Source code
Revision control
Copy as Markdown
Other Tools
load(libdir + "wasm-binary.js");
const v2vSig = {args:[], ret:VoidCode};
const v2vSigSection = sigSection([v2vSig]);
function checkInvalid(binary, errorMessage) {
assertErrorMessage(() => new WebAssembly.Module(binary),
WebAssembly.CompileError,
errorMessage);
}
// The immediate of ref.null is a heap type, not a general reference type
const invalidRefNullHeapBody = moduleWithSections([
v2vSigSection,
declSection([0]),
bodySection([
funcBody({locals:[], body:[
RefNullCode,
OptRefCode,
FuncRefCode,
DropCode,
]})
])
]);
checkInvalid(invalidRefNullHeapBody, /invalid heap type/);
const invalidRefNullHeapElem = moduleWithSections([
generalElemSection([
{
flag: PassiveElemExpr,
typeCode: FuncRefCode,
elems: [
[RefNullCode, OptRefCode, FuncRefCode, EndCode]
]
}
])
]);
checkInvalid(invalidRefNullHeapElem, /invalid heap type/);
const invalidRefNullHeapGlobal = moduleWithSections([
globalSection([
{
valType: FuncRefCode,
flag: 0,
initExpr: [RefNullCode, OptRefCode, FuncRefCode, EndCode]
}
])
]);
checkInvalid(invalidRefNullHeapGlobal, /invalid heap type/);
// Test the encoding edge case where an init expression is provided for an
// imported table using the same byte pattern as the table section.
const invalidImportedTableInit = moduleWithSections([
importSection([
{
module: "", item: "",
// Hand-encode a table type with an init expression, which should
// only appear in the table section proper:
tableType: [
0x40, 0x00, ...tableType(FuncRefCode, limits({ min: 0 })),
RefFuncCode, ...varS32(123), EndCode,
],
},
]),
]);
checkInvalid(invalidImportedTableInit, /imported tables cannot have initializer expressions/);