Re: Again on Windows support (2)

["carlo\.bramix" <carlo.bramix@libero.it>]

Hello,
this is the command that I gave me some results:

$ ./pre-inst-guile-env ./libtool --mode=execute gdb --args libguile/guile.exe -c '(display "foo")'

As you can see I added "--args" option to GDB.
Without "--args" option, GDB says:

C:\msys\1.0\home\Carlo\guile/(display "foo"): Invalid argument.
argc=1
argv[0]=C:/msys/1.0/home/Carlo/guile/libguile/.libs/guile.exe

With "--args" option I had this:

argc=4
argv[0]=C:/msys/1.0/home/Carlo/guile/libguile/.libs/guile.exe
argv[1]=-c
argv[2]=\(display\
argv[3]="foo"\)

Since I had no idea about those unknown '\' characters, I added some debug prints before scm_boot_guile():

int
main (int argc, char **argv)
{
int x;
printf("argc=%d\n",argc);
for (x=0; x<argc; x++)
printf("argv[%d]=%s\n",x,argv[x]);

scm_boot_guile (argc, argv, inner_main, 0);
return 0; /* never reached */
}

Then I launched libguile/guile.exe normally and I got this:

argc=4
argv[0]=C:/msys/1.0/home/Carlo/guile/libguile/.libs/guile.exe
argv[1]=-c
argv[2]=(display
argv[3]=foo)

In this case, no more '/' but the '"' characters around the "foo" word are disappeared.
Anyways, I seems that the parameter has been split in two...

Sincerely,

Carlo Bramini.

---------- Initial Header -----------

From      : "Neil Jerram" neil@ossau.uklinux.net
To          : "carlo.bramix" carlo.bramix@libero.it
Cc          : "guile-devel" guile-devel@gnu.org
Date      : Wed, 17 Jun 2009 22:09:08 +0100
Subject : Re: Again on Windows support (2)

> Neil Jerram <neil@ossau.uklinux.net> writes:
>
> > "carlo.bramix" <carlo.bramix@libero.it> writes:
> >
> >> $ ./pre-inst-guile -c '(display "foo")'
> >> Backtrace:
> >> In unknown file:
> >>    ?: 0* (begin (eval-string "(display") (quit))
> >>    ?: 1* [eval-string "(display"]
> >
> > That is weird.
> >
> > Can we first rule out a problem with your shell?  What output do you
> > get from this?
> >
> > $ set - '(display "foo")' && echo "--${1}--" && echo "--${2}--"
>
> Assuming that that gives the expected output, i.e.
>
> --(display "foo")--
> ----
>
> my next suggestion would be to run under GDB, with a breakpoint on
> scm_shell().  The invocation for doing that is
>
> ./pre-inst-guile-env ./libtool --mode=execute gdb libguile/guile -c '(display "foo")'
>
> In scm_shell, I would expect:
> argc to be 3
> argv[1] to be "-c"
> argv[2] to be "(display \"foo\")"
> scm_get_meta_args () to return 0
> and hence not to execute the "if (new_argv)" block of code.
>
> Can you check those points?
>
> Regards,
>         Neil
>