Boost.Test > Tutorials and usage recommendations > Command line

# Command line usage recommendations

- If you got fatal exception somewhere within test case, make program generate coredump by adding extra command line argument
- How to use test module build with Boost.Test framework under management of automated regression test facilities?

##### If you got fatal exception somewhere within test case, make program generate coredump by adding extra command line argument

If you got "memory access violation" message (or any other message indication fatal or system error) when you run you test, to get more information of error location add --catch_system_errors=no to the test run command line. Now run the test again and it will create a coredump you could analyze using you preferable debugger. Or run it under debugger in a first place and it will break at the point of failure.

##### How to use test module build with Boost.Test framework under management of automated regression test facilities?

My first recommendation is to make sure that the test framework catches all fatal errors using catch_system_error=yes. In other case test program may produce unwanted dialogs (depends on compiler and OS) that will halt you regression tests run. Second suppress any results reports using report_level=no and errors log using log_level=nothing, so it wont produce undesirable output no one is going to look at anyway. I recommend to rely only on result code that will be consistent for all test programs. An alternative to my second recommendation is direct both log and report to separate file you could analize later on. More over you could make Boost.Test to produce them in XML format using output_format=XML and use some automated tools that format this information as you like.