Replace ARGSUSED comment-based annotation with GCC 'unused' attribute.

Turn on unused-parameter checking for GCC.

* alloc.c (GC_try_to_collect_general): Add GC_ATTR_UNUSED attribute
to an argument.
* tests/test.c (tiny_reverse_test, thr_run_one_test): Likewise.
* backgraph.c (reset_back_edge, update_max_height): Replace ARGSUSED
annotation with GC_ATTR_UNUSED attribute for some arguments.
* checksums.c (GC_add_block): Likewise.
* dbg_mlc.c (GC_debug_change_stubborn, GC_debug_end_stubborn_change,
GC_check_heap_block): Likewise.
* finalize.c (GC_null_finalize_mark_proc): Likewise.
* gcj_mlc.c (GC_gcj_fake_mark_proc): Likewise.
* mark.c (GC_noop, clear_marks_for_block, GC_mark_and_push): Likewise.
* mark_rts.c (GC_push_conditional_with_exclusions,
GC_push_current_stack): Likewise.
* misc.c (GC_default_oom_fn, GC_do_blocking_inner): Likewise.
* os_dep.c (GC_fault_handler_openbsd, GC_fault_handler,
GC_remove_protection, GC_page_was_dirty, GC_page_was_ever_dirty):
Likewise.
* pthread_stop_world.c (GC_suspend_handler, GC_suspend_handler_inner):
Likewise.
* pthread_support.c (GC_do_blocking_inner): Likewise.
* stubborn.c (GC_change_stubborn, GC_end_stubborn_change): Likewise.
* tests/test.c (fail_proc1): Likewise.
* typd_mlc.c (GC_array_mark_proc): Likewise.
* win32_threads.c (GC_do_blocking_inner, DllMain): Likewise.
* include/private/gc_priv.h (GC_ATTR_UNUSED): Define new macro.
* cordxtra.c (CORD_ATTR_UNUSED): Likewise.
* cordxtra.c (CORD_nul_func, CORD_lf_close_proc): Replace ARGSUSED
annotation with CORD_ATTR_UNUSED attribute for an argument.
* mach_dep.c (GC_clear_stack_inner): Remove ARGSUSED annotation and
use "limit" argument in the function (to suppress compiler warning).
* misc.c (GC_clear_stack_inner): Remove ARGSUSED.
* tests/threadkey_test.c (on_thread_exit_inner, on_thread_exit):
Use all function arguments (to suppress compiler warning).
* configure.ac (CFLAGS): Remove "-Wno-unused-parameter" option.

1 files changed, 4 insertions, 5 deletions

diff --git a/gcj_mlc.c b/gcj_mlc.c
index 3467a396..7b189b5f 100644
--- a/gcj_mlc.c
+++ b/gcj_mlc.c
@@ -56,11 +56,10 @@ GC_INNER ptr_t * GC_gcjobjfreelist = NULL;
 
 STATIC ptr_t * GC_gcjdebugobjfreelist = NULL;
 
-/*ARGSUSED*/
-STATIC struct GC_ms_entry * GC_gcj_fake_mark_proc(word * addr,
-                                        struct GC_ms_entry *mark_stack_ptr,
-                                        struct GC_ms_entry *mark_stack_limit,
-                                        word env)
+STATIC struct GC_ms_entry * GC_gcj_fake_mark_proc(word * addr GC_ATTR_UNUSED,
+                        struct GC_ms_entry *mark_stack_ptr,
+                        struct GC_ms_entry * mark_stack_limit GC_ATTR_UNUSED,
+                        word env GC_ATTR_UNUSED)
 {
     ABORT("No client gcj mark proc is specified");
     return mark_stack_ptr;