bin/181152: %i fails with negative hex numbers with sscanf
Garrett Cooper
yaneurabeya at gmail.com
Fri Aug 9 00:20:00 UTC 2013
>Number: 181152
>Category: bin
>Synopsis: %i fails with negative hex numbers with sscanf
>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 00:20:00 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:
Looks like FreeBSD has lib/21691:
sscanf_neghex: [0.001912s] Failed: /usr/src/lib/libc/tests/stdio/t_scanf.c:50: i == NUM not met
The snippet of test code that exhibits this is:
#define NUM -0x1234
#define STRNUM __STRING(NUM)
ATF_TC(sscanf_neghex);
ATF_TC_HEAD(sscanf_neghex, tc)
{
atf_tc_set_md_var(tc, "descr",
"PR lib/21691: %%i and %%x fail with negative hex numbers");
}
ATF_TC_BODY(sscanf_neghex, tc)
{
int i;
sscanf(STRNUM, "%i", &i);
ATF_REQUIRE(i == NUM);
sscanf(STRNUM, "%x", &i);
ATF_REQUIRE(i == NUM);
}
>How-To-Repeat:
>Fix:
>Release-Note:
>Audit-Trail:
>Unformatted:
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