Segfault in mrb_class

[tongson]

VERSION AFFECTED: mruby 1.1.0

TESTCASE:

super def bar
end

BACKTRACE:

#0  0x0000000000416886 in mrb_class (mrb=0x6a2010, v=...) at /root/mruby-1.1.0/include/mruby/class.h:47
#1  0x000000000041aa5a in mrb_respond_to (mrb=0x6a2010, obj=..., mid=140) at /root/mruby-1.1.0/src/class.c:1367
#2  0x000000000041d3e2 in convert_type (mrb=0x6a2010, val=..., tname=0x462f8c "String", method=0x462f85 "to_str", raise=0 '\000')
    at /root/mruby-1.1.0/src/object.c:310
#3  0x000000000041d69b in mrb_check_convert_type (mrb=0x6a2010, val=..., type=MRB_TT_STRING, tname=0x462f8c "String",
    method=0x462f85 "to_str") at /root/mruby-1.1.0/src/object.c:352
#4  0x0000000000406b52 in mrb_check_string_type (mrb=0x6a2010, str=...) at /root/mruby-1.1.0/src/string.c:1494
#5  0x0000000000416063 in join_ary (mrb=0x6a2010, ary=..., sep=..., list=...) at /root/mruby-1.1.0/src/array.c:996
#6  0x00000000004161ae in mrb_ary_join (mrb=0x6a2010, ary=..., sep=...) at /root/mruby-1.1.0/src/array.c:1020
#7  0x0000000000425662 in mrb_vformat (mrb=0x6a2010, format=0x464436 "undefined method '%S' for %S", ap=0x7fffffffd9d8)
    at /root/mruby-1.1.0/src/error.c:264
#8  0x000000000042611f in mrb_no_method_error (mrb=0x6a2010, id=0, argc=1, argv=0x6b4360, fmt=0x464436 "undefined method '%S' for %S")
    at /root/mruby-1.1.0/src/error.c:433
#9  0x000000000041a995 in mrb_bob_missing (mrb=0x6a2010, mod=...) at /root/mruby-1.1.0/src/class.c:1335
#10 0x000000000040dfcc in mrb_context_run (mrb=0x6a2010, proc=0x6a9fc0, self=..., stack_keep=0) at /root/mruby-1.1.0/src/vm.c:1254
#11 0x000000000041324b in mrb_toplevel_run_keep (mrb=0x6a2010, proc=0x6a9fc0, stack_keep=0) at /root/mruby-1.1.0/src/vm.c:2386
#12 0x000000000044c3dd in load_exec (mrb=0x6a2010, p=0x6fbbe0, c=0x6be9a0) at src/parse.y:5599
#13 0x000000000044c473 in mrb_load_file_cxt (mrb=0x6a2010, f=0x6dd7f0, c=0x6be9a0) at src/parse.y:5608
#14 0x00000000004024b9 in main (argc=2, argv=0x7fffffffe468) at /root/mruby-1.1.0/mrbgems/mruby-bin-mruby/tools/mruby/mruby.c:225