You need to run "make bootstrap" to avoid having part of the definition
compiled against the stale definition of lambda.cmi. (I just checked that
it works on your change: after a bootrsap, "make world", "make opt", "make
opt.opt" work.)

On Sat, Aug 8, 2015 at 5:50 AM, Bob Zhang <bobzhang1988@gmail.com> wrote:

>
> Dear caml develpers,
>
>    I am working on an experimental branch to pass more information from
> typedtree to lambda to enable ocaml generate user readable javascript code(
> https://github.com/bobzhang/ocaml/tree/master) (online-demo:
> http://zhanghongbo.me/js-demo/)
>
>    Here I get a segfault, after I change const_block:
>    Below is my minimal change:
>
> ```
> type pointer_info =
>   | NullConstructor of string
>   | NullVariant of string
>   | NAPointer
>
> type tag_info =
>   | Constructor of string
>   | Tuple
>   | Variant of string
>   | Record
>   | NA
>
> type structured_constant =
>     Const_base of constant
>   | Const_pointer of int * pointer_info
>   | Const_block of int * tag_info * structured_constant list
>   | Const_float_array of string list
>   | Const_immstring of string
> ```
> Note that the enriched info is not used in ``emitcode``, now I get a
> segfault in make world:
>
> ```
> ../../boot/ocamlrun ../../ocamlc -nostdlib -I ../../stdlib -c -w +33..39
> -warn-error A -bin-annot -g -safe-string -I ../../stdlib -I ../../utils -I
> ../../typing -I ../../bytecomp -I ../../asmcomp extract_crc.ml
> ../../boot/ocamlrun ../../ocamlc -nostdlib -I ../../stdlib -o extract_crc
> dynlink.cma extract_crc.cmo
> make[3]: *** [extract_crc] Segmentation fault: 11
> make[3]: *** Deleting file `extract_crc'
> make[2]: *** [otherlibraries] Error 2
> make[1]: *** [all] Error 2
> ```
>
> Any help is appreciated : )
>
> --
> Regards
> -- Hongbo Zhang
>