1 files changed, 5 insertions, 2 deletions
diff --git a/load.c b/load.c
index 88e31e26f8..7778d4f87c 100644
--- a/load.c
+++ b/load.c
@@ -720,6 +720,8 @@ rb_f_load(int argc, VALUE *argv)
     return Qtrue;
 }
 
+extern VALUE rb_mWarning;
+
 static char *
 load_lock(const char *ftptr)
 {
@@ -742,8 +744,9 @@ load_lock(const char *ftptr)
 	return (char *)"";
     }
     if (RTEST(ruby_verbose)) {
-	rb_warning("loading in progress, circular require considered harmful - %s", ftptr);
-	rb_backtrace_print_to(rb_stderr);
+	VALUE warning = rb_warning_string("loading in progress, circular require considered harmful - %s", ftptr);
+	rb_backtrace_each(rb_str_append, warning);
+	rb_warning_warn(rb_mWarning, warning);
     }
     switch (rb_thread_shield_wait((VALUE)data)) {
       case Qfalse: