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, 3 insertions, 4 deletions

diff --git a/mark_rts.c b/mark_rts.c
index 4cd97bdc..5afdab51 100644
--- a/mark_rts.c
+++ b/mark_rts.c
@@ -457,9 +457,8 @@ GC_API void GC_CALL GC_exclude_static_roots(void *b, void *e)
 }
 
 /* Invoke push_conditional on ranges that are not excluded. */
-/*ARGSUSED*/
 STATIC void GC_push_conditional_with_exclusions(ptr_t bottom, ptr_t top,
-                                                GC_bool all)
+                                                GC_bool all GC_ATTR_UNUSED)
 {
     struct exclusion * next;
     ptr_t excl_start;
@@ -623,8 +622,8 @@ STATIC void GC_push_all_stack_part_eager_sections(ptr_t lo, ptr_t hi,
  * seen.
  * FIXME: Merge with per-thread stuff.
  */
-/*ARGSUSED*/
-STATIC void GC_push_current_stack(ptr_t cold_gc_frame, void * context)
+STATIC void GC_push_current_stack(ptr_t cold_gc_frame,
+                                  void * context GC_ATTR_UNUSED)
 {
 #   if defined(THREADS)
         if (0 == cold_gc_frame) return;