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elem_reftypes.wast
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elem_reftypes.wast
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;; Test the element section
;; Syntax
(module
(table $t 10 funcref)
(func $f)
(func $g)
;; Passive
(elem funcref)
(elem funcref (ref.func $f) (item ref.func $f) (item (ref.null func)) (ref.func $g))
(elem func)
(elem func $f $f $g $g)
(elem $p1 funcref)
(elem $p2 funcref (ref.func $f) (ref.func $f) (ref.null func) (ref.func $g))
(elem $p3 func)
(elem $p4 func $f $f $g $g)
;; Active
(elem (table $t) (i32.const 0) funcref)
(elem (table $t) (i32.const 0) funcref (ref.func $f) (ref.null func))
(elem (table $t) (i32.const 0) func)
(elem (table $t) (i32.const 0) func $f $g)
(elem (table $t) (offset (i32.const 0)) funcref)
(elem (table $t) (offset (i32.const 0)) func $f $g)
(elem (table 0) (i32.const 0) func)
;; (elem (table 0x0) (i32.const 0) func $f $f)
;; (elem (table 0x000) (offset (i32.const 0)) func)
(elem (table 0) (offset (i32.const 0)) func $f $f)
(elem (table $t) (i32.const 0) func)
(elem (table $t) (i32.const 0) func $f $f)
(elem (table $t) (offset (i32.const 0)) func)
(elem (table $t) (offset (i32.const 0)) func $f $f)
(elem (offset (i32.const 0)))
(elem (offset (i32.const 0)) funcref (ref.func $f) (ref.null func))
(elem (offset (i32.const 0)) func $f $f)
(elem (offset (i32.const 0)) $f $f)
(elem (i32.const 0))
(elem (i32.const 0) funcref (ref.func $f) (ref.null func))
(elem (i32.const 0) func $f $f)
(elem (i32.const 0) $f $f)
(elem $a1 (table $t) (i32.const 0) funcref)
(elem $a2 (table $t) (i32.const 0) funcref (ref.func $f) (ref.null func))
(elem $a3 (table $t) (i32.const 0) func)
(elem $a4 (table $t) (i32.const 0) func $f $g)
(elem $a9 (table $t) (offset (i32.const 0)) funcref)
(elem $a10 (table $t) (offset (i32.const 0)) func $f $g)
(elem $a11 (table 0) (i32.const 0) func)
;; (elem $a12 (table 0x0) (i32.const 0) func $f $f)
;; (elem $a13 (table 0x000) (offset (i32.const 0)) func)
(elem $a14 (table 0) (offset (i32.const 0)) func $f $f)
(elem $a15 (table $t) (i32.const 0) func)
(elem $a16 (table $t) (i32.const 0) func $f $f)
(elem $a17 (table $t) (offset (i32.const 0)) func)
(elem $a18 (table $t) (offset (i32.const 0)) func $f $f)
(elem $a19 (offset (i32.const 0)))
(elem $a20 (offset (i32.const 0)) funcref (ref.func $f) (ref.null func))
(elem $a21 (offset (i32.const 0)) func $f $f)
(elem $a22 (offset (i32.const 0)) $f $f)
(elem $a23 (i32.const 0))
(elem $a24 (i32.const 0) funcref (ref.func $f) (ref.null func))
(elem $a25 (i32.const 0) func $f $f)
(elem $a26 (i32.const 0) $f $f)
;; Declarative
(elem declare funcref)
(elem declare funcref (ref.func $f) (ref.func $f) (ref.null func) (ref.func $g))
(elem declare func)
(elem declare func $f $f $g $g)
(elem $d1 declare funcref)
(elem $d2 declare funcref (ref.func $f) (ref.func $f) (ref.null func) (ref.func $g))
(elem $d3 declare func)
(elem $d4 declare func $f $f $g $g)
)
(module
(func $f)
(func $g)
(table $t1 funcref (elem (ref.func $f) (ref.null func) (ref.func $g)))
(table $t2 (ref null func) (elem (ref.func $f) (ref.null func) (ref.func $g)))
)
;; Basic use
(module
(table 10 funcref)
(func $f)
(elem (i32.const 0) $f)
)
(module
(import "spectest" "table" (table 10 funcref))
(func $f)
(elem (i32.const 0) $f)
)
(module
(table 10 funcref)
(func $f)
(elem (i32.const 0) $f)
(elem (i32.const 3) $f)
(elem (i32.const 7) $f)
(elem (i32.const 5) $f)
