Ticket #8309: indirect_streambuf.hpp.patch

indirect_streambuf.hpp

@@ -395 +395 @@
             setp(out().begin(), out().end());
         else {
             const char_type* ptr = pptr();
-            setp(out().begin() + amt, out().end());
+            setp(pbase() + amt, out().end());
             pbump(ptr - pptr());
         }
     }