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-rw-r--r--tests/misc/tsizeof.nim8
1 files changed, 8 insertions, 0 deletions
diff --git a/tests/misc/tsizeof.nim b/tests/misc/tsizeof.nim
index 0d96a5e04..ce5334664 100644
--- a/tests/misc/tsizeof.nim
+++ b/tests/misc/tsizeof.nim
@@ -732,3 +732,11 @@ type
 
 doAssert sizeof(PackedUnion) == 11
 doAssert alignof(PackedUnion) == 1
+
+# bug #22553
+type
+  ChunkObj = object
+    data: UncheckedArray[byte]
+
+doAssert sizeof(ChunkObj) == 1
+doAssert offsetOf(ChunkObj, data) == 1