shyouhei	2008-06-15 19:55:07 +0900 (Sun, 15 Jun 2008)

  New Revision: 17198

  Modified files:
    branches/ruby_1_8_6/ChangeLog
    branches/ruby_1_8_6/bignum.c
    branches/ruby_1_8_6/test/ruby/test_bignum.rb
    branches/ruby_1_8_6/version.h

  Log:
    merge revision(s) 15645:15647:
    * bignum.c (big2str_find_n1): check integer overflow.


  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_6/ChangeLog?r1=17198&r2=17197&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_6/version.h?r1=17198&r2=17197&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_6/test/ruby/test_bignum.rb?r1=17198&r2=17197&diff_format=u
  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi/branches/ruby_1_8_6/bignum.c?r1=17198&r2=17197&diff_format=u

Index: ruby_1_8_6/ChangeLog
===================================================================
--- ruby_1_8_6/ChangeLog	(revision 17197)
+++ ruby_1_8_6/ChangeLog	(revision 17198)
@@ -1,3 +1,7 @@
+Sun Jun 15 19:54:21 2008  Nobuyoshi Nakada  <nobu@r...>
+
+	* bignum.c (big2str_find_n1): check integer overflow.
+
 Sun Jun 15 19:52:20 2008  Tanaka Akira  <akr@f...>
 
 	* gc.c (STACK_LENGTH) [SPARC] : 0x80 offset removed.  [ruby-dev:33857]
Index: ruby_1_8_6/version.h
===================================================================
--- ruby_1_8_6/version.h	(revision 17197)
+++ ruby_1_8_6/version.h	(revision 17198)
@@ -2,7 +2,7 @@
 #define RUBY_RELEASE_DATE "2008-06-15"
 #define RUBY_VERSION_CODE 186
 #define RUBY_RELEASE_CODE 20080615
-#define RUBY_PATCHLEVEL 183
+#define RUBY_PATCHLEVEL 184
 
 #define RUBY_VERSION_MAJOR 1
 #define RUBY_VERSION_MINOR 8
Index: ruby_1_8_6/bignum.c
===================================================================
--- ruby_1_8_6/bignum.c	(revision 17197)
+++ ruby_1_8_6/bignum.c	(revision 17198)
@@ -652,6 +652,9 @@
     if (BIGZEROP(x)) {
 	return rb_str_new2("0");
     }
+    if (i >= LONG_MAX/SIZEOF_BDIGITS/CHAR_BIT) {
+	rb_raise(rb_eRangeError, "bignum too big to convert into `string'");
+    }
     j = SIZEOF_BDIGITS*CHAR_BIT*i;
     switch (base) {
       case 2: break;
Index: ruby_1_8_6/test/ruby/test_bignum.rb
===================================================================
--- ruby_1_8_6/test/ruby/test_bignum.rb	(revision 17197)
+++ ruby_1_8_6/test/ruby/test_bignum.rb	(revision 17198)
@@ -84,4 +84,12 @@
     shift_test(-4518325415524767873)
     shift_test(-0xfffffffffffffffff)
   end
+
+  def test_too_big_to_s
+    if (big = 2**31-1).is_a?(Fixnum)
+      return
+    end
+    e = assert_raise(RangeError) {(1 << big).to_s}
+    assert_match(/too big to convert/, e.message)
+  end
 end

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