[Webkit-unassigned] [Bug 168857] New: WebAssembly: exporting a property with a name that's a number doesn't work
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Feb 24 16:51:58 PST 2017
https://bugs.webkit.org/show_bug.cgi?id=168857
Bug ID: 168857
Summary: WebAssembly: exporting a property with a name that's a
number doesn't work
Classification: Unclassified
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: JavaScriptCore
Assignee: webkit-unassigned at lists.webkit.org
Reporter: jfbastien at apple.com
CC: jfbastien at apple.com, keith_miller at apple.com,
mark.lam at apple.com, msaboff at apple.com,
sbarati at apple.com, utatane.tea at gmail.com
Blocks: 159775
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.
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