[Ecls-list] build lisp array in C

Eric Schulte schulte.eric at gmail.com
Thu Jun 30 22:18:58 UTC 2011


While I'm generally having success using lisp objects from within C, I
am unable to successfully create a lisp array from a list of C ints.
For example the following throws invalid memory access errors [1] on the
first call to si_aset...

  int i, length;
  length = 5;
  int c_bytes[5];
  for (i=0; i<length; i++){
    c_bytes[i] = i;
  cl_object bytes = cl_make_array(1, MAKE_FIXNUM(5));
  for (i=0; i<length; i++) {
    printf("%d ", i);
    si_aset(3, bytes, fix(i), fix(c_bytes[i]));

Am I doing anything obviously wrong, or is there a better way?  I found
nothing on the wiki [2], but when I find a working solution I'll be sure
to post it there.

Thanks -- Eric

[1]  specifically
| Detected access to an invalid or protected memory address.

[2]  http://ecls.wikispaces.com/C+and+lisp+conversion+functions

Eric Schulte

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