[hurd, commited] hurd: Fix spawni SPAWN_XFLAGS_TRY_SHELL with empty argv

[Samuel Thibault]

When argv is empty, we need to add the original script to be run on the
shell command line.
---
 sysdeps/mach/hurd/spawni.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/sysdeps/mach/hurd/spawni.c b/sysdeps/mach/hurd/spawni.c
index 2aeed683fe..b511265044 100644
--- a/sysdeps/mach/hurd/spawni.c
+++ b/sysdeps/mach/hurd/spawni.c
@@ -842,7 +842,11 @@ __spawni (pid_t *pid, const char *file,
       {
        /* The file is accessible but it is not an executable file.
           Invoke the shell to interpret it as a script.  */
-       err = __argz_insert (&args, &argslen, args, _PATH_BSHELL);
+       err = 0;
+       if (!argslen)
+         err = __argz_insert (&args, &argslen, args, relpath);
+       if (!err)
+         err = __argz_insert (&args, &argslen, args, _PATH_BSHELL);
        if (!err)
          err = child_lookup (_PATH_BSHELL, O_EXEC, 0, &execfile);
        if (!err)
-- 
2.29.2