/* gcc `pkg-config --cflags --libs gio-2.0` test.c -o test */
#include <gio/gio.h>
int main (int argc, char *argv[]) {
    g_type_init ();
    char *text = "Text é";
    GFile *file = g_file_new_for_path ("./test.txt");
    g_file_replace_contents (file, text, -1, NULL, FALSE, 0, NULL, NULL, NULL);
    //g_file_set_contents ("test.txt", text, -1, NULL); // Works fine
    return 0;
}