bin/181153: sscanf doesn't skip whitespace properly

[Garrett Cooper]

>Number:         181153
>Category:       bin
>Synopsis:       sscanf doesn't skip whitespace properly
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Aug 09 00:30:00 UTC 2013
>Closed-Date:
>Last-Modified:
>Originator:     Garrett Cooper
>Release:        10-CURRENT
>Organization:
EMC Isilon
>Environment:
FreeBSD fuji-current.local 10.0-CURRENT FreeBSD 10.0-CURRENT #10 c9d2bd6-dirty: Wed Aug  7 18:55:03 PDT 2013     root at fuji-current.local:/usr/obj/usr/src/sys/FUJI-NOCOMPAT  i386
>Description:
The following test failure occurred:

    sscanf_whitespace: [0.001968s] Failed: /usr/src/lib/libc/tests/stdio/t_scanf.c:71: c == 'z' not met

The corresponding test code of interest is as follows:

ATF_TC(sscanf_whitespace);
ATF_TC_HEAD(sscanf_whitespace, tc)
{

        atf_tc_set_md_var(tc, "descr", "verify sscanf skips all whitespace");
}

ATF_TC_BODY(sscanf_whitespace, tc)
{
        const char str[] = "\f\n\r\t\v%z";
        char c;

        /* set of "white space" symbols from isspace(3) */
        c = 0;
        (void)sscanf(str, "%%%c", &c);
        ATF_REQUIRE(c == 'z');
}
>How-To-Repeat:

>Fix:


>Release-Note:
>Audit-Trail:
>Unformatted: