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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - WebAssembly: exporting a property with a name that's a number doesn't work"
href="https://bugs.webkit.org/show_bug.cgi?id=168857">168857</a>
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<th>Summary</th>
<td>WebAssembly: exporting a property with a name that's a number doesn't work
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>Product</th>
<td>WebKit
</td>
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<th>Version</th>
<td>WebKit Nightly Build
</td>
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<th>Hardware</th>
<td>Unspecified
</td>
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<th>OS</th>
<td>Unspecified
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>Normal
</td>
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<th>Priority</th>
<td>P2
</td>
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<th>Component</th>
<td>JavaScriptCore
</td>
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>jfbastien@apple.com
</td>
</tr>
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<th>CC</th>
<td>jfbastien@apple.com, keith_miller@apple.com, mark.lam@apple.com, msaboff@apple.com, sbarati@apple.com, utatane.tea@gmail.com
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<th>Blocks</th>
<td>159775
</td>
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<p>
<div>
<pre>The following test in test_Instance.js fails but shouldn't:
(function ExportedNumber() {
for (let i = 0; i <= 129; ++i) {
const name = i.toString();
const builder = (new Builder())
.Type().End()
.Function().End()
.Export()
.Function(name)
.End()
.Code()
.Function(name, { params: [], ret: "i32" })
.I32Const(i)
.Return()
.End()
.End();
const bin = builder.WebAssembly().get();
const module = new WebAssembly.Module(bin);
const instance = new WebAssembly.Instance(module);
const result = instance.exports[name]();
assert.isA(result, "number");
assert.eq(result, i);
}
})();
If you prefix `name` with another string, everything works. I think the issue has to do with using AbstractModuleRecord, somewhere after:
symbolTablePutTouchWatchpointSet(moduleEnvironment, state, exp.field, exportedValue, shouldThrowReadOnlyError, ignoreReadOnlyErrors, putResult);
exp.field is being put in properly, but then the ModuleRecord mapping is sad at string such as "0".
I'm adding this test, commented out, and leaving a FIXME. The spec tests have a similar failure.</pre>
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