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allow `apply' on %nil-terminated lists

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* libguile/vm-engine.h (PUSH_LIST): Add a parameter to check that the
  list was proper.

* libguile/vm-i-system.c: Adapt PUSH_LIST callsites to pass SCM_NULLP or
  SCM_NULL_OR_NIL_P, as appropriate. Add a check to return/values*.

* libguile/vm.c: Add lang.h header for SCM_NULL_OR_NIL_P.

* test-suite/tests/elisp.test: Fix XFAIL for elisp + apply.
This commit is contained in:
Andy Wingo 2009-01-04 14:06:52 +01:00
parent b1b942b74c
commit fb10a0084e
4 changed files with 15 additions and 14 deletions
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16
libguile/vm-i-system.c
View file

@ -214,7 +214,7 @@ VM_DEFINE_INSTRUCTION (list_break, "list-break", 0, 0, 0)
{
SCM l;
POP (l);
PUSH_LIST (l);
PUSH_LIST (l, SCM_NULLP);
NEXT;
}
@ -784,7 +784,7 @@ VM_DEFINE_INSTRUCTION (goto_args, "goto/args", 1, -1, 1)
POP (values);
values = scm_struct_ref (values, SCM_INUM0);
nvalues = scm_ilength (values);
PUSH_LIST (values);
PUSH_LIST (values, SCM_NULLP);
goto vm_return_values;
}
goto vm_return;
@ -861,7 +861,7 @@ VM_DEFINE_INSTRUCTION (mv_call, "mv-call", 3, -1, 1)
POP (values);
values = scm_struct_ref (values, SCM_INUM0);
len = scm_length (values);
PUSH_LIST (values);
PUSH_LIST (values, SCM_NULLP);
PUSH (len);
ip += offset;
}
@ -893,7 +893,7 @@ VM_DEFINE_INSTRUCTION (apply, "apply", 1, -1, 1)
if (len < 0)
goto vm_error_wrong_type_arg;
PUSH_LIST (ls);
PUSH_LIST (ls, SCM_NULL_OR_NIL_P);
nargs += len - 2;
goto vm_call;
@ -912,7 +912,7 @@ VM_DEFINE_INSTRUCTION (goto_apply, "goto/apply", 1, -1, 1)
if (len < 0)
goto vm_error_wrong_type_arg;
PUSH_LIST (ls);
PUSH_LIST (ls, SCM_NULL_OR_NIL_P);
nargs += len - 2;
goto vm_goto_args;
@ -974,7 +974,7 @@ VM_DEFINE_INSTRUCTION (goto_cc, "goto/cc", 0, 1, 1)
SCM values;
values = scm_struct_ref (cont, SCM_INUM0);
nvalues = scm_ilength (values);
PUSH_LIST (values);
PUSH_LIST (values, SCM_NULLP);
goto vm_return_values;
}
else
@ -1097,6 +1097,10 @@ VM_DEFINE_INSTRUCTION (return_values_star, "return/values*", 1, -1, -1)
l = SCM_CDR (l);
nvalues++;
}
if (SCM_UNLIKELY (!SCM_NULL_OR_NIL_P (l))) {
err_args = scm_list_1 (l);
goto vm_error_improper_list;
}
goto vm_return_values;
}