Hi, Julien Claassen wrote: To be 100% correct you have to make a copy first! char *title = strdup("my title"); newCDKSelection([parameters],title,[more parameters]); .... free(title); should do the trick. If you can guarantee that newCDKSelection() never ever changes the contents of the string you could just cast way the const: const char *title = "my title"; newCDKSelection([parameters],const_cast<char *>(title),[more parameters]); gcc is not the problem here. Your code is wrong. So it is in fact not a warning but a fundamental problem :-) See below... String literals ("my title") in C++ are by definition const char * pointers. Why? Because they are subject to string pooling for example. const char *foo = "Hello world!"; const char *bar = "Hello world!"; Depending on the optimization of the compiler foo and bar might point to the same location. strcpy((char *)foo, "Bad idea"); ... is a bad idea because it will change foo and bar. Depending on the compiler you might also crash because the strings could be in a read only section. Because it should be the other way round: strcpy(title, "my title"); Please note that you have to allocate memory for title first. strdup() is the function you're really looking for. Until next version of gcc maybe? :-) Probably you should just fix the bugs ;-) Are you sure you need to compile your code using g++? If you don't use any c++ then just use gcc and the problem will magically go away because strings in C are plain char * pointers. Best, Florian