Ruby parse string backtrace

gistfile1.txt

(gdb) bt
#0  str_new (klass=4303856320, ptr=0x100680500 "The Ruby core team is playing a joke on us!", len=43) at string.c:389
#1  0x00000001001179f8 in rb_str_new [inlined] () at /Users/pat/.rvm/src/ruby-1.9.3-preview1/string.c:416
#2  0x00000001001179f8 in rb_enc_str_new (ptr=<value temporarily unavailable, due to optimizations>, len=<value temporarily unavailable, due to optimizations>, enc=0x1004027e0) at string.c:430
#3  0x000000010009f725 in parser_str_new (p=<value temporarily unavailable, due to optimizations>, n=<value temporarily unavailable, due to optimizations>, enc=0x1004027e0, func=2, enc0=0x1004027e0) at parse.y:5401
#4  0x00000001000aa677 in parser_parse_string (parser=0x10060e000, quote=0x1010793e0) at parse.y:6033
#5  0x00000001000ab285 in parser_yylex (parser=0x10060e000) at parse.y:6645
#6  0x00000001000b4999 in ruby_yyparse (parser=<value temporarily unavailable, due to optimizations>) at parse.y:7922
#7  0x00000001000c24bf in yycompile0 (arg=<value temporarily unavailable, due to optimizations>, tracing=<value temporarily unavailable, due to optimizations>) at parse.y:5215
#8  0x000000010018bd53 in thread_suppress_tracing (th=0x100401b30, ev=<value temporarily unavailable, due to optimizations>, func=0x1000c2400 <yycompile0>, arg=4301316096, always=<value temporarily unavailable, due to optimizations>) at thread.c:4521
#9  0x00000001000a0220 in rb_parser_compile_file (vparser=4303769200, f=0x100868350 "sunday.rb", file=4312241320, start=1) at parse.y:5241
#10 0x0000000100105b8c in load_file_internal (arg=<value temporarily unavailable, due to optimizations>) at ruby.c:1630
#11 0x000000010004324f in rb_ensure (b_proc=0x100105aa0 <load_file_internal>, data1=140734799801632, e_proc=0x100103690 <restore_lineno>, data2=1) at eval.c:736
#12 0x0000000100106974 in load_file [inlined] () at /Users/pat/.rvm/src/ruby-1.9.3-preview1/ruby.c:1667
#13 0x0000000100106974 in ruby_process_options (argc=2, argv=0x7fff5fbff2d0) at ruby.c:1404
#14 0x0000000100045ca6 in ruby_options (argc=2, argv=0x7fff5fbff2d0) at eval.c:73
#15 0x0000000100000ed7 in main (argc=2, argv=0x7fff5fbff2d0) at main.c:38