Index: range_adapter.hpp
===================================================================
--- range_adapter.hpp	(revision 80898)
+++ range_adapter.hpp	(working copy)
@@ -107,7 +107,7 @@
         (Iter& cur, Iter& last, Ch* s,std::streamsize n)
     {
         std::streamsize rem = n; // No. of chars remaining.
-        while (cur != last && rem-- > 0) *s++ = *cur++;
+        while (cur != last && rem > 0) { --rem; *s++ = *cur++; }
         return n - rem != 0 ? n - rem : -1;
     }