zig/test/cases/bugs/1381.zig
Andrew Kelley dd1338b0e6
fix incorrect union const value generation
closes #1381

The union was generated as a 3 byte struct when it needed to be
4 bytes so that the packed struct bitcast could work correctly.

Now it recognizes this situation and adds padding bytes to become
the correct size so that it can fit into an array.
2018-09-11 12:59:39 -04:00

22 lines
337 B
Zig

const std = @import("std");
const B = union(enum) {
D: u8,
E: u16,
};
const A = union(enum) {
B: B,
C: u8,
};
test "union that needs padding bytes inside an array" {
var as = []A{
A{ .B = B{ .D = 1 } },
A{ .B = B{ .D = 1 } },
};
const a = as[0].B;
std.debug.assertOrPanic(a.D == 1);
}