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-rw-r--r--libguile/gc.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/libguile/gc.c b/libguile/gc.c
index 96e3c306f..a0715f084 100644
--- a/libguile/gc.c
+++ b/libguile/gc.c
@@ -820,8 +820,7 @@ scm_init_gc ()
scm_after_gc_hook = scm_permanent_object (scm_make_hook (SCM_INUM0));
scm_c_define ("after-gc-hook", scm_after_gc_hook);
- gc_async = scm_c_make_subr ("%gc-thunk", scm_tc7_subr_0,
- gc_async_thunk);
+ gc_async = scm_c_make_gsubr ("%gc-thunk", 0, 0, 0, gc_async_thunk);
scm_c_hook_add (&scm_after_gc_c_hook, mark_gc_async, NULL, 0);