* strftime.c (STRFTIME): return 0 and ERANGE when precision is too

large. [ruby-dev:43284] fixes #4456
  based on r31011.

* test/test_time.rb (TestTime#test_huge_precision): test for #4456.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_9_2@31770 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,11 @@
+Sat May 14 12:20:22 2011  Yuki Sonoda (Yugui)  <yugui@yugui.jp>
+
+	* strftime.c (STRFTIME):  return 0 and ERANGE when precision is too
+	  large. [ruby-dev:43284] fixes #4456
+	  based on r31011.
+
+	* test/test_time.rb (TestTime#test_huge_precision): test for #4456.
+
 Sat Feb 26 07:10:05 2011  Aaron Patterson <aaron@tenderlovemaking.com>
 
 	* ext/psych/lib/psych/scalar_scanner.rb: fix parsing timezone's whose

strftime.c

@@ -309,6 +309,7 @@ rb_strftime_with_timespec(char *s, size_t maxsize, const char *format, const str
 			i = rb_strftime_with_timespec(s, endp - s, fmt, vtm, timev, ts, gmt); \
 			if (!i) return 0; \
 			if (precision > i) {\
+				NEEDS(precision); \
 				memmove(s + precision - i, s, i);\
 				memset(s, padding ? padding : ' ', precision - i); \
 				s += precision;	\

test/test_time.rb

@@ -1,5 +1,6 @@
 require 'time'
 require 'test/unit'
+require_relative 'ruby/envutil.rb'
 
 class TestTimeExtension < Test::Unit::TestCase # :nodoc:
   def test_rfc822
@@ -397,4 +398,9 @@ class TestTimeExtension < Test::Unit::TestCase # :nodoc:
     assert_equal(123456789, Time.xmlschema("2000-01-01T00:00:00.123456789+00:00").tv_nsec)
     assert_equal(123456789, Time.parse("2000-01-01T00:00:00.123456789+00:00").tv_nsec)
   end
+
+  def test_huge_precision
+    bug4456 = '[ruby-dev:43284]'
+    assert_normal_exit %q{ Time.now.strftime("%1000000000F") }, bug4456
+  end
 end

version.h

@@ -1,5 +1,5 @@
 #define RUBY_VERSION "1.9.2"
-#define RUBY_PATCHLEVEL 208
+#define RUBY_PATCHLEVEL 209
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 9
 #define RUBY_VERSION_TEENY 1