Re: [Libguestfs] [PATCH libguestfs] tests: increase likelihood that heap abuse triggers failure

This takes advantage of glibc's MALLOC_PERTURB_. If you develop on glibc-based systems and don't yet set this via your shell's init scripts, add something like this to e.g., .bashrc: export MALLOC_PERTURB_=$(($RANDOM % 255 + 1)) This change ensures that it's enabled for anyone running "make check" and in particular for koji. There's probably documentation somewhere, but I don't know where off hand, so this will have to do: http://udrepper.livejournal.com/11429.html >From e7ee94be7e929d8aa94e3e360d1d1ca3711dd01e Mon Sep 17 00:00:00 2001 From: Jim Meyering <meyering(a)redhat.com&gt; Date: Thu, 13 Aug 2009 18:29:59 +0200 Subject: [PATCH libguestfs] tests: increase likelihood that heap abuse triggers failure * regressions/Makefile.am (TESTS_ENVIRONMENT): Always set MALLOC_PERTURB_ to a random value in 1..255. --- regressions/Makefile.am | 3 +++ 1 files changed, 3 insertions(+), 0 deletions(-) diff --git a/regressions/Makefile.am b/regressions/Makefile.am index a51c76b..3279f95 100644 --- a/regressions/Makefile.am +++ b/regressions/Makefile.am @@ -40,7 +40,10 @@ SKIPPED_TESTS = \ FAILING_TESTS = \ test-qemudie-launchfail.sh +random_val := $(shell awk 'BEGIN{srand(); print 1+int(255*rand())}' < /dev/null) + TESTS_ENVIRONMENT = \ + MALLOC_PERTURB_=$(random_val) \ LD_LIBRARY_PATH=$(top_builddir)/src/.libs \ LIBGUESTFS_PATH=$(top_builddir)/appliance \ NOEXEC_CHECK="$(top_builddir)/src/.libs/libguestfs.so $(top_builddir)/daemon/guestfsd" -- 1.6.4.357.gfd68c