Re: [Caml-list] Re: exception error trace back in ocaml
On 21-06-2010, lin hong lh...@amnh.org wrote: I have problem getting a full traceback of some exception error. The traceback looks like this: Fatal error: exception Invalid_argument(index out of bounds) Raised at file camlinternalLazy.ml, line 33, characters 10-11 Called from file list.ml, line 74, characters 24-34 But that's all I got, both camlinternalLazy.ml and list.ml are ocaml source code, I still don't know which part of my code trigger it. Also, in camlinternalLazy.ml line 33, there is a try with e - raise e, is this the reason I don't have a full traceback -- Maybe something else catch the raise e ? Any idea? To get the full trace, you need to compile your code with -g, i.e. ocamlc -g foo.ml If you don't have this debug flag, you won't see calls from the code you compiled. Thank you for your reply. I believe the -g flag is being used during compile though, for I can get full traceback with other exception error in the code. This is the first and only exception error without the full trace. The try ... with e - raise e just re-raise the exception and you will be able to see it in the full trace. Regards, Sylvain Le Gall ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
Re: [Caml-list] Re: exception error trace back in ocaml
On 21-06-2010, lin hong lh...@amnh.org wrote: I have problem getting a full traceback of some exception error. The traceback looks like this: Fatal error: exception Invalid_argument(index out of bounds) Raised at file camlinternalLazy.ml, line 33, characters 10-11 Called from file list.ml, line 74, characters 24-34 But that's all I got, both camlinternalLazy.ml and list.ml are ocaml source code, I still don't know which part of my code trigger it. Also, in camlinternalLazy.ml line 33, there is a try with e - raise e, is this the reason I don't have a full traceback -- Maybe something else catch the raise e ? Any idea? That exception was raised when forcing a lazy value (Lazy.force catches it and re-raises it). So you'll need to wrap the expression following the lazy keyword with a handler for Invalid_argument, and you might be able to use Printexc.print_backtrace from there. But I don't know why the standard backtrace printer can't see into the closure being forced. -- Eric Cooper e c c @ c m u . e d u ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
[Caml-list] Re: exception error trace back in ocaml
On 21-06-2010, lin hong lh...@amnh.org wrote: I have problem getting a full traceback of some exception error. The traceback looks like this: Fatal error: exception Invalid_argument(index out of bounds) Raised at file camlinternalLazy.ml, line 33, characters 10-11 Called from file list.ml, line 74, characters 24-34 But that's all I got, both camlinternalLazy.ml and list.ml are ocaml source code, I still don't know which part of my code trigger it. Also, in camlinternalLazy.ml line 33, there is a try with e - raise e, is this the reason I don't have a full traceback -- Maybe something else catch the raise e ? Any idea? To get the full trace, you need to compile your code with -g, i.e. ocamlc -g foo.ml If you don't have this debug flag, you won't see calls from the code you compiled. The try ... with e - raise e just re-raise the exception and you will be able to see it in the full trace. Regards, Sylvain Le Gall ___ Caml-list mailing list. Subscription management: http://yquem.inria.fr/cgi-bin/mailman/listinfo/caml-list Archives: http://caml.inria.fr Beginner's list: http://groups.yahoo.com/group/ocaml_beginners Bug reports: http://caml.inria.fr/bin/caml-bugs
