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Store indirect nulls in QPDF_Dictionary
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@ -122,7 +122,9 @@ void
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QPDF_Dictionary::replaceKey(std::string const& key, QPDFObjectHandle value)
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{
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if (value.isNull() && !value.isIndirect()) {
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// The PDF spec doesn't distinguish between keys with null values and missing keys.
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// The PDF spec doesn't distinguish between keys with null values and missing keys. Allow
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// indirect nulls which are equivalent to a dangling reference, which is permitted by the
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// spec.
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removeKey(key);
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} else {
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// add or replace value
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