vm.c: constify

* vm.c (vm_make_env_each): constify pointer arguments.
  (collect_local_variables_in_iseq): ditto.
  (collect_local_variables_in_env): ditto.
  (vm_collect_local_variables_in_heap): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@46647 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 6 insertions, 7 deletions

diff --git a/vm.c b/vm.c
index 8eb02f3d84..a84320b4e3 100644
--- a/vm.c
+++ b/vm.c
@@ -453,8 +453,8 @@ check_env_value(VALUE envval)
 }
 
 static VALUE
-vm_make_env_each(rb_thread_t * const th, rb_control_frame_t * const cfp,
-		 VALUE *envptr, VALUE * const endptr)
+vm_make_env_each(const rb_thread_t *const th, rb_control_frame_t *const cfp,
+		 VALUE *envptr, const VALUE *const endptr)
 {
     VALUE envval, penvval = 0;
     rb_env_t *env;
@@ -532,7 +532,7 @@ vm_make_env_each(rb_thread_t * const th, rb_control_frame_t * const cfp,
 }
 
 static int
-collect_local_variables_in_iseq(rb_iseq_t *iseq, const struct local_var_list *vars)
+collect_local_variables_in_iseq(const rb_iseq_t *iseq, const struct local_var_list *vars)
 {
     int i;
     if (!iseq) return 0;
@@ -542,19 +542,18 @@ collect_local_variables_in_iseq(rb_iseq_t *iseq, const struct local_var_list *va
     return 1;
 }
 
-static int
-collect_local_variables_in_env(rb_env_t *env, const struct local_var_list *vars)
+static void
+collect_local_variables_in_env(const rb_env_t *env, const struct local_var_list *vars)
 {
 
     while (collect_local_variables_in_iseq(env->block.iseq, vars),
 	   env->prev_envval) {
 	GetEnvPtr(env->prev_envval, env);
     }
-    return 0;
 }
 
 static int
-vm_collect_local_variables_in_heap(rb_thread_t *th, VALUE *ep, const struct local_var_list *vars)
+vm_collect_local_variables_in_heap(rb_thread_t *th, const VALUE *ep, const struct local_var_list *vars)
 {
     if (ENV_IN_HEAP_P(th, ep)) {
 	rb_env_t *env;