2 @subsection @code{fstat}
5 POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9799919799/functions/fstat.html}
9 Portability problems fixed by Gnulib:
12 This function crashes when invoked with invalid arguments on some platforms:
15 On platforms where @code{off_t} is a 32-bit type, @code{fstat} may not correctly
16 report the size of files or block devices 2 GiB and larger..
17 @xref{Large File Support}.
19 On Linux/x86 and Linux/x86_64, applications compiled in 32-bit mode cannot
20 access files that happen to have a 64-bit inode number. This can occur with
21 file systems such as XFS (typically on large disks) and NFS.
22 @xref{Large File Support}.
24 On macOS 12.6, when this function yields a timestamp with a
25 nonpositive @code{tv_sec} value, @code{tv_nsec} might be in the range
26 @minus{}999999999..@minus{}1, representing a negative nanoseconds
27 offset from @code{tv_sec}. Solaris 11.4 is similar, except that
28 @code{tv_sec} might also be @minus{}1000000000.
30 The @code{st_atime}, @code{st_ctime}, @code{st_mtime} fields are affected by
31 the current time zone and by the DST flag of the current time zone on some
33 mingw, MSVC 14 (when the environment variable @env{TZ} is set).
36 Portability problems not fixed by Gnulib:
39 @xref{sys/stat.h}, for general portability problems with @code{struct stat}.
41 On Cygwin, @code{fstat} applied to the file descriptors 0 and 1, returns
42 different @code{st_ino} values, even if standard input and standard output
43 are not redirected and refer to the same terminal.