libstdc++/4083: input stream with field width() set reads too much to std::string

[david at hedbor dot org]

>Number:         4083
>Category:       libstdc++
>Synopsis:       input stream with field width()  set reads too much to std::string
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Wed Aug 22 12:26:00 PDT 2001
>Closed-Date:
>Last-Modified:
>Originator:     David Hedbor
>Release:        3.0.1
>Organization:
>Environment:
Mandrake Cooker linux install, glibc 2.2.3
>Description:
When I set the width of an input stream and when use operator >> to an std::string, one byte too many is read. I.e
"ifs.width(8); ifs >> str;" reads 8 bytes if str is an std::string but 7 bytes if it's a char *. gcc 2.96 (mandrake) and egcs-2.91.66 do now show this problem.
>How-To-Repeat:
Compile and run the attached program.
>Fix:
Unknown. A workaround is to use a temporary char * for reading into.
>Release-Note:
>Audit-Trail:
>Unformatted:
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