How to pass an std::string to glShaderSource?

Question

I have the following code:

glShaderSource(shader, 1, (const char **)data.c_str(), NULL);

But it makes my program crash. How do I convert

Answer 1

data.c_str() returns a const char*, so do this:

const char *c_str = data.c_str();
glShaderSource(shader, 1, &c_str, NULL);