samplecode/wasmi/test_input/unwind.wast

;; Test that control-flow transfer unwinds stack and it can be anything after.

(module
  (func (export "func-unwind-by-unreachable")
    (i32.const 3) (i64.const 1) (unreachable)
  )
  (func (export "func-unwind-by-br")
    (i32.const 3) (i64.const 1) (br 0)
  )
  (func (export "func-unwind-by-br-value") (result i32)
    (i32.const 3) (i64.const 1) (br 0 (i32.const 9))
  )
  (func (export "func-unwind-by-br_table")
    (i32.const 3) (i64.const 1) (br_table 0 (i32.const 0))
  )
  (func (export "func-unwind-by-br_table-value") (result i32)
    (i32.const 3) (i64.const 1) (br_table 0 (i32.const 9) (i32.const 0))
  )
  (func (export "func-unwind-by-return") (result i32)
    (i32.const 3) (i64.const 1) (return (i32.const 9))
  )

  (func (export "block-unwind-by-unreachable")
    (block (i32.const 3) (i64.const 1) (unreachable))
  )
  (func (export "block-unwind-by-br") (result i32)
    (block (i32.const 3) (i64.const 1) (br 0)) (i32.const 9)
  )
  (func (export "block-unwind-by-br-value") (result i32)
    (block (result i32) (i32.const 3) (i64.const 1) (br 0 (i32.const 9)))
  )
  (func (export "block-unwind-by-br_table") (result i32)
    (block (i32.const 3) (i64.const 1) (br_table 0 (i32.const 0))) (i32.const 9)
  )
  (func (export "block-unwind-by-br_table-value") (result i32)
    (block (result i32)
      (i32.const 3) (i64.const 1) (br_table 0 (i32.const 9) (i32.const 0))
    )
  )
  (func (export "block-unwind-by-return") (result i32)
    (block (result i32) (i32.const 3) (i64.const 1) (return (i32.const 9)))
  )

  (func (export "block-nested-unwind-by-unreachable") (result i32)
    (block (result i32) (i32.const 3) (block (i64.const 1) (unreachable)))
  )
  (func (export "block-nested-unwind-by-br") (result i32)
    (block (i32.const 3) (block (i64.const 1) (br 1)) (drop)) (i32.const 9)
  )
  (func (export "block-nested-unwind-by-br-value") (result i32)
    (block (result i32)
      (i32.const 3) (block (i64.const 1) (br 1 (i32.const 9)))
    )
  )
  (func (export "block-nested-unwind-by-br_table") (result i32)
    (block
      (i32.const 3) (block (i64.const 1) (br_table 1 (i32.const 1)))
      (drop)
    )
    (i32.const 9)
  )
  (func (export "block-nested-unwind-by-br_table-value") (result i32)
    (block (result i32)
      (i32.const 3)
      (block (i64.const 1) (br_table 1 (i32.const 9) (i32.const 1)))
    )
  )
  (func (export "block-nested-unwind-by-return") (result i32)
    (block (result i32)
      (i32.const 3) (block (i64.const 1) (return (i32.const 9)))
    )
  )

  (func (export "unary-after-unreachable") (result i32)
    (f32.const 0) (unreachable) (i64.eqz)
  )
  (func (export "unary-after-br") (result i32)
    (block (result i32) (f32.const 0) (br 0 (i32.const 9)) (i64.eqz))
  )
  (func (export "unary-after-br_table") (result i32)
    (block (result i32)
      (f32.const 0) (br_table 0 0 (i32.const 9) (i32.const 0)) (i64.eqz)
    )
  )
  (func (export "unary-after-return") (result i32)
    (f32.const 0) (return (i32.const 9)) (i64.eqz)
  )

  (func (export "binary-after-unreachable") (result i32)
    (f32.const 0) (f64.const 1) (unreachable) (i64.eq)
  )
  (func (export "binary-after-br") (result i32)
    (block (result i32)
      (f32.const 0) (f64.const 1) (br 0 (i32.const 9)) (i64.eq)
    )
  )
  (func (export "binary-after-br_table") (result i32)
    (block (result i32)
      (f32.const 0) (f64.const 1) (br_table 0 (i32.const 9) (i32.const 0))
      (i64.eq)
    )
  )
  (func (export "binary-after-return") (result i32)
    (f32.const 0) (f64.const 1) (return (i32.const 9)) (i64.eq)
  )

