The C standard specifies two constants, EXIT_SUCCESS and EXIT_FAILURE, that may be passed to exit() to indicate successful or unsuccessful termination, respectively. The value of status in exit(status) may be EXIT_SUCCESS, EXIT_FAILURE, or any other value, though only the least significant 8 bits (that is, status & 0377) shall be available to a waiting parent proces. So exit(-1) return 255. Use the C standard EXIT_SUCCESS and EXIT_FAILURE to indicate the program exit status instead of "0" or "1", respectively. In <stdlib.h> EXIT_FAILURE has the value "1": use EXIT_FAILURE even if the program uses exit(-1), ie 255, for consistency. Signed-off-by: Elia Pinto <gitter.spiros@xxxxxxxxx> --- archive.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/archive.c b/archive.c index e29d0e00f6..c8c1df59de 100644 --- a/archive.c +++ b/archive.c @@ -590,7 +590,7 @@ static int parse_archive_args(int argc, const char **argv, for (i = 0; i < nr_archivers; i++) if (!is_remote || archivers[i]->flags & ARCHIVER_REMOTE) printf("%s\n", archivers[i]->name); - exit(0); + exit(EXIT_SUCCESS); } if (!format && name_hint) -- 2.35.1