(elem (i32.const 3) $f)
)
(module
(import "spectest" "table" (table 10 funcref))
(func $f)
(elem (i32.const 9) $f)
(elem (i32.const 3) $f)
(elem (i32.const 7) $f)
(elem (i32.const 3) $f)
(elem (i32.const 5) $f)
)
(module
(global (import "spectest" "global_i32") i32)
(table 1000 funcref)
(func $f)
(elem (global.get 0) $f)
)
(module
(global $g (import "spectest" "global_i32") i32)
(table 1000 funcref)
(func $f)
(elem (global.get $g) $f)
)
(module
(type $out-i32 (func (result i32)))
(table 10 funcref)
(elem (i32.const 7) $const-i32-a)
(elem (i32.const 9) $const-i32-b)
(func $const-i32-a (type $out-i32) (i32.const 65))
(func $const-i32-b (type $out-i32) (i32.const 66))
(func (export "call-7") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 7))
)
(func (export "call-9") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 9))
)
)
(assert_return (invoke "call-7") (i32.const 65))
(assert_return (invoke "call-9") (i32.const 66))
;; Corner cases
(module
(table 10 funcref)
(func $f)
(elem (i32.const 9) $f)
)
(module
(import "spectest" "table" (table 10 funcref))
(func $f)
(elem (i32.const 9) $f)
)
(module
(table 0 funcref)
(elem (i32.const 0))
)
(module
(import "spectest" "table" (table 0 funcref))
(elem (i32.const 0))
)
(module
(table 0 0 funcref)
(elem (i32.const 0))
)
(module
(table 20 funcref)
(elem (i32.const 20))
)
;;; We cannot enable these yet since we check table bounds at validation stage,
;;; which is incorrect for imported tables.
;; (module
;; (import "spectest" "table" (table 0 funcref))
;; (func $f)
;; (elem (i32.const 0) $f)
;; )
;; (module
;; (import "spectest" "table" (table 0 100 funcref))
;; (func $f)
;; (elem (i32.const 0) $f)
;; )
;; (module
;; (import "spectest" "table" (table 0 funcref))
;; (func $f)
;; (elem (i32.const 1) $f)
;; )
;; (module
;; (import "spectest" "table" (table 0 30 funcref))
;; (func $f)
;; (elem (i32.const 1) $f)
;; )
;; Two elements target the same slot
(module
(type $out-i32 (func (result i32)))
(table 10 funcref)
(elem (i32.const 9) $const-i32-a)
(elem (i32.const 9) $const-i32-b)
(func $const-i32-a (type $out-i32) (i32.const 65))
(func $const-i32-b (type $out-i32) (i32.const 66))
(func (export "call-overwritten") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 9))
)
)
(assert_return (invoke "call-overwritten") (i32.const 66))
(module
(type $out-i32 (func (result i32)))
(import "spectest" "table" (table 10 funcref))
(elem (i32.const 9) $const-i32-a)
(elem (i32.const 9) $const-i32-b)
(func $const-i32-a (type $out-i32) (i32.const 65))
(func $const-i32-b (type $out-i32) (i32.const 66))
(func (export "call-overwritten-element") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 9))
)
)
(assert_return (invoke "call-overwritten-element") (i32.const 66))
;; Element sections across multiple modules change the same table
(module $module1
(type $out-i32 (func (result i32)))
(table (export "shared-table") 10 funcref)
(elem (i32.const 8) $const-i32-a)
(elem (i32.const 9) $const-i32-b)
(func $const-i32-a (type $out-i32) (i32.const 65))
(func $const-i32-b (type $out-i32) (i32.const 66))
(func (export "call-7") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 7))
)
(func (export "call-8") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 8))
)
(func (export "call-9") (type $out-i32)
(call_indirect (type $out-i32) (i32.const 9))
)
)
(assert_invalid
(module
(type $none_=>_none (func))
(table 0 (ref null $none_=>_none))
(elem (i32.const 0) funcref)
)
)