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Defuse assert when flattening after already diagnosing an error #2233

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Merged
merged 1 commit into from
Mar 23, 2022
Merged

Defuse assert when flattening after already diagnosing an error #2233

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5 changes: 4 additions & 1 deletion src/module.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1452,7 +1452,10 @@ export class Module {
}
}
let singleType = getExpressionType(single);
assert(singleType == TypeRef.Unreachable || singleType == type);
if (singleType != TypeRef.Unreachable && singleType != type) {
// can happen when there was a diagnostic prior
return this.unreachable();
}
return single;
}
return this.block(null, stmts, type);
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