libstdc++/9657: [3.2/3.3/3.4 regression] Incorrect parsing when using istringstream::str

[paolo@gcc.gnu.org]

Synopsis: [3.2/3.3/3.4 regression] Incorrect parsing when using istringstream::str

Responsible-Changed-From-To: unassigned->paolo
Responsible-Changed-By: paolo
Responsible-Changed-When: Tue Feb 18 10:01:34 2003
Responsible-Changed-Why:
    Analyzed.
State-Changed-From-To: analyzed->closed
State-Changed-By: paolo
State-Changed-When: Tue Feb 18 10:01:34 2003
State-Changed-Why:
    Not a bug, but behaviour mandated by the standard, now
    implemented correctly. After the first extraction iss.good()
    is false and iss.eof() is true since the end of the string
    is reached during the extraction. Therefore istream::sentry
    blocks the second extraction. User code can be fixed either
    initializing the first time with "1 " (space after 1), or
    clearing the stream state before the second extraction
    (iss.clear()). Thanks for your report, Paolo.
    
    P.S. In fact we _test_ in the testsuite for this behaviour,
    in istringstream_members.cc

http://gcc.gnu.org/cgi-bin/gnatsweb.pl?cmd=view%20audit-trail&database=gcc&pr=9657