Mark LoaderFn return type as callconv(.c)

Author: hazeycode

README.md

@@ -34,7 +34,7 @@ pub fn main() !void {
     gl.clearBufferfv(gl.COLOR, 0, &[_]f32{ 0.2, 0.4, 0.8, 1.0 });
 }
 
-fn getProcAddress(name: [:0]const u8) ?*const anyopaque {
+fn getProcAddress(name: [:0]const u8) callconv(.c) ?*const anyopaque {
     // Load GL function pointer here
     // You could use `zsdl.gl.getProcAddress() or `zglfw.getProcAddress()`
 }

src/zopengl.zig

@@ -11,7 +11,7 @@ comptime {
 pub const bindings = @import("bindings.zig");
 pub const wrapper = @import("wrapper.zig").Wrap(bindings);
 
-pub const LoaderFn = *const fn ([*:0]const u8) ?*const anyopaque;
+pub const LoaderFn = *const fn ([*:0]const u8) callconv(.c) ?*const anyopaque;
 
 pub const Extension = enum {
     KHR_debug,