warning cleanup: missing member initializers.

This is the sixth round of an effort to enable GCC's -Wextra
option. Warnings about uninitialized members are addressed.

I am not happy with what had to be done in linenoise.c.
We just need a dummy circular list node for the lino_list,
which we achieved with a dummy all zero struture, with
statially initialized next and prev pointers. There are way
too many members to initialize, including one that has struct
termios type containing a nonportable set of members.
On the plus size, the lino_list structure now moves into the
BSS section, reducing the executable size slightly.

* lib.c (cptr_ops): Initialize using cobj_ops_init, which has
all the initializers already, and should have been used for
this in the first place.

* linenoise/linenoise.c (lino_list): Remove initializer,
which eliminates the warning about some members not being
initialized.
(lino_init): Initialize the next and prev pointers here.

* parser.c (parser_ops): Initialize with cobj_ops_init.

* stream.h (stdio_mode_init_blank, stdio_mode_init_r,
stdio_mode_init_rpb): Add initializer corresponding to redir
array member of struct stdio_mode.

* sysif.c (cptr_dl_ops): Use cobj_ops_init.

* tree.c (tree_iter_init): Add initializer for the path
array member of struct tree_iter.
(tr_rebuild): Initialize all fields of the dummy object.
Since it's a union, we just have to deal with the any
member. There are two layouts for the obj_common fields
based on whether CONFIG_GEN_GC is enabled. This is ugly, but
occurs in one place only.

1 files changed, 2 insertions, 1 deletions

diff --git a/linenoise/linenoise.c b/linenoise/linenoise.c
index 83a08ec7..75721075 100644
--- a/linenoise/linenoise.c
+++ b/linenoise/linenoise.c
@@ -159,7 +159,7 @@ enum key_action {
 };
 
 static lino_os_t lino_os;
-static lino_t lino_list = { &lino_list, &lino_list };
+static lino_t lino_list;
 volatile sig_atomic_t lino_list_busy;
 static int atexit_registered = 0; /* Register atexit just 1 time. */
 
@@ -2840,4 +2840,5 @@ void lino_set_result(lino_t *ls, wchar_t *res)
 void lino_init(lino_os_t *os)
 {
     lino_os = *os;
+    lino_list.next = lino_list.prev = &lino_list;
 }