gcc4.1.2 and 4.3.2 has different default behavior

[Yixuan Huang]

Hello All,
I have encountered one issue when write a simple test code.
#inlcude <iostream>
int main{
  const char* str = "aaaa";
  std::cout<<"str len: "<<strlen(str)<<std::endl;
 return 0;
}

If I compile on gcc version 4.1.2 20070115 (SUSE Linux), it can be
compiled successfully. Otherwise, on gcc version 4.3.2 [gcc-4_3-branch
revision 141291] (SUSE Linux), it will show
linux-lht2:/home/yixuan # g++ aa.cpp
aa.cpp: In function ‘int main()’:
aa.cpp:6: error: ‘strlen’ was not declared in this scope

I don't know where can I get the information to explain the different behavior?

Thanks,
yixuan