diff options
Diffstat (limited to 'test')
| -rw-r--r-- | test/lit/passes/unsubtyping.wast | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/test/lit/passes/unsubtyping.wast b/test/lit/passes/unsubtyping.wast index 0d4e11e12..aa4af720b 100644 --- a/test/lit/passes/unsubtyping.wast +++ b/test/lit/passes/unsubtyping.wast @@ -1747,3 +1747,35 @@ ;; CHECK: (global $g (ref $super) (struct.new_default $sub)) (global $g (ref $super) (struct.new_default $sub)) ) + +;; Regression test for a bug where we considered $super to be a public type +;; (because it was once in contention to appear in js-string-builtin +;; signatures), so we only updated $sub, but that caused $sub and $super to be +;; the same type, changing the behavior of the cast. +(module + ;; CHECK: (type $super (sub (array (mut i8)))) + (type $super (sub (array (mut i8)))) + (type $sub (sub $super (array (mut i8)))) + ;; CHECK: (type $1 (func)) + + ;; CHECK: (export "test" (func $0)) + + ;; CHECK: (func $0 (type $1) + ;; CHECK-NEXT: (drop + ;; CHECK-NEXT: (ref.cast (ref none) + ;; CHECK-NEXT: (array.new_default $super + ;; CHECK-NEXT: (i32.const 0) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + ;; CHECK-NEXT: ) + (func $0 (export "test") + (drop + (ref.cast (ref $sub) + (array.new_default $super + (i32.const 0) + ) + ) + ) + ) +) |