Breakpoint in ROS_ASSERT

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Is it possible to set a debug breakpoint in ROS_ASSERT (gdb, Eclipse..) which only stops the program execution if the assertion fails so I can inspect the stack when the assertion fails?

It would work, if it would be like this:

if ( !( cond ) )
{
 ROS_ASSERT( cond );  // set breakpoint here
}

But without the surrounding if statement, the ROS_ASSERT is only in one line, and if I set a breakpoint there it will stop always, not only if the assertion fails.....

Any ideas on this? Thank you!