with more than 20 domains, I get this: $ valgrind --leak-check=full ./virsh --connect test://$PWD/../docs/testnode.xml list ... error: failed to connect to the hypervisor ... ==13756== 5 bytes in 1 blocks are definitely lost in loss record 1 of 32 ==13756== at 0x4A059F6: malloc (vg_replace_malloc.c:149) ==13756== by 0x387BC7CC11: strdup (strdup.c:43) ==13756== by 0x41D9F2: virXPathString (xml.c:486) ==13756== by 0x4174D3: testLoadDomain (test.c:248) ==13756== by 0x417BA4: testLoadDomainFromFile (test.c:401) ==13756== by 0x418E57: testOpenFromFile (test.c:797) ==13756== by 0x4192CE: testOpen (test.c:913) ==13756== by 0x40FA20: do_open (libvirt.c:572) ==13756== by 0x40FDE4: virConnectOpenAuth (libvirt.c:681) ==13756== by 0x40D5B1: vshInit (virsh.c:4464) ==13756== by 0x40E67C: main (virsh.c:4985) ==13756== ==13756== ==13756== 12,996 (352 direct, 12,644 indirect) bytes in 1 blocks are definitely lost in loss record 31 of 32 ==13756== at 0x4A059F6: malloc (vg_replace_malloc.c:149) ==13756== by 0x38864880E6: xmlXPathNewContext (in /usr/lib64/libxml2.so.2.6.31) ==13756== by 0x417494: testLoadDomain (test.c:242) ==13756== by 0x417BA4: testLoadDomainFromFile (test.c:401) ==13756== by 0x418E57: testOpenFromFile (test.c:797) ==13756== by 0x4192CE: testOpen (test.c:913) ==13756== by 0x40FA20: do_open (libvirt.c:572) ==13756== by 0x40FDE4: virConnectOpenAuth (libvirt.c:681) ==13756== by 0x40D5B1: vshInit (virsh.c:4464) ==13756== by 0x40E67C: main (virsh.c:4985) ==13756== ==13756== LEAK SUMMARY: ==13756== definitely lost: 357 bytes in 2 blocks. ==13756== indirectly lost: 12,644 bytes in 32 blocks. ==13756== possibly lost: 0 bytes in 0 blocks. ==13756== still reachable: 20,614 bytes in 362 blocks. ==13756== suppressed: 0 bytes in 0 blocks. ==13756== Reachable blocks (those to which a pointer was found) are not shown. ==13756== To see them, rerun with: --leak-check=full --show-reachable Here's the fix: * test.c (testLoadDomain): Avoid leaks upon failure. --- src/test.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/src/test.c b/src/test.c index fe5da41..ab83f65 100644 --- a/src/test.c +++ b/src/test.c @@ -327,7 +327,7 @@ static int testLoadDomain(virConnectPtr conn, } } if (handle < 0) - return (-1); + goto error; privconn->domains[handle].active = 1; privconn->domains[handle].id = domid; -- 1.5.4.rc5.1.g0fa73