From mboxrd@z Thu Jan 1 00:00:00 1970 X-Msuck: nntp://news.gmane.org/gmane.linux.lib.musl.general/7471 Path: news.gmane.org!not-for-mail From: Jean-Marc Pigeon Newsgroups: gmane.linux.lib.musl.general Subject: setenv if value=NULL, what say standard? Bug? Date: Wed, 22 Apr 2015 20:08:17 -0400 Message-ID: <553837F1.5080808@safe.ca> Reply-To: musl@lists.openwall.com NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms000305050204050008000208" X-Trace: ger.gmane.org 1429747735 17472 80.91.229.3 (23 Apr 2015 00:08:55 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 23 Apr 2015 00:08:55 +0000 (UTC) To: musl@lists.openwall.com Original-X-From: musl-return-7484-gllmg-musl=m.gmane.org@lists.openwall.com Thu Apr 23 02:08:43 2015 Return-path: Envelope-to: gllmg-musl@m.gmane.org Original-Received: from mother.openwall.net ([195.42.179.200]) by plane.gmane.org with smtp (Exim 4.69) (envelope-from ) id 1Yl4h9-0006sw-3G for gllmg-musl@m.gmane.org; Thu, 23 Apr 2015 02:08:43 +0200 Original-Received: (qmail 25665 invoked by uid 550); 23 Apr 2015 00:08:41 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Original-Received: (qmail 25604 invoked from network); 23 Apr 2015 00:08:35 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.8.0 X-Enigmail-Version: 1.6 X-Clement-Version: 2.6-6.7 X-Clement-ID: <00717-20150422200817-a3b86328> X-Clement-Virus-checker: ClamAV 0.98.4/20358/Wed Apr 22 01:07:33 2015 Xref: news.gmane.org gmane.linux.lib.musl.general:7471 Archived-At: This is a cryptographically signed message in MIME format. --------------ms000305050204050008000208 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hello, hwclock (util-linux-2.26) is crashing, this is caused by setenv. #0 mktime_tz (tm=3D..., universal=3D1, valid_p=3D0x7fffffffea4c, systime_p=3D0x7fffffffea30) at sys-utils/hwclock.c:411 #1 0x00000000004025f6 in read_hardware_clock (universal=3D1, valid_p=3D0x7fffffffea4c, systime_p=3D0x7fffffffea30) at sys-utils/hwclock.c:476 #2 0x0000000000403bae in manipulate_clock (show=3D1, adjust=3D0, noadjfile=3D0, set=3D0, set_time=3D0, hctosys=3D0, systohc=3D0, systz=3D0, startup_time=3D..., utc=3D0, local_opt=3D0, update=3D0, testing=3D0, predict=3D0, get=3D0) at sys-utils/hwclock.c:1336 #3 0x0000000000404b37 in main (argc=3D0, argv=3D0x7fffffffebe8) at sys-utils/hwclock.c:1965 src: hwclock.c:411 setenv("TZ", getenv("TZUTC"), TRUE); as TZUTC is undefined (NULL), setenv is crashing setenv.c:30 l2 =3D strlen(value); fixing the hwclock code is a possibility, but we could have other same-kind situation far less obvious in other application, making all sort of code to crash "randomly". Tried to see what was saying standard, about (const char *value) to be NULL when calling setenv(const char *name, const char *value, int overwrite); found nothing. My guess, glibc code is 'blindly" setting the NULL (as "") value to the variable. Is the standard saying otherwise, or do we have a a real bug in setenv?? - --=20 A bient=F4t =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D Jean-Marc Pigeon E-Mail: jmp@safe.ca SAFE Inc. Phone: (514) 493-4280 Clement, 'a kiss solution' to get rid of SPAM (at last) Clement' Home base <"http://www.clement.safe.ca"> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.14 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iQIcBAEBAgAGBQJVODfxAAoJEAtgwJ4bBQU5Aj4QAIvcx2qmpFwJEYfF4CzL2c/M mAYTToDCGmyQcsLg0ZNTn/jfIFDuJ4wlY5piNgY/uFOg+3MwddEs1QhZhjZt9jeW 50cDffYYF18EMBuCC6D7gF1kIsMUmGUavvJbQCq3fTfhhIHTQoScDm9fM8EcU0jl wywmos8XYgGRgIxOGKCkqmqG6luAjvZQcjsubG+CPb5aGRJndljCwZAIL1fXwjiL QBjD1Ww2KTXlUM0bduIbYKPTVO/cTM3y+RqiN5BtQG7G1ipMBbDiyHlY5RqV3mZ7 07vcXwwC5G+DLOtGe7ZXQLIt7SgGR24rsXMT0O+kyRqkCXJ0KJBf78ezC05hQwvr H+V7kSaDHMcfBc85cCf5I1iOdST+2dx5S7VZ+O7/0DPudCda6DcezWgVCxr6zfbw Ow1GH/QjcmLGf73lXez1ccSKNeP5FOJxgFoKKDaO5iYxG7iEig2LKLEvK4uMATLv 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