diff options
Diffstat (limited to 'lib/libc/stdio/stdio.3')
| -rw-r--r-- | lib/libc/stdio/stdio.3 | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/lib/libc/stdio/stdio.3 b/lib/libc/stdio/stdio.3 index d54ee33067a6..ab5d1fd16184 100644 --- a/lib/libc/stdio/stdio.3 +++ b/lib/libc/stdio/stdio.3 @@ -92,15 +92,19 @@ object is indeterminate (garbage) after a file is closed. .Pp A file may be subsequently reopened, by the same or another program execution, and its contents reclaimed or modified (if it can be repositioned -at the start). If the main function returns to its original caller, or +at the start). +If the main function returns to its original caller, or the .Xr exit 3 function is called, all open files are closed (hence all output -streams are flushed) before program termination. Other methods +streams are flushed) before program termination. +Other methods of program termination may not close files properly and hence -buffered output may be lost. In particular, +buffered output may be lost. +In particular, .Xr _exit 2 -does not flush stdio files. Neither does an exit due to a signal. +does not flush stdio files. +Neither does an exit due to a signal. Buffers are flushed by .Xr abort 3 as required by POSIX, although previous implementations did not. |