test/lit/exec/cont_through_js.wast

;; NOTE: Assertions have been generated by update_lit_checks.py --output=fuzz-exec and should not be edited.

;; RUN: foreach %s %t wasm-opt -all --fuzz-exec-before -q -o /dev/null 2>&1 | filecheck %s

;; $test will try to suspend through JS. That traps. If it threw a JS exception
;; instead, we would catch that exception and continue onwards, hitting an
;; invalid internal state.

(module
 (type $f (func))
 (type $k (cont $f))

 (import "fuzzing-support" "call-export" (func $call-export (param i32 i32)))
 (import "fuzzing-support" "call-export-catch" (func $call-export-catch (param i32) (result i32)))

 (tag $e)

 ;; CHECK:      [fuzz-exec] calling suspend
 ;; CHECK-NEXT: [exception thrown: unhandled suspend]
 (func $suspend (export "suspend")
  (suspend $e)
 )

 ;; CHECK:      [fuzz-exec] calling handle
 ;; CHECK-NEXT: [trap suspend through JS]
 (func $handle (export "handle")
  (drop
   (block $block (result (ref $k))
    (resume $k (on $e $block)
     (cont.new $k
      (ref.func $suspend-after-host-frame)
     )
    )
    (return)
   )
  )
 )

 (func $suspend-after-host-frame (type $f)
  (call $call-export
   (i32.const 0) ;; "suspend"
   (i32.const 0)
  )
 )

 ;; CHECK:      [fuzz-exec] calling test
 ;; CHECK-NEXT: [trap suspend through JS]
 (func $test (export "test")
  (drop
   (call $call-export-catch
    (i32.const 1) ;; "handle"
   )
  )
  (call $call-export
   (i32.const 0) ;; "suspend"
   (i32.const 1) ;; rethrow exceptions
  )
 )
)