Set the buffer of an fstream to empty when the underlying file is closed. This 'fixes' PR#38052 - std::fstream still good after closing and updating content.

llvm-svn: 350603

1 files changed, 1 insertions, 0 deletions

diff --git a/libcxx/include/fstream b/libcxx/include/fstream
index 332b4747c1a..711e484e2dc 100644
--- a/libcxx/include/fstream
+++ b/libcxx/include/fstream
@@ -702,6 +702,7 @@ basic_filebuf<_CharT, _Traits>::close()
             __file_ = 0;
         else
             __rt = 0;
+        setbuf(0, 0);
     }
     return __rt;
 }