1627987 - Emit RuntimeError for table out-of-bounds

Status: RESOLVED FIXED

(Core :: JavaScript: WebAssembly, defect)

Description

[Ryan Hunt [:rhunt]]

JSMSG_WASM_TABLE_OUT_OF_BOUNDS should emit a RuntimeError as the wasm spec specifies this as a trap. This was observed in the reference-types spec test suite.

Comment 1

[Ryan Hunt [:rhunt]]

Attachment: Bug 1627987 - Emit RuntimeError for table out-of-bounds. r?lth

We currently emit a RangeError for table out-of-bounds conditions. All table
instructions are specified to emit traps on out-of-bounds [1], which are
converted to RuntimeError by the JS API [2].

This was found in a newer version of the reference-types spec tests.

[1] https://webassembly.github.io/reference-types/core/exec/instructions.html
[2] https://webassembly.github.io/spec/js-api/index.html#exported-function-exotic-objects

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/40ff6069754d
Emit RuntimeError for table out-of-bounds. r=lth

Comment 3

[Daniel Varga [:dvarga]]

https://hg.mozilla.org/mozilla-central/rev/40ff6069754d