* bignum.c (big2str_karatsuba): free internal buffer eagerly.

a patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com>
  in [ruby-dev:36217].

* bignum.c (rb_big2str0): ditto.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@19414 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -3,6 +3,14 @@ Thu Sep 18 20:02:48 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 	* lib/uri/common.rb (unescape): skip '%' to make String#hex work
 	  correctly.
 
+Thu Sep 18 19:51:11 2008  Yukihiro Matsumoto  <matz@ruby-lang.org>
+
+	* bignum.c (big2str_karatsuba): free internal buffer eagerly.
+	  a patch from TOYOFUKU Chikanobu <nobu_toyofuku at nifty.com>
+	  in [ruby-dev:36217].
+
+	* bignum.c (rb_big2str0): ditto.
+
 Thu Sep 18 19:43:04 2008  Yusuke Endoh  <mame@tsg.ne.jp>
 
 	* st.c (new_size): raise RuntimeError when st_table is too big.

bignum.c

@@ -909,8 +909,10 @@ big2str_karatsuba(VALUE x, int base, char* ptr,
     bigdivmod(x, b, &q, &r);
     lh = big2str_karatsuba(q, base, ptr, (len - m1)/2,
 			   len - m1, hbase, trim);
+    rb_big_resize(q, 0);
     ll = big2str_karatsuba(r, base, ptr + lh, m1/2,
 			   m1, hbase, !lh && trim);
+    rb_big_resize(r, 0);
 
     return lh + ll;
 }
@@ -953,6 +955,7 @@ rb_big2str0(VALUE x, int base, int trim)
 	len = off + big2str_karatsuba(xx, base, ptr + off, n1,
 				      n2, hbase, trim);
     }
+    rb_big_resize(xx, 0);
 
     ptr[len] = '\0';
     rb_str_resize(ss, len);