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-rw-r--r--test/behavior/struct.zig20
1 files changed, 20 insertions, 0 deletions
diff --git a/test/behavior/struct.zig b/test/behavior/struct.zig
index a6cfd0f987..b598dca026 100644
--- a/test/behavior/struct.zig
+++ b/test/behavior/struct.zig
@@ -1398,3 +1398,23 @@ test "under-aligned struct field" {
const result = std.mem.readIntNative(u64, array[4..12]);
try expect(result == 1234);
}
+
+test "address of zero-bit field is equal to address of only field" {
+ if (builtin.zig_backend == .stage2_x86_64) return error.SkipZigTest; // TODO
+ if (builtin.zig_backend == .stage2_aarch64) return error.SkipZigTest; // TODO
+ if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
+ if (builtin.zig_backend == .stage2_c) return error.SkipZigTest; // TODO
+
+ {
+ const A = struct { b: void = {}, u: u8 };
+ var a = A{ .u = 0 };
+ const a_ptr = @fieldParentPtr(A, "b", &a.b);
+ try std.testing.expectEqual(&a, a_ptr);
+ }
+ {
+ const A = struct { u: u8, b: void = {} };
+ var a = A{ .u = 0 };
+ const a_ptr = @fieldParentPtr(A, "b", &a.b);
+ try std.testing.expectEqual(&a, a_ptr);
+ }
+}