How to exclude printf messages from Catch reporter

Question

I am testing a library that monitors USB stick and allows listening to plugin/plugout events. The target system runs a custom Linux version and debugging is a pain on this system

So, for quick analysis of what is going, I very often use printf messages.

For unit testing of the library, I have started using Catch and I generate test reports using JUint reporter.

Problem: If I insert aprintf message for analysis, it gets added to the xml report generated by Catch.

My question: Is there a way to separate printf messages and the report generated by Catch?

Thanks.

UPDATE: I want to avoid writing to a file, because I've had problems with it when there are errors and the program crashes before the file is completely written to.

Answer 1

There is an another way.

You could print your debug messages to stderr instead of stdout using fprintf like this:

fprintf(stderr, "%d\n", c);

Since Catch's report is written to stdout you can then dismiss your output using redirection, e.g. on Linux systems:

./a.out -r junit 2> /dev/null