Merge commit 'origin/master' into vm

[bpt/guile.git] / libguile / debug.c

diff --git a/libguile/debug.c b/libguile/debug.c
index 7b91cd3..4de7024 100644 (file)
--- a/libguile/debug.c
+++ b/libguile/debug.c
@@ -72,7 +72,9 @@ SCM_DEFINE (scm_debug_options, "debug-options-interface", 0, 1, 0,
       SCM_OUT_OF_RANGE (1, setting);
     }
   SCM_RESET_DEBUG_MODE;
+#ifdef STACK_CHECKING
   scm_stack_checking_enabled_p = SCM_STACK_CHECKING_P;
+#endif
   scm_debug_eframe_size = 2 * SCM_N_FRAMES;
 
   scm_dynwind_end ();
@@ -446,8 +448,10 @@ scm_reverse_lookup (SCM env, SCM data)
   return SCM_BOOL_F;
 }
 
-SCM
-scm_start_stack (SCM id, SCM exp, SCM env)
+SCM_DEFINE (scm_sys_start_stack, "%start-stack", 2, 0, 0,
+            (SCM id, SCM thunk),
+           "Call @var{thunk} on an evaluator stack tagged with @var{id}.")
+#define FUNC_NAME s_scm_sys_start_stack
 {
   SCM answer;
   scm_t_debug_frame vframe;
@@ -457,27 +461,12 @@ scm_start_stack (SCM id, SCM exp, SCM env)
   vframe.vect = &vframe_vect_body;
   vframe.vect[0].id = id;
   scm_i_set_last_debug_frame (&vframe);
-  answer = scm_i_eval (exp, env);
+  answer = scm_call_0 (thunk);
   scm_i_set_last_debug_frame (vframe.prev);
   return answer;
 }
-
-SCM_SYNTAX(s_start_stack, "start-stack", scm_makacro, scm_m_start_stack);
-
-static SCM
-scm_m_start_stack (SCM exp, SCM env)
-#define FUNC_NAME s_start_stack
-{
-  exp = SCM_CDR (exp);
-  if (!scm_is_pair (exp) 
-      || !scm_is_pair (SCM_CDR (exp))
-      || !scm_is_null (SCM_CDDR (exp)))
-    SCM_WRONG_NUM_ARGS ();
-  return scm_start_stack (scm_eval_car (exp, env), SCM_CADR (exp), env);
-}
 #undef FUNC_NAME
 
-
 /* {Debug Objects}
  *
  * The debugging evaluator throws these on frame traps.