diff options
Diffstat (limited to 'libstdc++-v3/include/bits/basic_ios.h')
| -rw-r--r-- | libstdc++-v3/include/bits/basic_ios.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/libstdc++-v3/include/bits/basic_ios.h b/libstdc++-v3/include/bits/basic_ios.h index f91719582f1..dea2fdb3857 100644 --- a/libstdc++-v3/include/bits/basic_ios.h +++ b/libstdc++-v3/include/bits/basic_ios.h @@ -64,7 +64,8 @@ namespace std // Data members: protected: basic_ostream<_CharT, _Traits>* _M_tie; - char_type _M_fill; + mutable char_type _M_fill; + mutable bool _M_fill_init; iostate _M_exception; basic_streambuf<_CharT, _Traits>* _M_streambuf; @@ -160,7 +161,14 @@ namespace std char_type fill() const - { return _M_fill; } + { + if (!_M_fill_init) + { + _M_fill = this->widen(' '); + _M_fill_init = true; + } + return _M_fill; + } char_type fill(char_type __ch) |