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-rw-r--r--libguile/eval.c18
1 files changed, 8 insertions, 10 deletions
diff --git a/libguile/eval.c b/libguile/eval.c
index 735e6c0b3..09fa71df4 100644
--- a/libguile/eval.c
+++ b/libguile/eval.c
@@ -424,23 +424,22 @@ eval (SCM x, SCM env)
case SCM_M_CALL_WITH_PROMPT:
{
struct scm_vm *vp;
- SCM k, res;
+ SCM k, handler, res;
scm_i_jmp_buf registers;
- /* We need the handler after nonlocal return to the setjmp, so
- make sure it is volatile. */
- volatile SCM handler;
+ scm_t_ptrdiff saved_stack_depth;
k = EVAL1 (CAR (mx), env);
handler = EVAL1 (CDDR (mx), env);
vp = scm_the_vm ();
+ saved_stack_depth = vp->stack_top - vp->sp;
+
/* Push the prompt onto the dynamic stack. */
scm_dynstack_push_prompt (&SCM_I_CURRENT_THREAD->dynstack,
- SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY
- | SCM_F_DYNSTACK_PROMPT_PUSH_NARGS,
+ SCM_F_DYNSTACK_PROMPT_ESCAPE_ONLY,
k,
- vp->fp - vp->stack_base,
- vp->sp - vp->stack_base,
+ vp->stack_top - vp->fp,
+ saved_stack_depth,
vp->ip,
&registers);
@@ -449,8 +448,7 @@ eval (SCM x, SCM env)
/* The prompt exited nonlocally. */
scm_gc_after_nonlocal_exit ();
proc = handler;
- vp = scm_the_vm ();
- args = scm_i_prompt_pop_abort_args_x (vp);
+ args = scm_i_prompt_pop_abort_args_x (vp, saved_stack_depth);
goto apply_proc;
}