drop-in type check for rb_define_singleton_method

We can check the function pointer passed to
rb_define_singleton_method like how we do so in rb_define_method.
Doing so revealed many arity mismatches.

1 files changed, 8 insertions, 2 deletions

diff --git a/vm.c b/vm.c
index 2097dde434..157a43967e 100644
--- a/vm.c
+++ b/vm.c
@@ -2827,7 +2827,7 @@ core_hash_merge_kwd(VALUE hash, VALUE kw)
 
 /* Returns true if JIT is enabled */
 static VALUE
-mjit_enabled_p(void)
+mjit_enabled_p(VALUE _)
 {
     return mjit_enabled ? Qtrue : Qfalse;
 }
@@ -2849,6 +2849,12 @@ mjit_pause_m(int argc, VALUE *argv, RB_UNUSED_VAR(VALUE self))
     return mjit_pause(RTEST(wait));
 }
 
+static VALUE
+mjit_resume_m(VALUE _)
+{
+    return mjit_resume();
+}
+
 extern VALUE *rb_gc_stack_start;
 extern size_t rb_gc_stack_maxsize;
 
@@ -2974,7 +2980,7 @@ Init_VM(void)
     mjit = rb_define_module_under(rb_cRubyVM, "MJIT");
     rb_define_singleton_method(mjit, "enabled?", mjit_enabled_p, 0);
     rb_define_singleton_method(mjit, "pause", mjit_pause_m, -1);
-    rb_define_singleton_method(mjit, "resume", mjit_resume, 0);
+    rb_define_singleton_method(mjit, "resume", mjit_resume_m, 0);
 
     /*
      * Document-class: Thread