On Tue, Sep 17, 2019 at 12:05:26PM +0300, Toomas Soome wrote: > > > > On 17 Sep 2019, at 11:56, Konstantin Belousov <kostik...@gmail.com> wrote: > > > > On Mon, Sep 16, 2019 at 08:28:09PM +0000, Toomas Soome wrote: > >> Author: tsoome > >> Date: Mon Sep 16 20:28:08 2019 > >> New Revision: 352421 > >> URL: https://svnweb.freebsd.org/changeset/base/352421 > >> > >> Log: > >> loader: Malloc(0) should return NULL. > >> > >> We really should not allocate anything with size 0. > > Why ? This is quite unexpected from other environments, where > > malloc(0) returns unique object. > > > > Hiding bugs. And, we are not getting unique object, we are getting chunk of > memory with payload length of 0 and the memory content depends on if head and > tail guards are used - the chunk is with size at least MALLOCALIGN (16 or 64 > bytes) and the chunk is from random location of heap. >
Yes, exactly, this is how all other mallocs behave. _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
