zig/test/cases/bugs/828.zig
Jimmi Holst Christensen 378d3e4403
Solve the return type ambiguity (#1628)
Changed container and initializer syntax
* <container> { ... } -> <container> . { ... }
* <exrp> { ... } -> <expr> . { ...}
2018-10-15 09:51:15 -04:00

34 lines
832 B
Zig

const CountBy = struct.{
a: usize,
const One = CountBy.{ .a = 1 };
pub fn counter(self: *const CountBy) Counter {
return Counter.{ .i = 0 };
}
};
const Counter = struct.{
i: usize,
pub fn count(self: *Counter) bool {
self.i += 1;
return self.i <= 10;
}
};
fn constCount(comptime cb: *const CountBy, comptime unused: u32) void {
comptime {
var cnt = cb.counter();
if (cnt.i != 0) @compileError("Counter instance reused!");
while (cnt.count()) {}
}
}
test "comptime struct return should not return the same instance" {
//the first parameter must be passed by reference to trigger the bug
//a second parameter is required to trigger the bug
const ValA = constCount(&CountBy.One, 12);
const ValB = constCount(&CountBy.One, 15);
}