Windows,
    as its native file system resolution is 100 ns or worse, and
    checking for a non-multiple of 100 ns should impose only a small
    overhead on systems with ns resolution.
    Fixes: debbugs:13149
ChangeLog 861 KB