Re: scm_num2dbl with #f -> segfault

[Marius Vollmer]

Bill Schottstaedt <address@hidden> writes:

> On the Sun (Solaris 2.9), guile 1.6.0, scm_num2dbl segfaults if
> accidentally passed #f instead of a number.

I can't reproduce this on GNU/Linux i386.  Could you try to figure out
why it crashes exactly?

I tried this:

    #include <libguile.h>
    #include <stdio.h>

    SCM
    xxx (SCM x)
    {
      printf ("%g\n", scm_num2dbl (x, "xxx"));
      return SCM_UNSPECIFIED;
    }

    int main ()
    {
      scm_init_guile ();
      scm_c_define_gsubr ("xxx", 1, 0, 0, xxx);
      scm_shell (0, NULL);
    }

    $ gcc -o x x.c -lguile
    $ ./x
    guile> (xxx #f)
    <unnamed port>:3:1: In procedure xxx in expression (xxx #f):
    <unnamed port>:3:1: Wrong type argument: #f
    ABORT: (wrong-type-arg)

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