--core-file doesn't work as intended

[Trond Norbye]

If you start drizzled with --core-file you would expect it to write a corefile if it crash, but this really doesn't happen. All it does is that it sets the RLIM_CORE to unlimited.

The problem is the test where it determines if it should trap the signals or not:

if (!(test_flags & TEST_NO_STACKTRACE) || (test_flags & TEST_CORE_ON_SIGNAL))

If you look closely to this test you will see that it will only evaluate to false if TEST_NO_STACKTRACE is set, and TEST_CORE_ON_SIGNAL is false.

The correct test would be:
if (!(test_flags & TEST_NO_STACKTRACE || test_flags & TEST_CORE_ON_SIGNAL))

This evaluated to false if TEST_NO_STACKTRACE or TEST_CORE_ON_SIGNAL is set.