1const std = @import("std");
 2extern fn testFnPtr(n: c_int, ...) void;
 3
 4const val: c_int = 123;
 5
 6fn func(a: c_int) callconv(.c) void {
 7    std.debug.assert(a == val);
 8}
 9
10pub fn main() void {
11    testFnPtr(2, func, val);
12}