Sun Studio 12 Update 1: Debugging a Program With dbx

Call Safety

Making calls into the process you are debugging, either by using the call command or by printing expressions that contain calls, has the potential for causing severe non-obvious disruptions. Here are some scenarios to watch out for and how you can extricate yourself from them.

Some calls made by dbx are performed “safely.” If a problem, typically a segmentation fault, is encountered instead of the usual “Stopped with call to ...”, dbx:

dbx uses safe calls for: