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We need to tell fmtId() what encoding to assume, but this function doesn't know that. Fortunately we can fix that without changing the function's API, because we can just use SQL_ASCII. That's because database names in connection requests are effectively binary not text: no encoding-aware processing will happen on them. This fixes XversionUpgrade failures seen in the buildfarm. The alternative of having pg_upgrade use setFmtEncoding() is unappetizing, given that it's connecting to multiple databases that may have different encodings. Andres Freund, Noah Misch, Tom Lane Security: CVE-2025-1094 |
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