问题
What is the reasoning behind types to be redefined in GLib? Why do they turn char into gchar, int into gint, etc.?
回答1:
Check out Basic Types in the GLib documentation. Essentially, it's to guarantee that certain types will exist with certain semantics, regardless of which C compiler or platform you're using. The types that C guarantees anyway are typedefed just to make all of the type names look uniform.
来源：https://stackoverflow.com/questions/1819561/why-does-glib-redefine-types