Control characters handling on sun studio

Question

We have an application on 32 bit Solaris 8 compiled with g++ 3.3.4.
It deals with Messages with SOH(^A) character as a delimiter between different fields.
Same program when compiled with g++ 3.4.3 or Sun CC on 64 bit Solaris 10 machine in 32 bit mode (g++ -m32 xyz.cpp) does not recognize the control character
as the call to string.find fails. Whereas the above binary which was compiled on 32 bit machine executed on 64 bit box it still runs fine.
In original code we have defined static const char ch_SOH = '\001'.
any clue why this can happen or any change in compiler could trigger this?
Any inputs on this will be highly appreciated.

Answer 1

#include <iostream>
#include <string>
using namespace std;
int main()
const char ch = '\001';
const string ch2 = "^A";
string str("[SOCKET2.0^A0000000224^Al^AUXHK_AGY^");
size_t tsz = str.find(ch);
if (tsz != string::npos)
cout<<" Location with char find is : "<<tsz<<endl;
else cout <<" Not Recognized"<<endl;
tsz = str.find(ch2);
if (tsz != string::npos)
cout<<" Location is : "<<tsz<<endl;
if (ch=='^A')
cout<< " Old chars and new chars are same"<<endl;
else
cout<< " Old chars and new chars are not same"<<endl;
return 1;
}