debugging with GDB

Print value as hexa:

print/x variable

or

p/x variable

If you need more printing formats type: help x
basically:

s -> string
c -> char
t -> binary

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if you coded something like this:

char * stream;

then you allocate enough memory to store you text and try to print out the contents with p *stream you will get just the first character, I guess this is because gdb sees stream as a char(1 byte long). To get the whole string one should use:

p/s (char[3])*p1.question.qname

or

p/s *p1.question.qname@3

These lines will print the first 3 chars of the string