Once past the build failures from bug 930350, running make check fails on multiple different tests, at least the following: TEST-INFO| running test | TestOpens ###!!! ABORT: Invalid protocol: file ./PTestOpensChild.cpp, line 271 ###!!! ABORT: Invalid protocol: file ./PTestOpensChild.cpp, line 271 WARNING: pipe error (17): Connection reset by peer: file /home/mh/mozilla-central/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 446 TEST-UNEXPECTED-FAIL | TestOpens | unexpected destruction! Segmentation fault TEST-UNEXPECTED-FAIL | TestShmem | can't alloc shmem ###!!! ABORT: failed test: file /home/mh/mozilla-central/ipc/ipdl/test/cxx/IPDLUnitTests.h, line 50 ###!!! ABORT: failed test: file /home/mh/mozilla-central/ipc/ipdl/test/cxx/IPDLUnitTests.h, line 50 Segmentation fault TEST-INFO| running test | TestUrgency IPDL protocol error: Handler for FinalTest_Begin returned error code ###!!! [Parent][DispatchSyncMessage] Error: Processing error: message was deserialized, but the handler returned false (indicating failure) TEST-PASS | TestUrgency | ok TEST-INFO| running test | TestUrgency TEST-UNEXPECTED-FAIL | TestUrgency | channel should have closed ###!!! ABORT: failed test: file /home/mh/mozilla-central/ipc/ipdl/test/cxx/IPDLUnitTests.h, line 50 ###!!! ABORT: failed test: file /home/mh/mozilla-central/ipc/ipdl/test/cxx/IPDLUnitTests.h, line 50 Segmentation fault There are also many error messages in tests that otherwise pass. I don't know if they are expected.