Why is it possible to print an array but not an array of structs with gdb?

Question

I have written a python function for gdb to print an array to save me time,to type the same line everytime.

define print_array
    print *($arg0)@(sizeof($arg0)/ sizeof($arg0[0])
end

It works like expected, but when I try to print an array of structs, I get the following error :

>>> print_array opcode_list 
A syntax error in expression, near `'.
>>>

When I type it by hand, it works without errors.

>>> print *(opcode_list)@(sizeof(opcode_list)/sizeof(opcode_list[0]))
$2 = {[0] = {
    opcode_str = 0x401484 "halt", 
    output = 0
  }, [1] = {
    opcode_str = 0x401489 "pushc", 
    output = 1
  }, ...

Could someone explain me, what is my fault? And also give me maybe a hint/better solution for this?

jxh · Accepted Answer · 2016-10-25 17:54:24Z

2

You seem to be missing a ).

define print_array
    print *($arg0)@(sizeof($arg0)/ sizeof($arg0[0]))
end

answered Oct 25, 2016 at 17:54

jxh

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