testsuite/data_drop0.wast at main · WebAssembly/testsuite · GitHub

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;; data.drop
(module
  (memory $mem0 0)
  (memory $mem1 1)
  (memory $mem2 0)
  (data $p "x")
  (data $a (memory 1) (i32.const 0) "x")

  (func (export "drop_passive") (data.drop $p))
  (func (export "init_passive") (param $len i32)
    (memory.init $mem1 $p (i32.const 0) (i32.const 0) (local.get $len)))

  (func (export "drop_active") (data.drop $a))
  (func (export "init_active") (param $len i32)
    (memory.init $mem1 $a (i32.const 0) (i32.const 0) (local.get $len)))
)

(invoke "init_passive" (i32.const 1))
(invoke "drop_passive")
(invoke "drop_passive")
(assert_return (invoke "init_passive" (i32.const 0)))
(assert_trap (invoke "init_passive" (i32.const 1)) "out of bounds memory access")
(invoke "init_passive" (i32.const 0))
(invoke "drop_active")
(assert_return (invoke "init_active" (i32.const 0)))
(assert_trap (invoke "init_active" (i32.const 1)) "out of bounds memory access")
(invoke "init_active" (i32.const 0))