libstdc++/2634: istrstream state not correct upon failed conversion

[dirk dot steenpass at pharma dot novartis dot com]

>Number:         2634
>Category:       libstdc++
>Synopsis:       istrstream state not correct upon failed conversion
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Apr 25 05:06:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     Dirk Steenpass
>Release:        GNU CPP version 2.95.3 20010315 (release) (i386 Linux/ELF)
>Organization:
>Environment:
(i386 Linux/ELF) i686-pc-linux-gnu
gcc was build with --enable-shared --enable-threads
>Description:
The state of an istrstream is not set to fail() or bad()
if the conversion from string to double fails. This is true
only for strings starting with an ('i' || 'I') or a 
('n' || 'N').
Try out the stupid test prog, it's self explanatory.
>How-To-Repeat:
The test prog tries to convert all command line arguments
to double.
Use for example:
>Fix:
???
>Release-Note:
>Audit-Trail:
>Unformatted:
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