Have basic_istream seekg, putback and unget first clear eofbit. Fixes http://llvm.org/bugs/show_bug.cgi?id=13089. git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@162608 91177308-0d34-0410-b5e6-96231b3b80d8 
diff --git a/include/istream b/include/istream index 7312425..b48f856 100644 --- a/include/istream +++ b/include/istream 
@@ -1263,6 +1263,7 @@  try  {  #endif // _LIBCPP_NO_EXCEPTIONS + this->clear(this->rdstate() & ~ios_base::eofbit);  sentry __sen(*this, true);  if (__sen)  { @@ -1290,6 +1291,7 @@  try  {  #endif // _LIBCPP_NO_EXCEPTIONS + this->clear(this->rdstate() & ~ios_base::eofbit);  sentry __sen(*this, true);  if (__sen)  { @@ -1368,6 +1370,7 @@  try  {  #endif // _LIBCPP_NO_EXCEPTIONS + this->clear(this->rdstate() & ~ios_base::eofbit);  sentry __sen(*this, true);  if (__sen)  if (this->rdbuf()->pubseekpos(__pos, ios_base::in) == pos_type(-1))