Date: Fri, 30 Jul 2004 06:14:02 GMT From: Takayuki Sakuma <takayuki@finet.fujitsu.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/69788: The processing result of strtoul() cannot judge whether it is an error. Message-ID: <200407300614.i6U6E2Ps087850@www.freebsd.org> Resent-Message-ID: <200407300620.i6U6KCAM091280@freefall.freebsd.org>
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>Number: 69788 >Category: misc >Synopsis: The processing result of strtoul() cannot judge whether it is an error. >Confidential: no >Severity: serious >Priority: medium >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Jul 30 06:20:12 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Takayuki Sakuma >Release: 4.10-RELEASE >Organization: >Environment: FreeBSD moon.finet.fujitsu.co.jp 4.10-RELEASE FreeBSD 4.10-RELEASE #0: Tue Jul 6 12:59:40 JST 2004 root@moon.finet.fujitsu.co.jp:/usr/src/sys/compile/withDVD i386 >Description: The processing result of strtoul() cannot judge whether it is an error when errno has already set to ERANGE before calling this function. >How-To-Repeat: void main(void) { unsigned long ul; char *p; ul = strtoul("4294967296", &p, 10); printf("ul=%lu,*p=%x,errno=%d(%s)\n", ul, *p, errno, strerror(errno)); ul = strtoul("4294967295", &p, 10); printf("ul=%lu,*p=%x,errno=%d(%s)\n", ul, *p, errno, strerror(errno)); errno=0; ul = strtoul("4294967295", &p, 10); printf("ul=%lu,*p=%x,errno=%d(%s)\n", ul, *p, errno, strerror(errno)); } result: ul=4294967295,*p=0,errno=34(Result too large) ul=4294967295,*p=0,errno=34(Result too large) ul=4294967295,*p=0,errno=22(Unknown error: 0) >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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