zig

commit da2006a38c63ac84aa9a075193bd72cf2d1716a2 (tree)
parent 4f7344dec0bc61916f0c9af99bc5b5e5b7167da3
Author: Matthew Lugg <mlugg@mlugg.co.uk>
Date:   Sun,  8 Feb 2026 14:21:08 +0000

tests: unions without fields need not store their tag at runtime

...because the union semantically has no possible value so cannot be
stored to or loaded from memory anyway.

Diffstat:
M
test/behavior/union.zig
 | 
6
+-----

1 file changed, 1 insertion(+), 5 deletions(-)
diff --git a/test/behavior/union.zig b/test/behavior/union.zig
@@ -1020,7 +1020,7 @@ test "containers with single-field enums" {
     try comptime S.doTheTest();
 }
 
-test "@unionInit on union with tag but no fields" {
+test "@unionInit on union with u8 tag but no fields" {
     if (builtin.zig_backend == .stage2_arm) return error.SkipZigTest; // TODO
     if (builtin.zig_backend == .stage2_sparc64) return error.SkipZigTest; // TODO
 
@@ -1036,10 +1036,6 @@ test "@unionInit on union with tag but no fields" {
             }
         };
 
-        comptime {
-            assert(@sizeOf(Data) == 1);
-        }
-
         fn doTheTest() !void {
             var data: Data = .{ .no_op = {} };
             _ = &data;