[Swig-user] Binary byte in TCL gets pre-fixed by byte '0xC2', while accessing through C++ function via SWIG wrapper

[Jim C. <jim...@gm...>]

Hello,

I have a problem in converting a binary data into a character buffer
which is read by a C++ function using wrapper generated by SWIG.


I create a variable 'b' in TCL, and store in it a binary value as hex
string.
Then, I do "% set t [binary format H* $b]" to convert it into actual
binary.
Then, I pass it as argument to the SWIG wrapper for my C++ function,
which just accepts char* pointer and number of bytes, and prints
binary value of each separate bytes.


I can see that in my C++ function, I get 2 characters instead of 1.
My original byte is pre-fixed by a byte called 0xC2.


This happens when I pass a binary string also. Every binary byte is
pre-fixed by 0xC2.


Can some one tell me where is the problem, and how to solve it?


>From TCL, it looks fine to me.


Is it a problem with SWIG wrapper doing some internal conversion?

########### See the script below ############
% load example.dll


% MyClass myObj
_e04c0a01_p_MyClass
% set b b0
b0
% set t [binary format H* $b]
=B0
% myObj WRAP_TestFn $t 1
[3268] WRAP_TestFn pData: 0xc2


% myObj WRAP_TestFn $t 2
[3268] WRAP_TestFn pData: 0xc2 0xb0


%
########### End ############


########### C++ code ############