gc.c: ruby_sized_xrealloc2

* gc.c (ruby_sized_xrealloc2): reallocate from old size.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@44117 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 11 insertions, 2 deletions

diff --git a/gc.c b/gc.c
index bef72b0ece..081f997e45 100644
--- a/gc.c
+++ b/gc.c
@@ -6122,14 +6122,23 @@ ruby_xrealloc(void *ptr, size_t new_size)
     return ruby_sized_xrealloc(ptr, new_size, 0);
 }
 
+#ifdef ruby_sized_xrealloc2
+#undef ruby_sized_xrealloc2
+#endif
 void *
-ruby_xrealloc2(void *ptr, size_t n, size_t size)
+ruby_sized_xrealloc2(void *ptr, size_t n, size_t size, size_t old_n)
 {
     size_t len = size * n;
     if (n != 0 && size != len / n) {
 	rb_raise(rb_eArgError, "realloc: possible integer overflow");
     }
-    return ruby_xrealloc(ptr, len);
+    return objspace_xrealloc(&rb_objspace, ptr, len, old_n * size);
+}
+
+void *
+ruby_xrealloc2(void *ptr, size_t n, size_t size)
+{
+    return ruby_sized_xrealloc2(ptr, n, size, 0);
 }
 
 #ifdef ruby_sized_xfree