DDD hangs and causes linux to stop responding

[Mark Waller]

Hi,

I have only just subscribed to this mail list because I have found and 
fixed a bug in DDD and I am looking for some guidance on proper procedure 
for reporting bugs and submitting fixes. I have described it here but if 
this is not the place then can someone please point me in the right direction.

I found a bug that causes DDD to hang when displaying the contents of a 
structure in C++ it also had the effect of causing Linux (not just the X 
server) to stop responding. It has been present in DDD for many years, I 
previously just avoided using the data display for fear of locking up my 
system and finally decided to investigate it myself (which I admit I should 
have done years ago).

Thanks,

Mark.

The cause was the fact the first field in the structure was called "object" 
and that caused the following code in value_read.C to look for an "end" 
token that didn't exist, which results in a flat spin.

The offending code is:

            if (gdb && gdb->program_language() != LANGUAGE_JAVA)
            {
                string name(value + start, pos - start);
                if (name == "record")
                    read_up_to(value, pos, "end");
                else if (name == "object")
                    read_up_to(value, pos, "end");
                else if (name == "RECORD")
                    read_up_to(value, pos, "END");
                else if (name == "OBJECT")
                    read_up_to(value, pos, "END");
            }


There is already a test here to exclude this token matching when debugging 
Java. I think this needs extending to include C and C++, and possibly 
others too, but I am not familiar with the debugging output  for other 
languages. i.e.


            if (gdb && gdb->program_language() != LANGUAGE_JAVA &&
                    gdb->program_language() != LANGUAGE_C)
            {
                ...