PR libstdc++/26211 + N3168
* include/bits/istream.tcc (basic_istream<>::tellg, seekg(pos_type),
seekg(off_type, ios_base::seekdir)): Construct a sentry.
- (basic_istream<>::tellg, seekg(pos_type), seekg(off_type,
- ios_base::seekdir, putback, unget)): Clear eofbit first, per N3168.
+ (basic_istream<>::seekg(pos_type), seekg(off_type, ios_base::seekdir)
+ putback, unget): Clear eofbit first, per N3168.
* testsuite/27_io/basic_istream/seekg/char/26211.cc: New.
* testsuite/27_io/basic_istream/seekg/wchar_t/26211.cc: Likewise.
* testsuite/27_io/basic_istream/tellg/char/26211.cc: Likewise.