Fix gcc warning

* libfshelp/fshelp.h (fshelp_set_options): Make `argp` pointer const.
* libfshelp/set-options.c (fshelp_set_options): Likewise.
* doc/hurd.texi (fshelp_set_options): Likewise.

3 files changed, 3 insertions, 3 deletions

diff --git a/doc/hurd.texi b/doc/hurd.texi
index dbd5b451..ae478688 100644
--- a/doc/hurd.texi
+++ b/doc/hurd.texi
@@ -2619,7 +2619,7 @@ an RPC.  If @var{len} is greater than zero, @var{buf} is freed,
 regardless of whether an error is returned or not.
 @end deftypefun
 
-@deftypefun error_t fshelp_set_options (@w{struct argp *@var{argp}}, @w{int @var{flags}}, @w{char *@var{argz}}, @w{size_t @var{argz_len}}, @w{void *@var{input}})
+@deftypefun error_t fshelp_set_options (@w{const struct argp *@var{argp}}, @w{int @var{flags}}, @w{char *@var{argz}}, @w{size_t @var{argz_len}}, @w{void *@var{input}})
 Invoke @code{argp_parse} in the standard way, with data from @var{argz}
 and @var{argz_len}.
 @end deftypefun
diff --git a/libfshelp/fshelp.h b/libfshelp/fshelp.h
index 43fbcd78..a7702ca2 100644
--- a/libfshelp/fshelp.h
+++ b/libfshelp/fshelp.h
@@ -258,7 +258,7 @@ fshelp_exec_reauth (int suid, uid_t uid, int sgid, gid_t gid,
 struct argp;			/* Include <argp.h> to get the real thing.  */
 
 /* Invoke ARGP with data from DATA & LEN, in the standard way.  */
-error_t fshelp_set_options (struct argp *argp, int flags,
+error_t fshelp_set_options (const struct argp *argp, int flags,
 			    const char *argz, size_t argz_len, void *input);
 
 
diff --git a/libfshelp/set-options.c b/libfshelp/set-options.c
index 77cdba15..a627b841 100644
--- a/libfshelp/set-options.c
+++ b/libfshelp/set-options.c
@@ -32,7 +32,7 @@
 
 /* Invoke ARGP with data from DATA & LEN, in the standard way.  */
 error_t
-fshelp_set_options (struct argp *argp, int flags,
+fshelp_set_options (const struct argp *argp, int flags,
 		    const char *argz, size_t argz_len, void *input)
 {
   int argc = argz_count (argz, argz_len);