Date: Wed, 23 Apr 2008 02:38:54 -0700 (PDT) From: Simun Mikecin <numisemis@yahoo.com> To: mwm-keyword-freebsdhackers2.e313df@mired.org Cc: hackers@freebsd.org Subject: Re: strdup(NULL) supposed to create SIGSEGV? Message-ID: <251738.1147.qm@web36602.mail.mud.yahoo.com>
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>Yes, it's supposed to segfault. Check out what, say, strcpy does if >you ask it to copy a NULL pointer. And this is an improvement from the >bad old days, when they would happily walk through memory starting at >0..... >Besides, errno is used to signal errors from system calls. strdup >isn't a system call, it's a library function (says so at the top of >the man page). >Do you have examples of systems where strdup doesn't behave this way? According to Open Group strdup should return NULL and set errno. Look at: http://www.opengroup.org/onlinepubs/009695399/functions/strdup.html There is no valid argument for doing segfault instead of above behavior. ____________________________________________________________________________________ Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ
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