;;; TOOL: run-interp
;;; ARGS*: --enable-exceptions --enable-tail-call
(module
  (tag $e1)
  (tag $e2)
  (type $helper-type (func (result i32)))
  (table funcref (elem $helper))
  (func (export "rethrow-br") (result i32)
    (try (result i32)
      (do
        (try
          (do (throw $e1))
          (catch $e1
            (try $l
              (do (throw $e2))
              (catch $e2
                ;; exception stack has two entries
                ;; br should reset to height of one
                (br $l)))
            ;; exception stack has one entry
            (rethrow 0)))
        (i32.const 0))
      (catch $e1
        (i32.const 1))))
  (func (export "rethrow-br-if") (result i32)
    (try (result i32)
      (do
        (try
          (do (throw $e1))
          (catch $e1
            (try $l
              (do (throw $e2))
              (catch $e2
                (i32.const 1)
                (br_if $l)))
            (rethrow 0)))
        (i32.const 0))
      (catch $e1
        (i32.const 1))))
  (func (export "rethrow-br-table") (result i32)
    (try (result i32)
      (do
        (try
          (do (throw $e1))
          (catch $e1
            (try $l
              (do (throw $e2))
              (catch $e2
                (i32.const 1)
                (br_table 1 $l 1)))
            (rethrow 0)))
        (i32.const 0))
      (catch $e1
        (i32.const 1))))
  (func $helper (result i32)
    (try (result i32)
      (do (throw $e1))
      (catch $e1
        (i32.const 1))))
  (func (export "rethrow-return-call") (result i32)
    (try (result i32)
      (do (throw $e1))
      (catch $e1
        (try $l
          (do (throw $e2))
          (catch $e2
            (return_call $helper)))
        (i32.const 0))))
  (func (export "rethrow-return-call-indirect") (result i32)
    (try (result i32)
      (do (throw $e1))
      (catch $e1
        (try $l
          (do (throw $e2))
          (catch $e2
            (i32.const 0)
            (return_call_indirect (type $helper-type))))
        (i32.const 0))))
  (func $helper-2
    (try
      (do (throw $e2))
      (catch $e2
        return)))
  (func (export "rethrow-return") (result i32)
    (try (result i32)
      (do
        (try (result i32)
          (do (throw $e1))
          (catch $e1
            (call $helper-2)
            (rethrow 0))))
      (catch $e1
        (i32.const 1))
      (catch $e2
        (i32.const 0))))
  ;; test rethrow stack interaction with throw, as if it were a br
  (func (export "rethrow-throw") (result i32)
    (try (result i32)
      (do
        (try
          (do (throw $e1))
          (catch $e1
            (try
              (do
                (try
                  (do (throw $e2))
                  (catch $e2
                    ;; exception stack has $e1, $e2
                    ;; should get unwound on throw to $e1
                    (throw $e2))))
              (catch $e2
                ;; should reference $e1
                (rethrow 1)))))
        (i32.const 0))
      (catch $e1 (i32.const 1))
      (catch_all (i32.const 0))))
  )
(;; STDOUT ;;;
rethrow-br() => i32:1
rethrow-br-if() => i32:1
rethrow-br-table() => i32:1
rethrow-return-call() => i32:1
rethrow-return-call-indirect() => i32:1
rethrow-return() => i32:1
rethrow-throw() => i32:1
;;; STDOUT ;;)