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Do not allow partial segment initialization for tables and memories

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This commit is contained in:
Nick Fitzgerald
2020-02-26 13:10:52 -08:00
parent 235833ab97
commit 66634cc796
3 changed files with 100 additions and 36 deletions
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35
tests/misc_testsuite/bulk-memory-operations/partial-init-memory-segment.wast Normal file
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@@ -0,0 +1,35 @@
(module $m
(memory (export "mem") 1)
(func (export "load") (param i32) (result i32)
local.get 0
i32.load8_u))
(register "m" $m)
(assert_trap
(module
(memory (import "m" "mem") 1)
;; This is in bounds, and should get written to the memory.
(data (i32.const 0) "abc")
;; Partially out of bounds. None of these bytes should get written, and
;; instantiation should trap.
(data (i32.const 65530) "zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz")
)
"out of bounds"
)
;; The first data segment got written.
(assert_return (invoke $m "load" (i32.const 0)) (i32.const 97))
(assert_return (invoke $m "load" (i32.const 1)) (i32.const 98))
(assert_return (invoke $m "load" (i32.const 2)) (i32.const 99))
;; The second did not get partially written.
(assert_return (invoke $m "load" (i32.const 65530)) (i32.const 0))
(assert_return (invoke $m "load" (i32.const 65531)) (i32.const 0))
(assert_return (invoke $m "load" (i32.const 65532)) (i32.const 0))
(assert_return (invoke $m "load" (i32.const 65533)) (i32.const 0))
(assert_return (invoke $m "load" (i32.const 65534)) (i32.const 0))
(assert_return (invoke $m "load" (i32.const 65535)) (i32.const 0))