Date: Sat, 18 Sep 2004 00:47:15 +0300 (EEST) From: Frerich Raabe <frerich@athame.co.uk> To: FreeBSD-gnats-submit@FreeBSD.org Subject: ports/71832: Default Valgrind suppresion files for different FreeBSD releases Message-ID: <200409172147.i8HLlFHO098763@hex.athame.co.uk> Resent-Message-ID: <200409172150.i8HLoFCi050970@freefall.freebsd.org>
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>Number: 71832 >Category: ports >Synopsis: Default Valgrind suppresion files for different FreeBSD releases >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: change-request >Submitter-Id: current-users >Arrival-Date: Fri Sep 17 21:50:14 GMT 2004 >Closed-Date: >Last-Modified: >Originator: Frerich Raabe >Release: FreeBSD 5.1-RELEASE-p17 i386 >Organization: >Environment: System: FreeBSD hex.athame.co.uk 5.1-RELEASE-p17 FreeBSD 5.1-RELEASE-p17 #10: Sat Jul 17 09:04:39 EEST 2004 root@hex.athame.co.uk:/usr/obj/usr/src/sys/HEX i386 >Description: When building even a most simplistic C program on this box, valgrind spits out a handful of warnings which are not terribly useful since they originate from code in other system libraries. This is because some libraries shipped with FreeBSD have problematic code sequences themselves. >How-To-Repeat: % echo "int main(){}" > mini.c % cc -o mini mini.c % valgrind --tool=memcheck ./mini valgrind will now print a bunch of warnings, depending on what FreeBSD version (and thus, what libraries) is used. >Fix: It would be most excellent if a few default supression files could be shipped with the valgrind port, to make the software even more useful out of the box. What I did was simply running a command sequence as the one given in the "How-To-Repeat" section, but passing an additional "--gen-suppressions=yes" switch to valgrind. That way, it will (after asking for confirmation) generate a suitable supression rule for each error it finds. Those rules can then be stored in a file (e.g. "freebsd-5.2.1.supp"), and enabled by default by installing a "valgrindrc" file containing "--suppressions=/path/to/supressions/freebsd-5.2.1.supp". I'll try to generate suppresion files for different FreeBSD versions, and attach them to this report as I get them. >Release-Note: >Audit-Trail: >Unformatted:
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