merges r20742 from trunk into ruby_1_9_1.

* vm.c (vm_backtrace): defaults to script name for C functions.

git-svn-id: http://svn.ruby-lang.org/repos/ruby/branches/ruby_1_9_1@20809 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 5 insertions, 1 deletions

diff --git a/ChangeLog b/ChangeLog
index 01217b24b..ec0138528 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Mon Dec 15 11:35:27 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* vm.c (vm_backtrace): defaults to script name for C functions.
+
 Mon Dec 15 11:32:18 2008  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* ruby.c (rubylib_mangled_path, rubylib_mangled_path2): cannot use
diff --git a/vm.c b/vm.c
index 6c06a21c0..f91f3586e 100644
--- a/vm.c
+++ b/vm.c
@@ -704,7 +704,7 @@ vm_backtrace(rb_thread_t *th, int lev)
     }
 
     ary = vm_backtrace_each(th, RUBY_VM_NEXT_CONTROL_FRAME(cfp),
-			    top_of_cfp, "", 0, ary);
+			    top_of_cfp, RSTRING_PTR(th->vm->progname), 0, ary);
     return ary;
 }