diff options
| author | Benjamin Kosnik <bkoz@redhat.com> | 2002-11-11 23:18:05 +0000 |
|---|---|---|
| committer | Benjamin Kosnik <bkoz@gcc.gnu.org> | 2002-11-11 23:18:05 +0000 |
| commit | 6eeb7d7ae07a0534f9bf07f0bb146d941f4b0731 (patch) | |
| tree | b453888a589082dd78db7efe37b82197810bdf37 /libstdc++-v3/include/bits | |
| parent | 90e76e864a228ac5cb306aa33f5716913fab061a (diff) | |
| download | gcc-6eeb7d7ae07a0534f9bf07f0bb146d941f4b0731.tar.gz | |
re PR libstdc++/6746 (ifstream::readsome() always returns zero)
2002-11-11 Benjamin Kosnik <bkoz@redhat.com>
PR libstdc++/6746
* include/bits/fstream.tcc (filebuf::open): Set input pointers.
* config/io/basic_file_stdio.cc (__basic_file::_M_open_mode): Set
__p_mode as well.
(__basic_file::open): Set to non-block for input.
* testsuite/27_io/istream_unformatted.cc (test12): Add.
(test13): Same.
From-SVN: r59030
Diffstat (limited to 'libstdc++-v3/include/bits')
| -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; } } |