New Post: leak in GLSL shader...

Thank you for your quick answer. I started with const char* because this is what compileShader() is expecting. Following your advice, I replaced it by std::string. Here below is what I am doing now, so it can help someone else. No more memory leaks, feeling great!

bool Shader::loadShader(std::string shaderName, ShaderType shaderType, std::string vertexShaderFile, std::string fragmentShaderFile) {

GLuint vertexShaderID, fragmentShaderID;

m_shaderID = glCreateProgram();

m_shaderType = shaderType;

compileShader(vertexShaderID, GL_VERTEX_SHADER, readShader(vertexShaderFile).c_str());
compileShader(fragmentShaderID, GL_FRAGMENT_SHADER, readShader(fragmentShaderFile).c_str());

linkShader(m_shaderID, vertexShaderID, fragmentShaderID);

glDeleteShader(vertexShaderID);
glDeleteShader(fragmentShaderID);

glUseProgram(0);

return true;
}


std::string Shader::readShader(std::string shaderFile) {

std::ifstream shaderStream;
std::stringstream stringStream;

shaderStream.open(shaderFile);
stringStream << shaderStream.rdbuf();//read the file
shaderStream.close();

std::string shaderSource = stringStream.str();//str holds the content of the file
logFileStderr(VERBOSE, "Code shader program \"%s\"...\n", shaderSource.c_str());

return shaderSource;
}