load.c: display backtrace to $stderr

* load.c (load_lock): display backtrace to $stderr at circular
  require.
* vm_backtrace.c (rb_backtrace_print_to): new function to print
  backtrace to the given output.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@43204 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 2 deletions

diff --git a/load.c b/load.c
index 03ce062f14..c5dd4e7e75 100644
--- a/load.c
+++ b/load.c
@@ -706,8 +706,7 @@ load_lock(const char *ftptr)
     }
     if (RTEST(ruby_verbose)) {
 	rb_warning("loading in progress, circular require considered harmful - %s", ftptr);
-	/* TODO: display to $stderr, not stderr in C */
-	rb_backtrace();
+	rb_backtrace_print_to(rb_stderr);
     }
     switch (rb_thread_shield_wait((VALUE)data)) {
       case Qfalse: