I think jbj might have figured out the problem. Zypper is not using pcre, but is instead causing mire to use the system regex.
I made some local changes in an attempt to point the #include of regex.h in mire with a #error. I'm in the process of building both RPM and Zypper now to see if this causes a build failure -- if it does, we need to figure out a Zypper solution because it's bringing in mire.h. --Mark On 3/1/11 1:15 PM, pinto.e...@gmail.com wrote: > Hi, i have checked mire.c and there is none difference from 5.3 and 5.4. So > perhaps a autofu issue is possible, difficult that i can do a MandrivaUpdate > without a problem on cokker with a such apparently evident problem with > 5.3.6. Can you post your configure invocation, configure log. Regards > -----Original Message----- > From: Paul Eggleton > Sent: 01/03/2011, 17:04 > To: rpm-devel@rpm5.org > Subject: librpmio memory allocation issue > > > Hi there, > > In Poky we're currently seeing a crash of "zypper search" in conjunction with > rpm 5.4.0 [1]. Using valgrind I tracked the issue down to rpmio/mire.c line > 361: > > mire->preg = xcalloc(1, sizeof(*mire->preg)); > > If I hack this line to specify 64 as the size (the expected sizeof(regex_t) > for x86_64, as opposed to 24 reported by valgrind) then the crash disappears > and valgrind stops reporting invalid memory accesses. > > I don't have much knowledge of the rpm codebase, but a bit of header grepping > shows me that libpcre's pcreposix.h has a regex_t which differs quite > considerably from regex_t in regex.h (and matches the smaller size reported > by > valgrind), and therefore I strongly suspect that the culprit is that pcre's > regex_t is being used when allocating the struct in mire.c which is then > passed to regcomp. FWIW we are enabling pcre support at configure time. > > I could hack this to work, but since we may have dueling headers here the > solution might not be trivial. Any suggestions? > > Thanks, > Paul > > [1] http://bugzilla.pokylinux.org/show_bug.cgi?id=721 > ______________________________________________________________________ RPM Package Manager http://rpm5.org Developer Communication List rpm-devel@rpm5.org
