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2011-03-16valgrind: ignore SSE-based strlen invalid readsLibravatar Carlos Martín Nieto1-0/+6
Some versions of strlen use SSE to speed up the calculation and load 4 bytes at a time, even if it means reading past the end of the allocated memory. This read is safe and when the strlen function is inlined, it is not replaced by valgrind, which reports a false-possitive. Tell valgrind to ignore this particular error, as the read is, in fact, safe. Current upstream-released version 3.6.1 is affected. Some distributions have this fixed in their latest versions. Signed-off-by: Carlos Martín Nieto <cmn@elego.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-05valgrind: do not require valgrind 3.4.0 or newerLibravatar Johannes Schindelin2-2/+13
Valgrind 3.4.0 is pretty new, and even if --track-origins is a nice feature, it is not the end of the world if that is not available. So play nice and use that option only when only an older version of valgrind is available. In the same spirit, refrain from the use of '...' in suppression files, which is also a feature only valgrind 3.4 and newer understand. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-03Add a script to coalesce the valgrind outputsLibravatar Johannes Schindelin1-0/+123
After running the valgrind tests with GIT_TEST_TREE=t, the test output is in the test-results/$TEST.out files. Call ./valgrind/analyze.sh in $GIT_ROOT/t/ to group the valgrind errors by backtrace. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-03valgrind: ignore ldso and more libz errorsLibravatar Jeff King1-4/+26
On some Linux systems, we get a host of Cond and Addr errors from calls to dlopen that are caused by nss modules. We should be able to safely ignore anything happening in ld-*.so as "not our problem." [Johannes: I added some more... unfortunately using valgrind 3.4.0 syntax] Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2009-02-03Add valgrind support in test scriptsLibravatar Johannes Schindelin3-0/+36
This patch adds the ability to use valgrind's memcheck tool to diagnose memory problems in Git while running the test scripts. It requires valgrind 3.4.0 or newer. It works by creating symlinks to a valgrind script, which have the same name as our Git binaries, and then putting that directory in front of the test script's PATH as well as set GIT_EXEC_PATH to that directory. Git scripts are symlinked from that directory directly. That way, Git binaries called by Git scripts are valgrinded, too. Valgrind can be used by specifying "GIT_TEST_OPTS=--valgrind" in the make invocation. Any invocation of git that finds any errors under valgrind will exit with failure code 126. Any valgrind output will go to the usual stderr channel for tests (i.e., /dev/null, unless -v has been specified). If you need to pass options to valgrind -- you might want to run another tool than memcheck, for example -- you can set the environment variable GIT_VALGRIND_OPTIONS. A few default suppressions are included, since libz seems to trigger quite a few false positives. We'll assume that libz works and that we can ignore any errors which are reported there. Note: it is safe to run the valgrind tests in parallel, as the links in t/valgrind/bin/ are created using proper locking. Initial patch and all the hard work by Jeff King. Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de> Signed-off-by: Jeff King <peff@peff.net> Signed-off-by: Junio C Hamano <gitster@pobox.com>