usage.c API users: use die_message() for "fatal :" + exit 128

Change code that printed its own "fatal: " message and exited with a
status code of 128 to use the die_message() function added in a
preceding commit.

This change also demonstrates why the return value of
die_message_routine() needed to be that of "report_fn". We have
callers such as the run-command.c::child_err_spew() which would like
to replace its error routine with the return value of
"get_die_message_routine()".

Signed-off-by: Ævar Arnfjörð Bjarmason <avarab@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

1 files changed, 5 insertions, 11 deletions

diff --git a/run-command.c b/run-command.c
index f40df01c77..a790fe9799 100644
--- a/run-command.c
+++ b/run-command.c
@@ -340,15 +340,6 @@ static void child_close_pair(int fd[2])
 	child_close(fd[1]);
 }
 
-/*
- * parent will make it look like the child spewed a fatal error and died
- * this is needed to prevent changes to t0061.
- */
-static void fake_fatal(const char *err, va_list params)
-{
-	vreportf("fatal: ", err, params);
-}
-
 static void child_error_fn(const char *err, va_list params)
 {
 	const char msg[] = "error() should not be called in child\n";
@@ -372,9 +363,10 @@ static void NORETURN child_die_fn(const char *err, va_list params)
 static void child_err_spew(struct child_process *cmd, struct child_err *cerr)
 {
 	static void (*old_errfn)(const char *err, va_list params);
+	report_fn die_message_routine = get_die_message_routine();
 
 	old_errfn = get_error_routine();
-	set_error_routine(fake_fatal);
+	set_error_routine(die_message_routine);
 	errno = cerr->syserr;
 
 	switch (cerr->err) {
@@ -1082,7 +1074,9 @@ static void *run_thread(void *data)
 
 static NORETURN void die_async(const char *err, va_list params)
 {
-	vreportf("fatal: ", err, params);
+	report_fn die_message_fn = get_die_message_routine();
+
+	die_message_fn(err, params);
 
 	if (in_async()) {
 		struct async *async = pthread_getspecific(async_key);