Once upon a time, I could run Evolution and its helper processes in valgrind, as long as I set G_SLICE=always-malloc, and any report of memory being 'definitely lost' was fairly certain to be true. I don't remember any false positives. I last did this in late 2010; see https://bugzilla.gnome.org/showdependencytree.cgi?id=627707&hide_resolved=0 I had another go yesterday, and filed a few 'definitely lost' reports in GNOME bugzilla after doing very basic triage on them. And some of them look very much like they were false positives. There are some examples of basic structures like GString being used, which are clearly freed a few lines after they are created. Unless GLib has developed some egregious brokenness in its core data structures, valgrind seems to have got broken. These appear to be false positives: https://bugzilla.gnome.org/show_bug.cgi?id=702030 https://bugzilla.gnome.org/show_bug.cgi?id=702025 Valgrind also fails to track thread-local storage: https://bugzilla.gnome.org/show_bug.cgi?id=702021 and probably also https://bugzilla.gnome.org/show_bug.cgi?id=702023 It would be really useful to get back to the point where valgrind can sanely be used to track memory leaks in programs like Evolution again. It's bad enough that there's an unmanageable number of 'possibly lost' reports which are mostly false positives; for 'definitely lost' to start being untrustworthy too is really a PITA. Deliberately filing this in distro bugzilla so it can be assigned to other components if appropriate. I think we have "real" maintainers here for all relevant parts.
> These appear to be false positives: If you could provide the exact fedora package versions involved and the steps you did you trigger the leak that would help to reproduce the issues. > Valgrind also fails to track thread-local storage If you could provide a minimal example just using the pthread constructs without glibs own memory handling intertwined that would be really helpful.
valgrind-3.8.1-15.fc19.x86_64 glib2-2.36.2-1.fc19.x86_64 evolution-data-server-3.8.2-1.fc19.x86_64 There is an unanswered question from 2005 about valgrind's handling of pthread_key_create(): http://valgrind.10908.n7.nabble.com/pthread-key-create-question-td33955.html
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