merge-recursive: Fix rename/rename(1to2) resolution for virtual merge base

diff --git a/run-command.c b/run-command.c
index 2a1041ef6599c84fff6a8d9faf5dea23a2af3ab0..70e8a249d0fe07b6a32b4da4ac8224d1c2f06b1b 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -67,21 +67,24 @@ static int child_notifier = -1;
 
 static void notify_parent(void)
 {
-       ssize_t unused;
-       unused = write(child_notifier, "", 1);
+       /*
+        * execvp failed.  If possible, we'd like to let start_command
+        * know, so failures like ENOENT can be handled right away; but
+        * otherwise, finish_command will still report the error.
+        */
+       xwrite(child_notifier, "", 1);
 }
 
 static NORETURN void die_child(const char *err, va_list params)
 {
        char msg[4096];
-       ssize_t unused;
        int len = vsnprintf(msg, sizeof(msg), err, params);
        if (len > sizeof(msg))
                len = sizeof(msg);
 
-       unused = write(child_err, "fatal: ", 7);
-       unused = write(child_err, msg, len);
-       unused = write(child_err, "\n", 1);
+       write_in_full(child_err, "fatal: ", 7);
+       write_in_full(child_err, msg, len);
+       write_in_full(child_err, "\n", 1);
        exit(128);
 }
 #endif
@@ -194,6 +197,7 @@ int start_command(struct child_process *cmd)
        }
 
        trace_argv_printf(cmd->argv, "trace: run_command:");
+       fflush(NULL);
 
 #ifndef WIN32
 {
@@ -201,7 +205,6 @@ int start_command(struct child_process *cmd)
        if (pipe(notify_pipe))
                notify_pipe[0] = notify_pipe[1] = -1;
 
-       fflush(NULL);
        cmd->pid = fork();
        if (!cmd->pid) {
                /*