8139c5a516
Reverted #1628 and changed the grammar+parser of the language to not allow certain expr where types are expected
34 lines
830 B
Zig
34 lines
830 B
Zig
const CountBy = struct {
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a: usize,
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const One = CountBy{ .a = 1 };
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pub fn counter(self: *const CountBy) Counter {
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return Counter{ .i = 0 };
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}
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};
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const Counter = struct {
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i: usize,
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pub fn count(self: *Counter) bool {
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self.i += 1;
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return self.i <= 10;
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}
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};
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fn constCount(comptime cb: *const CountBy, comptime unused: u32) void {
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comptime {
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var cnt = cb.counter();
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if (cnt.i != 0) @compileError("Counter instance reused!");
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while (cnt.count()) {}
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}
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}
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test "comptime struct return should not return the same instance" {
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//the first parameter must be passed by reference to trigger the bug
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//a second parameter is required to trigger the bug
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const ValA = constCount(&CountBy.One, 12);
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const ValB = constCount(&CountBy.One, 15);
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}
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