bin/44220: Huge value crashes ``date -r''

[nakayosh%leto.eonet.ne.jp@localhost]

>Number:         44220
>Category:       bin
>Synopsis:       Huge value crashes ``date -r''
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    bin-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Dec 11 16:20:06 +0000 2010
>Originator:     NAKAJIMA Yoshihiro
>Release:        NetBSD-current/20101210
>Organization:
>Environment:
System: NetBSD asura 5.99.41 NetBSD 5.99.41 (ASURA) #4: Fri Dec 10 22:46:15 JST 
2010 nakayosh@asura:/usr/src/sys/arch/amd64/compile/ASURA amd64
Architecture: x86_64
Machine: amd64
>Description:
        Huge value crashes ``date -r'', because 64bit time_t makes
        tm_year overflow.

>How-To-Repeat:
: % date -r 0x00f0c29d868c0000
: Segmentation fault (core dumped)

>Fix:
        Check the return value of localtime().
        In addtion, an error hander after strtoll() is expected.