diff options
Diffstat (limited to 'libstdc++-v3/include/bits/fstream.tcc')
| -rw-r--r-- | libstdc++-v3/include/bits/fstream.tcc | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/libstdc++-v3/include/bits/fstream.tcc b/libstdc++-v3/include/bits/fstream.tcc index 66cb9a1b179..387f099ae98 100644 --- a/libstdc++-v3/include/bits/fstream.tcc +++ b/libstdc++-v3/include/bits/fstream.tcc @@ -90,11 +90,21 @@ namespace std { _M_allocate_internal_buffer(); _M_mode = __mode; + + // Setup initial position of buffer. _M_set_indeterminate(); + // Set input buffer to something real. + // NB: Must open in non-blocking way to do this, or must + // set the initial position in a different manner than + // using underflow. + if (__mode & ios_base::in && _M_buf_allocated) + this->underflow(); + if ((__mode & ios_base::ate) && this->seekoff(0, ios_base::end, __mode) < 0) this->close(); + __ret = this; } } |