(lldb) b PetscFunctionListAdd
Breakpoint 4: no locations (pending).
WARNING: Unable to resolve breakpoint to any actual locations.
(lldb) b PetscFunctionListAdd_Private
Breakpoint 5: where = libpetsc.dylib`PetscFunctionListAdd_Private + 23 at reg.c:173, address = 0x000000010a1d3697