* array.c (rb_ary_choice): should return nil when the array is

empty.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@12276 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Mon May 14 01:54:15 2007  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* array.c (rb_ary_choice): should return nil when the array is
+	  empty.
+
 Sat May 12 18:26:36 2007  Minero Aoki  <aamine@loveruby.net>
 
 	* lib/net/http.rb (tokens): forgot to add strip. [ruby-core:11120]

array.c

@@ -2952,9 +2952,11 @@ rb_ary_shuffle(VALUE ary)
 static VALUE
 rb_ary_choice(VALUE ary)
 {
-    long i = RARRAY_LEN(ary);
-    long j = genrand_real()*i;
+    long i, j;
 
+    i = RARRAY_LEN(ary);
+    if (i == 0) return Qnil;
+    j = genrand_real()*i;
     return RARRAY_PTR(ary)[j];
 }
 

version.h

@@ -1,7 +1,7 @@
 #define RUBY_VERSION "1.9.0"
-#define RUBY_RELEASE_DATE "2007-05-12"
+#define RUBY_RELEASE_DATE "2007-05-14"
 #define RUBY_VERSION_CODE 190
-#define RUBY_RELEASE_CODE 20070512
+#define RUBY_RELEASE_CODE 20070514
 #define RUBY_PATCHLEVEL 0
 
 #define RUBY_VERSION_MAJOR 1
@@ -9,7 +9,7 @@
 #define RUBY_VERSION_TEENY 0
 #define RUBY_RELEASE_YEAR 2007
 #define RUBY_RELEASE_MONTH 5
-#define RUBY_RELEASE_DAY 12
+#define RUBY_RELEASE_DAY 14
 
 #ifdef RUBY_EXTERN
 RUBY_EXTERN const char ruby_version[];