Remove the uninitialized instance variable verbose mode warning

This speeds up all instance variable access, even when not in
verbose mode.  Uninitialized instance variable warnings were
rarely helpful, and resulted in slower code if you wanted to
avoid warnings when run in verbose mode.

Implements [Feature #17055]

1 files changed, 1 insertions, 9 deletions

diff --git a/variable.c b/variable.c
index 9f9813319e..81c0a7da2f 100644
--- a/variable.c
+++ b/variable.c
@@ -1217,14 +1217,8 @@ rb_ivar_lookup(VALUE obj, ID id, VALUE undef)
 VALUE
 rb_ivar_get(VALUE obj, ID id)
 {
-    VALUE iv = rb_ivar_lookup(obj, id, Qundef);
+    VALUE iv = rb_ivar_lookup(obj, id, Qnil);
     RB_DEBUG_COUNTER_INC(ivar_get_base);
-
-    if (iv == Qundef) {
-	if (RTEST(ruby_verbose))
-	    rb_warning("instance variable %"PRIsVALUE" not initialized", QUOTE_ID(id));
-	iv = Qnil;
-    }
     return iv;
 }
 
@@ -3526,8 +3520,6 @@ rb_iv_get(VALUE obj, const char *name)
     ID id = rb_check_id_cstr(name, strlen(name), rb_usascii_encoding());
 
     if (!id) {
-        if (RTEST(ruby_verbose))
-            rb_warning("instance variable %s not initialized", name);
         return Qnil;
     }
     return rb_ivar_get(obj, id);