diff options
Diffstat (limited to 'doc/posix-functions/mmap.texi')
| -rw-r--r-- | doc/posix-functions/mmap.texi | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/doc/posix-functions/mmap.texi b/doc/posix-functions/mmap.texi index 016d0d279e..24a79d554c 100644 --- a/doc/posix-functions/mmap.texi +++ b/doc/posix-functions/mmap.texi @@ -8,6 +8,10 @@ Gnulib module: --- Portability problems fixed by Gnulib: @itemize +@item +On platforms where @code{off_t} is a 32-bit type, this function may not +work correctly across the entire data range of files 2 GiB and larger. +@xref{Large File Support}. @end itemize Portability problems not fixed by Gnulib: @@ -16,10 +20,6 @@ Portability problems not fixed by Gnulib: This function is missing on some platforms: mingw, MSVC 14. @item -On platforms where @code{off_t} is a 32-bit type, this function may not -work correctly across the entire data range of files larger than 2 GB. -The fix is to use the @code{AC_SYS_LARGEFILE} macro. -@item To get anonymous memory, on some platforms, you can use the flags @code{MAP_ANONYMOUS | MAP_PRIVATE} and @code{-1} instead of a file descriptor; on others you have to use a read-only file descriptor of @file{/dev/zero}. |