libstdc++/8399: sync_with_stdio(false) breaks unformatted input

[Paolo Carlini]

The following reply was made to PR libstdc++/8399; it has been noted by GNATS.

From: Paolo Carlini <pcarlini@unitus.it>
To: gcc-gnats@gcc.gnu.org,  gcc-prs@gcc.gnu.org, 
 marc-oliver.gewaltig@hre-ftr.f.rd.honda.co.jp,  gcc-bugs@gcc.gnu.org, 
 nobody@gcc.gnu.org
Cc: bkoz <bkoz@redhat.com>
Subject: Re: libstdc++/8399: sync_with_stdio(false) breaks unformatted input
Date: Sun, 10 Nov 2002 19:46:41 +0100

 Hi,
 
 this is a reduced testcase:
 
 ////
 #include <iostream>
 using namespace std;
 
 int main()
 {
    ios::sync_with_stdio(false);
 
    char c;
 
    cin.get(c);
    cout.put(c);
 
    return 0;
 }
 ////
 
 What happens with current mainline is that a <newline>
 doesn't end the get, whereas this happens with the 'sync'.
 
 Therefore, the issue seems more than vaguely related to
 the obnoxious libstdc++/6745 and all that...
 
 Ciao, Paolo.
 
 
 http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=8399