From: Brian Candler <b.candler@...>
Date: 2009-11-20T18:20:30+09:00
Subject: Re: Error: symbol string may not contain `\0'

Dylan Lukes wrote:
> Basically it's pretty self explanatory. I'm packing the following:
> 
> [0x00, 0x07, str1, str2, 0x00].pack(cA64A64c)

Please show the *exact* code you are running, and the *exact* error you 
are getting (use copy-paste for both), because what you have posted 
doesn't make any sense and I cannot replicate the particular error you 
claim to see.

>> [0x00, 0x07, str1, str2, 0x00].pack(cA64A64c)
NameError: undefined local variable or method `str1' for main:Object
  from (irb):1
>> str1 = "abc"; str2 = "def"
=> "def"
>> [0x00, 0x07, str1, str2, 0x00].pack(cA64A64c)
NameError: undefined local variable or method `cA64A64c' for main:Object
  from (irb):3
  from :0
>> [0x00, 0x07, str1, str2, 0x00].pack("cA64A64c")
TypeError: can't convert Fixnum into String
  from (irb):4:in `pack'
  from (irb):4
  from :0
>> [0x00, 0x07, str1, str2, 0x00].pack("ccA64A64c")
=> "\000\aabc 
def                                                             \000"
>> [0x00, 0x07, str1, str2, 0x00].pack("ccA64A64c")
=> "\000\aabc\000 
def                                                             \000"
>> 

After removing the obvious bugs from your code it looks fine to me, so 
if this doesn't do what you want, you'll have to explain what it is you 
are trying to do.
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