[Bug libc/713] New: fgets() should only return zero upon error or EOF

[Bug libc/713] New: fgets() should only return zero upon error or EOF

[bww at acm dot org]

/*
 * fgets() should only return zero upon error or EOF
 * (and not having enough space to store all available
 * input is not an error).
 *
 * For example under Fedora Core release 3 ...
 *    % gcc -static c.c -o c
 *    % echo | ./c
 *    ERROR
 *
 * whereas under Solaris 5.8 ...
 *    % gcc -static c.c -o c
 *    % echo | ./c
 *    OK
 */

#include <stdio.h>

int
main()
{
    char buf[1];
    char *bp;

    bp = fgets(buf, sizeof buf, stdin);
    printf("%s\n", (bp == buf) ? "OK" : "ERROR");
    return 0;
}

-- 
           Summary: fgets() should only return zero upon error or EOF
           Product: glibc
           Version: 2.3.4
            Status: NEW
          Severity: normal
          Priority: P2
         Component: libc
        AssignedTo: gotom at debian dot or dot jp
        ReportedBy: bww at acm dot org
                CC: glibc-bugs at sources dot redhat dot com


http://sources.redhat.com/bugzilla/show_bug.cgi?id=713

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[Bug libc/713] fgets() should only return zero upon error or EOF

[ballen at gravity dot phys dot uwm dot edu]

------- Additional Comments From ballen at gravity dot phys dot uwm dot edu  2005-03-02 17:59 -------
I am seeing some odd behavior on FC3 that might be related.  I have a cgi program, which uses fgets() 
to read from stdin.  In this case, stdin is a pipe to Apache, which is connected to a socket from the 
remote machine.  fgets() is NOT returning (it hangs), but when I call feof(stdin) I get EOF.

Bruce Allen

-- 


http://sources.redhat.com/bugzilla/show_bug.cgi?id=713

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[Bug libc/713] fgets() should only return zero upon error or EOF

[drepper at redhat dot com]

------- Additional Comments From drepper at redhat dot com  2005-09-27 00:00 -------
This is just a problem for the special case n==1 which does not do any reading
at all.  Fixed in CVS trunk.

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED


http://sourceware.org/bugzilla/show_bug.cgi?id=713

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