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diff --git a/include/c++/stl/stl/_alloc.c b/include/c++/stl/stl/_alloc.c
new file mode 100644
index 0000000..ad6656c
--- /dev/null
+++ b/include/c++/stl/stl/_alloc.c
@@ -0,0 +1,88 @@
+/*
+ *
+ * Copyright (c) 1996,1997
+ * Silicon Graphics Computer Systems, Inc.
+ *
+ * Copyright (c) 1997
+ * Moscow Center for SPARC Technology
+ *
+ * Copyright (c) 1999
+ * Boris Fomitchev
+ *
+ * This material is provided "as is", with absolutely no warranty expressed
+ * or implied. Any use is at your own risk.
+ *
+ * Permission to use or copy this software for any purpose is hereby granted
+ * without fee, provided the above notices are retained on all copies.
+ * Permission to modify the code and to distribute modified code is granted,
+ * provided the above notices are retained, and a notice that the code was
+ * modified is included with the above copyright notice.
+ *
+ */
+#ifndef _STLP_ALLOC_C
+#define _STLP_ALLOC_C
+
+#ifndef _STLP_INTERNAL_ALLOC_H
+#  include <stl/_alloc.h>
+#endif
+
+#if defined (__WATCOMC__)
+#  pragma warning 13 9
+#  pragma warning 367 9
+#  pragma warning 368 9
+#endif
+
+_STLP_BEGIN_NAMESPACE
+
+template <class _Alloc>
+void * _STLP_CALL __debug_alloc<_Alloc>::allocate(size_t __n) {
+  size_t __total_extra = __extra_before_chunk() + __extra_after_chunk();
+  size_t __real_n = __n + __total_extra;
+  if (__real_n < __n) {
+    //It means that we rolled on size_t, __n must be very large, lets hope
+    //that allocating it will raised a bad_alloc exception:
+    __real_n = __n + (__total_extra - __real_n - 1);
+  }
+  __alloc_header *__result = (__alloc_header *)__allocator_type::allocate(__real_n);
+  memset((char*)__result, __shred_byte, __real_n * sizeof(value_type));
+  __result->__magic = __magic;
+  __result->__type_size = sizeof(value_type);
+  __result->_M_size = (_STLP_UINT32_T)__n;
+  return ((char*)__result) + (long)__extra_before;
+}
+
+template <class _Alloc>
+void  _STLP_CALL
+__debug_alloc<_Alloc>::deallocate(void *__p, size_t __n) {
+  __alloc_header * __real_p = (__alloc_header*)((char *)__p -(long)__extra_before);
+  // check integrity
+  _STLP_VERBOSE_ASSERT(__real_p->__magic != __deleted_magic, _StlMsg_DBA_DELETED_TWICE)
+  _STLP_VERBOSE_ASSERT(__real_p->__magic == __magic, _StlMsg_DBA_NEVER_ALLOCATED)
+  _STLP_VERBOSE_ASSERT(__real_p->__type_size == 1,_StlMsg_DBA_TYPE_MISMATCH)
+  _STLP_VERBOSE_ASSERT(__real_p->_M_size == __n, _StlMsg_DBA_SIZE_MISMATCH)
+  // check pads on both sides
+  unsigned char* __tmp;
+  for (__tmp = (unsigned char*)(__real_p + 1); __tmp < (unsigned char*)__p; ++__tmp) {
+    _STLP_VERBOSE_ASSERT(*__tmp == __shred_byte, _StlMsg_DBA_UNDERRUN)
+  }
+
+  size_t __real_n = __n + __extra_before_chunk() + __extra_after_chunk();
+
+  for (__tmp= ((unsigned char*)__p) + __n * sizeof(value_type);
+       __tmp < ((unsigned char*)__real_p) + __real_n ; ++__tmp) {
+    _STLP_VERBOSE_ASSERT(*__tmp == __shred_byte, _StlMsg_DBA_OVERRUN)
+  }
+
+  // that may be unfortunate, just in case
+  __real_p->__magic = __deleted_magic;
+  memset((char*)__p, __shred_byte, __n * sizeof(value_type));
+  __allocator_type::deallocate(__real_p, __real_n);
+}
+
+_STLP_END_NAMESPACE
+
+#endif /*  _STLP_ALLOC_C */
+
+// Local Variables:
+// mode:C++
+// End: