* enum.c (enum_min, enum_max): do not ignore nil as the first element.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8@8665 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

2 files changed, 10 insertions, 6 deletions

diff --git a/ChangeLog b/ChangeLog
index 2d94df3eba..12293db362 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,7 @@
+Sat Jun 25 15:49:18 2005  Nobuyoshi Nakada  <nobu@ruby-lang.org>
+
+	* enum.c (enum_min, enum_max): do not ignore nil as the first element.
+
 Sat Jun 25 14:40:17 2005  Hirokazu Yamamoto  <ocean@m2.ccsnet.ne.jp>
 
 	* ext/sdbm/init.c (fsdbm_select): SDBM#select had returned the array
diff --git a/enum.c b/enum.c
index ca52b6f566..102257fa76 100644
--- a/enum.c
+++ b/enum.c
@@ -607,7 +607,7 @@ min_i(i, memo)
 {
     VALUE cmp;
 
-    if (NIL_P(*memo)) {
+    if (*memo == Qundef) {
 	*memo = i;
     }
     else {
@@ -626,7 +626,7 @@ min_ii(i, memo)
 {
     VALUE cmp;
 
-    if (NIL_P(*memo)) {
+    if (*memo == Qundef) {
 	*memo = i;
     }
     else {
@@ -657,7 +657,7 @@ static VALUE
 enum_min(obj)
     VALUE obj;
 {
-    VALUE result = Qnil;
+    VALUE result = Qundef;
 
     rb_iterate(rb_each, obj, rb_block_given_p() ? min_ii : min_i, (VALUE)&result);
     return result;
@@ -684,7 +684,7 @@ max_i(i, memo)
 {
     VALUE cmp;
 
-    if (NIL_P(*memo)) {
+    if (*memo == Qundef) {
 	*memo = i;
     }
     else {
@@ -703,7 +703,7 @@ max_ii(i, memo)
 {
     VALUE cmp;
 
-    if (NIL_P(*memo)) {
+    if (*memo == Qundef) {
 	*memo = i;
     }
     else {
@@ -733,7 +733,7 @@ static VALUE
 enum_max(obj)
     VALUE obj;
 {
-    VALUE result = Qnil;
+    VALUE result = Qundef;
 
     rb_iterate(rb_each, obj, rb_block_given_p() ? max_ii : max_i, (VALUE)&result);
     return result;