libstdc++/82: problem opening a stream in binary mode

[wappenschmidt at digital-security dot com]

>Number:         82
>Category:       libstdc++
>Synopsis:       problem opening a stream in binary mode
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Mon Aug 21 09:27:00 PDT 2000
>Closed-Date:
>Last-Modified:
>Originator:     Armin Wappenschmidt
>Release:        libstdc++.so.2.10.0
>Organization:
>Environment:
gcc 2.95.2 on linux and solaris
>Description:
Opening a stream in binary mode doesn't work in this way:
    ifstream in("binary.dat", ios::binary);
You can't read any values with ifstream::get().

Opening the binary with
    ifstream in("binary.dat", ios::in|ios::binary);
does work correctly.

A similiar problems occurs while writing to a binary
stream. You have also to open it with "ios::out|ios::binary".


>How-To-Repeat:

>Fix:
Instead of
    ifstream in ("binary.dat", ios::binary);
    ofstream out("binary.dat", ios::binary);
use
    ifstream in ("binary.dat", ios::in |ios::binary);
    ofstream out("binary.dat", ios::out|ios::binary);

>Release-Note:
>Audit-Trail:
>Unformatted:
----gnatsweb-attachment----
Content-Type: application/x-unknown-content-type-cppfile; name="tt.cpp"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="tt.cpp"

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