  (func (export "select-after-unreachable") (result i32)
    (f32.const 0) (f64.const 1) (i64.const 0) (unreachable) (select)
  )
  (func (export "select-after-br") (result i32)
    (block (result i32)
      (f32.const 0) (f64.const 1) (i64.const 0) (br 0 (i32.const 9)) (select)
    )
  )
  (func (export "select-after-br_table") (result i32)
    (block (result i32)
      (f32.const 0) (f64.const 1) (i64.const 0)
      (br_table 0 (i32.const 9) (i32.const 0))
      (select)
    )
  )
  (func (export "select-after-return") (result i32)
    (f32.const 0) (f64.const 1) (i64.const 1) (return (i32.const 9)) (select)
  )

  (func (export "block-value-after-unreachable") (result i32)
    (block (result i32) (f32.const 0) (unreachable))
  )
  (func (export "block-value-after-br") (result i32)
    (block (result i32) (f32.const 0) (br 0 (i32.const 9)))
  )
  (func (export "block-value-after-br_table") (result i32)
    (block (result i32)
      (f32.const 0) (br_table 0 0 (i32.const 9) (i32.const 0))
    )
  )
  (func (export "block-value-after-return") (result i32)
    (block (result i32) (f32.const 0) (return (i32.const 9)))
  )

  (func (export "loop-value-after-unreachable") (result i32)
    (loop (result i32) (f32.const 0) (unreachable))
  )
  (func (export "loop-value-after-br") (result i32)
    (block (result i32) (loop (result i32) (f32.const 0) (br 1 (i32.const 9))))
  )
  (func (export "loop-value-after-br_table") (result i32)
    (block (result i32)
      (loop (result i32)
        (f32.const 0) (br_table 1 1 (i32.const 9) (i32.const 0))
      )
    )
  )
  (func (export "loop-value-after-return") (result i32)
    (loop (result i32) (f32.const 0) (return (i32.const 9)))
  )
)

(assert_trap (invoke "func-unwind-by-unreachable") "unreachable")
(assert_return (invoke "func-unwind-by-br"))
(assert_return (invoke "func-unwind-by-br-value") (i32.const 9))
(assert_return (invoke "func-unwind-by-br_table"))
(assert_return (invoke "func-unwind-by-br_table-value") (i32.const 9))
(assert_return (invoke "func-unwind-by-return") (i32.const 9))

(assert_trap (invoke "block-unwind-by-unreachable") "unreachable")
(assert_return (invoke "block-unwind-by-br") (i32.const 9))
(assert_return (invoke "block-unwind-by-br-value") (i32.const 9))
(assert_return (invoke "block-unwind-by-br_table") (i32.const 9))
(assert_return (invoke "block-unwind-by-br_table-value") (i32.const 9))
(assert_return (invoke "block-unwind-by-return") (i32.const 9))

(assert_trap (invoke "block-nested-unwind-by-unreachable") "unreachable")
(assert_return (invoke "block-nested-unwind-by-br") (i32.const 9))
(assert_return (invoke "block-nested-unwind-by-br-value") (i32.const 9))
(assert_return (invoke "block-nested-unwind-by-br_table") (i32.const 9))
(assert_return (invoke "block-nested-unwind-by-br_table-value") (i32.const 9))
(assert_return (invoke "block-nested-unwind-by-return") (i32.const 9))

(assert_trap (invoke "unary-after-unreachable") "unreachable")
(assert_return (invoke "unary-after-br") (i32.const 9))
(assert_return (invoke "unary-after-br_table") (i32.const 9))
(assert_return (invoke "unary-after-return") (i32.const 9))

(assert_trap (invoke "binary-after-unreachable") "unreachable")
(assert_return (invoke "binary-after-br") (i32.const 9))
(assert_return (invoke "binary-after-br_table") (i32.const 9))
(assert_return (invoke "binary-after-return") (i32.const 9))

(assert_trap (invoke "select-after-unreachable") "unreachable")
(assert_return (invoke "select-after-br") (i32.const 9))
(assert_return (invoke "select-after-br_table") (i32.const 9))
(assert_return (invoke "select-after-return") (i32.const 9))

(assert_trap (invoke "block-value-after-unreachable") "unreachable")
(assert_return (invoke "block-value-after-br") (i32.const 9))
(assert_return (invoke "block-value-after-br_table") (i32.const 9))
(assert_return (invoke "block-value-after-return") (i32.const 9))

(assert_trap (invoke "loop-value-after-unreachable") "unreachable")
(assert_return (invoke "loop-value-after-br") (i32.const 9))
(assert_return (invoke "loop-value-after-br_table") (i32.const 9))
(assert_return (invoke "loop-value-after-return") (i32.const 9))