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Commit692bd09

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Use "#ifdef CATALOG_VARLEN" to protect nullable fields of pg_authid.
This gives a stronger guarantee than a mere comment against accessing thesefields as simple struct members. Since rolpassword is in fact varlena,it's not clear why these didn't get marked from the beginning, but let'sdo it now.Michael Paquier
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‎src/include/catalog/pg_authid.h

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@@ -56,8 +56,10 @@ CATALOG(pg_authid,1260) BKI_SHARED_RELATION BKI_ROWTYPE_OID(2842) BKI_SCHEMA_MAC
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int32rolconnlimit;/* max connections allowed (-1=no limit) */
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/* remaining fields may be null; use heap_getattr to read them! */
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#ifdefCATALOG_VARLEN/* variable-length fields start here */
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textrolpassword;/* password, if any */
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timestamptzrolvaliduntil;/* password expiration time, if any */
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#endif
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}FormData_pg_authid;
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#undef timestamptz

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